1650 lines
56 KiB
Go
1650 lines
56 KiB
Go
package inbound
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import (
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"bytes"
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"context"
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"crypto/md5"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log"
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"net"
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"net/http"
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"os"
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"strconv"
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"strings"
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"sync"
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"time"
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cmpp "github.com/bigwhite/gocmpp"
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cmpputils "github.com/bigwhite/gocmpp/utils"
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)
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const defaultHTTPTimeout = 10 * time.Second
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const defaultDownstreamAckTimeout = 30 * time.Second
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type Server struct {
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Addr string
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APIBaseURL string
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HTTPClient *http.Client
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LogWriter io.Writer
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PendingFlushInterval time.Duration
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PresenceStore PresenceStore
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RecoveryStore RecoveryStore
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GatewayInstanceID string
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}
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type authRequest struct {
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Account string `json:"account"`
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AuthSource string `json:"authSource"`
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Timestamp uint32 `json:"timestamp"`
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RemoteIP string `json:"remoteIp,omitempty"`
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}
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type submitRequest struct {
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Account string `json:"account"`
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PhoneNumber string `json:"phoneNumber,omitempty"`
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PhoneNumbers []string `json:"phoneNumbers,omitempty"`
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Content string `json:"content"`
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SrcID string `json:"srcId,omitempty"`
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DestID string `json:"destId,omitempty"`
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SequenceID uint32 `json:"sequenceId,omitempty"`
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RemoteIP string `json:"remoteIp,omitempty"`
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LongMessage *inboundLongMessageFragment `json:"longMessage,omitempty"`
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}
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type inboundLongMessageFragment struct {
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Reference int `json:"reference"`
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Total int `json:"total"`
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Index int `json:"index"`
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Format int `json:"format"`
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}
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type submitResponseMessage struct {
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PhoneNumber string `json:"phoneNumber"`
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MessageID string `json:"messageId"`
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}
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type submitResponse struct {
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Accepted bool `json:"accepted"`
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Result uint32 `json:"result,omitempty"`
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TenantID string `json:"tenantId,omitempty"`
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ApplicationID string `json:"applicationId,omitempty"`
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MessageID string `json:"messageId"`
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Messages []submitResponseMessage `json:"messages,omitempty"`
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}
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type protocolLogEvent struct {
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Protocol string `json:"protocol"`
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Direction string `json:"direction"`
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EventType string `json:"eventType"`
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Status string `json:"status"`
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TenantID string `json:"tenantId,omitempty"`
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ApplicationID string `json:"applicationId,omitempty"`
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Account string `json:"account,omitempty"`
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MessageID string `json:"messageId,omitempty"`
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GatewayMessageID string `json:"gatewayMessageId,omitempty"`
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Phone string `json:"phone,omitempty"`
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ResultCode string `json:"resultCode,omitempty"`
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Detail map[string]any `json:"detail,omitempty"`
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}
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type authResponse struct {
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PasswordCipher string `json:"passwordCipher"`
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ApplicationID string `json:"applicationId"`
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TenantID string `json:"tenantId"`
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Account string `json:"account"`
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EnterpriseCode string `json:"enterpriseCode"`
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MaxConnections int `json:"maxConnections"`
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}
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type DownstreamReceipt struct {
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DeliveryID string `json:"deliveryId,omitempty"`
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Account string `json:"account,omitempty"`
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ApplicationID string `json:"applicationId,omitempty"`
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MessageID string `json:"messageId"`
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GatewayMessageID string `json:"gatewayMessageId,omitempty"`
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PhoneNumber string `json:"phoneNumber,omitempty"`
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ReceiptStatus string `json:"receiptStatus"`
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RawStatus string `json:"rawStatus,omitempty"`
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ErrorCode string `json:"errorCode,omitempty"`
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SubmitSequenceID uint32 `json:"submitSequenceId,omitempty"`
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SubmitGroupMessageID string `json:"submitGroupMessageId,omitempty"`
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DeliveredAt string `json:"deliveredAt,omitempty"`
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}
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type DownstreamUplink struct {
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DeliveryID string `json:"deliveryId,omitempty"`
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Account string `json:"account,omitempty"`
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ApplicationID string `json:"applicationId,omitempty"`
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MessageID string `json:"messageId,omitempty"`
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PhoneNumber string `json:"phoneNumber"`
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DestID string `json:"destId"`
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Content string `json:"content"`
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ReceivedAt string `json:"receivedAt,omitempty"`
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}
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type DownstreamSendResult struct {
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Sent bool `json:"sent"`
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Retryable bool `json:"retryable"`
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ReasonCode string `json:"reasonCode,omitempty"`
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ErrorMessage string `json:"errorMessage,omitempty"`
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ConnectionID string `json:"connectionId,omitempty"`
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SequenceID string `json:"sequenceId,omitempty"`
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MessageID string `json:"messageId,omitempty"`
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SentAt string `json:"sentAt,omitempty"`
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AckDeadlineAt string `json:"ackDeadlineAt,omitempty"`
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}
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type downstreamDeliveryLifecycleEvent struct {
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Kind string
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DeliveryID string
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ConnectionID string
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SequenceID uint32
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MessageID uint64
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Result uint32
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ObservedAt time.Time
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AckDeadlineAt time.Time
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FailureType string
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ErrorMessage string
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}
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type downstreamAckTracker struct {
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deliveryID string
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connectionID string
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sequenceID uint32
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messageID uint64
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session *downstreamSession
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timer *time.Timer
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}
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type downstreamConnectionEvent struct {
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Account string `json:"account"`
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ConnectionID string `json:"connectionId"`
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Status string `json:"status"`
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RemoteIP string `json:"remoteIp,omitempty"`
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Protocol string `json:"protocol,omitempty"`
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ConnectedAt string `json:"connectedAt,omitempty"`
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ObservedAt string `json:"observedAt,omitempty"`
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ErrorMessage string `json:"errorMessage,omitempty"`
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}
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type downstreamSession struct {
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messageID string
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account string
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tenantID string
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applicationID string
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enterpriseCode string
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protocol string
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srcID string
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phoneNumber string
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gatewayMsgID uint64
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remoteIP string
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connectedAt time.Time
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connectionID string
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conn *cmpp.Conn
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mu *sync.Mutex
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presence PresenceStore
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instanceID string
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report func(*downstreamSession, string, string)
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deliveryReport func(downstreamDeliveryLifecycleEvent)
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protocolLog func(protocolLogEvent)
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}
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var downstreamRegistry = struct {
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sync.RWMutex
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byMessageID map[string]*downstreamSession
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byAccount map[string]*downstreamSession
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byConn map[*cmpp.Conn]*downstreamSession
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}{
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byMessageID: make(map[string]*downstreamSession),
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byAccount: make(map[string]*downstreamSession),
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byConn: make(map[*cmpp.Conn]*downstreamSession),
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}
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var downstreamAckRegistry = struct {
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sync.Mutex
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items map[string]*downstreamAckTracker
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}{items: make(map[string]*downstreamAckTracker)}
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var downstreamSubmitBarrier = struct {
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sync.RWMutex
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byConn map[*cmpp.Conn]int
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}{byConn: make(map[*cmpp.Conn]int)}
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func (s Server) ListenAndServe() error {
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addr := s.Addr
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if addr == "" {
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addr = ":17890"
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}
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s.logRecoveryCandidates(log.Default())
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go s.recoverPendingCandidates(log.Default())
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go s.runPendingFlusher(log.Default())
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return cmpp.ListenAndServeWithClose(addr, cmpp.V30, 30*time.Second, 3, s.LogWriter, s.handleConnectionClosed,
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cmpp.HandlerFunc(s.handleLogin),
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cmpp.HandlerFunc(s.handleSubmit),
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cmpp.HandlerFunc(s.handleActivity),
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)
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}
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func (s Server) handleLogin(response *cmpp.Response, packet *cmpp.Packet, logger *log.Logger) (bool, error) {
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req, ok := packet.Packer.(*cmpp.CmppConnReqPkt)
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if !ok {
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return true, nil
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}
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account := strings.TrimRight(req.SrcAddr, "\x00")
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if account == "" {
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setInboundConnectResponse(response.Packer, cmpp.ErrnoConnInvalidSrcAddr, req.AuthSrc, "", req.Version)
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return false, cmpp.ConnRspStatusErrMap[cmpp.ErrnoConnInvalidSrcAddr]
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}
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if req.Version != cmpp.V20 && req.Version != cmpp.V21 && req.Version != cmpp.V30 {
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setInboundConnectResponse(response.Packer, cmpp.ErrnoConnVerTooHigh, req.AuthSrc, "", cmpp.V30)
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return false, cmpp.ConnRspStatusErrMap[cmpp.ErrnoConnVerTooHigh]
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}
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auth, err := s.authenticate(packet.Conn.Conn.RemoteAddr(), account, req.AuthSrc, req.Timestamp)
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if err != nil {
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logger.Printf("cmpp inbound auth failed account=%s remote=%s err=%v", account, packet.Conn.Conn.RemoteAddr(), err)
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setInboundConnectResponse(response.Packer, cmpp.ErrnoConnAuthFailed, req.AuthSrc, "", req.Version)
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return false, cmpp.ConnRspStatusErrMap[cmpp.ErrnoConnAuthFailed]
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}
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now := time.Now().UTC()
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session := &downstreamSession{
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account: strings.TrimSpace(defaultString(auth.Account, account)),
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tenantID: strings.TrimSpace(auth.TenantID),
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applicationID: strings.TrimSpace(auth.ApplicationID),
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enterpriseCode: strings.TrimSpace(auth.EnterpriseCode),
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protocol: cmppVersionName(req.Version),
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srcID: strings.TrimSpace(auth.Account),
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remoteIP: remoteIP(packet.Conn.Conn.RemoteAddr()),
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connectedAt: now,
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connectionID: fmt.Sprintf("%s-%d", s.gatewayInstanceID(), now.UnixNano()),
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conn: packet.Conn,
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mu: &sync.Mutex{},
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presence: s.PresenceStore,
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instanceID: s.gatewayInstanceID(),
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report: s.reportConnection,
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deliveryReport: s.reportDownstreamDelivery,
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protocolLog: s.emitProtocolLog,
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}
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if !rememberAccount(session, auth.MaxConnections) {
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logger.Printf("cmpp inbound auth failed account=%s remote=%s err=connection limit exceeded max=%d", account, packet.Conn.Conn.RemoteAddr(), auth.MaxConnections)
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setInboundConnectResponse(response.Packer, cmpp.ErrnoConnOthers, req.AuthSrc, "", req.Version)
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return false, cmpp.ConnRspStatusErrMap[cmpp.ErrnoConnOthers]
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}
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setInboundConnectResponse(response.Packer, 0, req.AuthSrc, auth.PasswordCipher, req.Version)
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go s.reportConnectionOrDisconnect(session, "connected", "")
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response.AfterSend = func(sendErr error) {
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if sendErr == nil {
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go s.flushPending(defaultString(auth.Account, account), logger)
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}
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}
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logger.Printf(
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"cmpp inbound event=login_accepted protocol=%s requested_version=0x%02x response_version=0x%02x account=%s remote=%s",
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cmppVersionName(req.Version), uint8(req.Version), uint8(req.Version), account, packet.Conn.Conn.RemoteAddr(),
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)
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return false, nil
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}
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func (s Server) handleSubmit(response *cmpp.Response, packet *cmpp.Packet, logger *log.Logger) (bool, error) {
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req, ok := normalizeInboundSubmit(packet.Packer)
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if !ok {
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return true, nil
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}
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session := findSessionByConn(packet.Conn)
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if session == nil || strings.TrimSpace(session.account) == "" {
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logger.Printf(
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"cmpp inbound event=submit_rejected protocol=%s packet_type=%s remote=%s seq=%d result=9 stage=session reason=%q",
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req.protocol, req.protocol, packet.Conn.Conn.RemoteAddr(), req.sequenceID, "authenticated connection session not found",
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)
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setInboundSubmitResponse(response.Packer, 0, 9)
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response.AfterSend = s.submitResponseProtocolLogger("", req.protocol, req.sequenceID, "", "", 0, 9)
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return false, nil
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}
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account := session.account
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enterpriseCode := strings.TrimRight(req.msgSrc, "\x00")
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if session.enterpriseCode != "" && enterpriseCode != session.enterpriseCode {
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logger.Printf(
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"cmpp inbound event=submit_rejected protocol=%s packet_type=%s account=%s enterprise_code=%s remote=%s seq=%d result=9 stage=protocol reason=%q",
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defaultString(session.protocol, req.protocol), req.protocol, account, enterpriseCode, packet.Conn.Conn.RemoteAddr(), req.sequenceID,
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fmt.Sprintf("enterprise code mismatch: expected %s", session.enterpriseCode),
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)
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setInboundSubmitResponse(response.Packer, 0, 9)
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response.AfterSend = s.submitResponseProtocolLogger(account, defaultString(session.protocol, req.protocol), req.sequenceID, "", "", 0, 9)
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return false, nil
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}
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phones := make([]string, len(req.destTerminalIDs))
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for index, destination := range req.destTerminalIDs {
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phones[index] = strings.TrimSpace(strings.TrimRight(destination, "\x00"))
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}
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phone := ""
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if len(phones) > 0 {
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phone = phones[0]
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}
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remote := packet.Conn.Conn.RemoteAddr()
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clientProtocol := defaultString(session.protocol, req.protocol)
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logger.Printf(
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"cmpp inbound event=submit_received protocol=%s packet_type=%s account=%s enterprise_code=%s remote=%s seq=%d phone=%s src_id=%s msg_fmt=%d pk=%d/%d dest_count=%d content_bytes=%d",
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clientProtocol, req.protocol, account, enterpriseCode, remote, req.sequenceID, phone, strings.TrimSpace(req.srcID), req.msgFmt,
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req.pkNumber, req.pkTotal, len(req.destTerminalIDs), len(req.msgContent),
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)
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content, longMessage, err := decodeInboundSubmitContent(req)
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if err != nil {
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logger.Printf(
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"cmpp inbound event=submit_rejected protocol=%s packet_type=%s account=%s remote=%s seq=%d phone=%s result=9 stage=decode reason=%q",
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clientProtocol, req.protocol, account, remote, req.sequenceID, phone, err,
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)
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setInboundSubmitResponse(response.Packer, 0, 9)
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response.AfterSend = s.submitResponseProtocolLogger(account, clientProtocol, req.sequenceID, phone, "", 0, 9)
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return false, nil
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}
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contentHash := fmt.Sprintf("%x", md5.Sum([]byte(content)))
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startedAt := time.Now()
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releaseSubmitBarrier := beginDownstreamSubmitBarrier(packet.Conn)
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result, err := s.submit(remote, submitRequest{
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Account: account,
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PhoneNumber: phone,
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PhoneNumbers: phones,
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Content: content,
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SrcID: req.srcID,
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DestID: phone,
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SequenceID: req.sequenceID,
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RemoteIP: remoteIP(remote),
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LongMessage: longMessage,
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})
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if err != nil || !result.Accepted {
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reason := "api returned accepted=false"
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if err != nil {
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reason = err.Error()
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}
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responseResult := result.Result
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if responseResult == 0 {
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responseResult = 9
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}
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logger.Printf(
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"cmpp inbound event=submit_rejected protocol=%s packet_type=%s account=%s remote=%s seq=%d phone=%s result=%d stage=business duration_ms=%d content_chars=%d content_hash=%s reason=%q",
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clientProtocol, req.protocol, account, remote, req.sequenceID, phone, responseResult, time.Since(startedAt).Milliseconds(), len([]rune(content)), contentHash, reason,
|
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)
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setInboundSubmitResponse(response.Packer, 0, responseResult)
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protocolLogger := s.submitResponseProtocolLogger(account, clientProtocol, req.sequenceID, phone, result.MessageID, 0, responseResult)
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response.AfterSend = func(sendErr error) {
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releaseSubmitBarrier()
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protocolLogger(sendErr)
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}
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return false, nil
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}
|
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gatewayMsgID := messageIDFrom(result.MessageID, req.sequenceID)
|
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setInboundSubmitResponse(response.Packer, gatewayMsgID, 0)
|
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responseMessages := result.Messages
|
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if len(responseMessages) == 0 {
|
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responseMessages = []submitResponseMessage{{PhoneNumber: phone, MessageID: result.MessageID}}
|
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}
|
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for index, acceptedMessage := range responseMessages {
|
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acceptedPhone := strings.TrimSpace(acceptedMessage.PhoneNumber)
|
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if acceptedPhone == "" && index < len(phones) {
|
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acceptedPhone = phones[index]
|
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}
|
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rememberDownstream(downstreamSession{
|
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messageID: acceptedMessage.MessageID,
|
|
account: account,
|
|
tenantID: result.TenantID,
|
|
applicationID: result.ApplicationID,
|
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enterpriseCode: session.enterpriseCode,
|
|
protocol: clientProtocol,
|
|
srcID: strings.TrimSpace(req.srcID),
|
|
phoneNumber: acceptedPhone,
|
|
gatewayMsgID: gatewayMsgID,
|
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remoteIP: remoteIP(remote),
|
|
connectedAt: time.Now().UTC(),
|
|
connectionID: session.connectionID,
|
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conn: packet.Conn,
|
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mu: &sync.Mutex{},
|
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presence: s.PresenceStore,
|
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instanceID: s.gatewayInstanceID(),
|
|
report: session.report,
|
|
deliveryReport: session.deliveryReport,
|
|
protocolLog: session.protocolLog,
|
|
})
|
|
}
|
|
if current := findSessionByConn(packet.Conn); current != nil && current.report != nil {
|
|
go current.report(current, "submit", "")
|
|
}
|
|
response.AfterSend = func(sendErr error) {
|
|
releaseSubmitBarrier()
|
|
s.emitProtocolLog(protocolLogEvent{
|
|
Protocol: "cmpp",
|
|
Direction: "platform_to_client",
|
|
EventType: "submit_resp",
|
|
Status: protocolSendStatus(sendErr),
|
|
TenantID: result.TenantID,
|
|
ApplicationID: result.ApplicationID,
|
|
Account: account,
|
|
MessageID: result.MessageID,
|
|
GatewayMessageID: fmt.Sprint(gatewayMsgID),
|
|
Phone: phone,
|
|
ResultCode: protocolSendResultCode(sendErr, 0),
|
|
Detail: protocolSubmitResponseDetail(req.sequenceID, sendErr),
|
|
})
|
|
if sendErr != nil {
|
|
return
|
|
}
|
|
go func() {
|
|
if _, err := s.flushPending(account, logger); err != nil {
|
|
logger.Printf("cmpp inbound event=post_submit_pending_flush_failed account=%s message_id=%s error=%q", account, result.MessageID, err.Error())
|
|
}
|
|
}()
|
|
}
|
|
logger.Printf(
|
|
"cmpp inbound event=submit_accepted protocol=%s packet_type=%s account=%s remote=%s seq=%d phone=%s dest_count=%d accepted_count=%d result=0 message_id=%s gateway_message_id=%d duration_ms=%d content_chars=%d content_hash=%s",
|
|
clientProtocol, req.protocol, account, remote, req.sequenceID, phone, len(phones), len(responseMessages), result.MessageID, gatewayMsgID, time.Since(startedAt).Milliseconds(), len([]rune(content)), contentHash,
|
|
)
|
|
return false, nil
|
|
}
|
|
|
|
func (s Server) submitResponseProtocolLogger(
|
|
account string,
|
|
protocol string,
|
|
sequenceID uint32,
|
|
phone string,
|
|
messageID string,
|
|
gatewayMessageID uint64,
|
|
result uint32,
|
|
) func(error) {
|
|
return func(sendErr error) {
|
|
s.emitProtocolLog(protocolLogEvent{
|
|
Protocol: "cmpp",
|
|
Direction: "platform_to_client",
|
|
EventType: "submit_resp",
|
|
Status: protocolSendStatus(sendErr),
|
|
Account: account,
|
|
MessageID: messageID,
|
|
GatewayMessageID: fmt.Sprint(gatewayMessageID),
|
|
Phone: phone,
|
|
ResultCode: protocolSendResultCode(sendErr, result),
|
|
Detail: protocolSubmitResponseDetail(sequenceID, sendErr),
|
|
})
|
|
}
|
|
}
|
|
|
|
func protocolSendStatus(sendErr error) string {
|
|
if sendErr != nil {
|
|
return "failed"
|
|
}
|
|
return "success"
|
|
}
|
|
|
|
func protocolSendResultCode(sendErr error, result uint32) string {
|
|
if sendErr != nil {
|
|
return "SEND_FAILED"
|
|
}
|
|
return fmt.Sprint(result)
|
|
}
|
|
|
|
func protocolSubmitResponseDetail(sequenceID uint32, sendErr error) map[string]any {
|
|
detail := map[string]any{"sequenceId": sequenceID}
|
|
if sendErr != nil {
|
|
detail["error"] = sendErr.Error()
|
|
}
|
|
return detail
|
|
}
|
|
|
|
func (s Server) emitProtocolLog(event protocolLogEvent) {
|
|
go func() {
|
|
ctx, cancel := context.WithTimeout(context.Background(), defaultHTTPTimeout)
|
|
defer cancel()
|
|
if err := s.post(ctx, "/gateway/events/protocol-log", event, nil); err != nil {
|
|
log.Printf("cmpp inbound protocol_event direction=%s event=%s status=telemetry_failed account=%s message_id=%s error=%q", event.Direction, event.EventType, event.Account, event.MessageID, err)
|
|
}
|
|
}()
|
|
}
|
|
|
|
func (s Server) handleActivity(_ *cmpp.Response, packet *cmpp.Packet, logger *log.Logger) (bool, error) {
|
|
session := findSessionByConn(packet.Conn)
|
|
if session == nil {
|
|
return true, nil
|
|
}
|
|
switch response := packet.Packer.(type) {
|
|
case *cmpp.CmppActiveTestReqPkt, *cmpp.CmppActiveTestRspPkt:
|
|
if session.report != nil {
|
|
go s.reportConnectionOrDisconnect(session, "heartbeat", "")
|
|
}
|
|
case *cmpp.Cmpp2DeliverRspPkt:
|
|
handleDownstreamAcknowledgement(packet.Conn, response.SeqId, response.MsgId, uint32(response.Result), logger)
|
|
case *cmpp.Cmpp3DeliverRspPkt:
|
|
handleDownstreamAcknowledgement(packet.Conn, response.SeqId, response.MsgId, response.Result, logger)
|
|
}
|
|
return true, nil
|
|
}
|
|
|
|
func (s Server) reportConnection(session *downstreamSession, status string, errorMessage string) {
|
|
_ = s.reportConnectionChecked(session, status, errorMessage)
|
|
}
|
|
|
|
func (s Server) reportConnectionChecked(session *downstreamSession, status string, errorMessage string) error {
|
|
if session == nil || strings.TrimSpace(session.account) == "" || strings.TrimSpace(session.connectionID) == "" {
|
|
return nil
|
|
}
|
|
event := downstreamConnectionEvent{
|
|
Account: session.account, ConnectionID: session.connectionID, Status: status,
|
|
RemoteIP: session.remoteIP, Protocol: session.protocol,
|
|
ConnectedAt: formatRFC3339Nano(session.connectedAt), ObservedAt: formatRFC3339Nano(time.Now()),
|
|
ErrorMessage: errorMessage,
|
|
}
|
|
if err := s.post(context.Background(), "/gateway/events/inbound/connection", event, nil); err != nil {
|
|
log.Printf("cmpp inbound connection state callback failed account=%s connection_id=%s status=%s err=%v", session.account, session.connectionID, status, err)
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s Server) reportConnectionOrDisconnect(session *downstreamSession, status string, errorMessage string) {
|
|
if err := s.reportConnectionChecked(session, status, errorMessage); err != nil && status != "disconnected" {
|
|
_ = s.reportConnectionChecked(session, "disconnected", err.Error())
|
|
forgetDownstream(session)
|
|
if session.conn != nil {
|
|
session.conn.Close()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s Server) handleConnectionClosed(conn *cmpp.Conn) {
|
|
downstreamSubmitBarrier.Lock()
|
|
delete(downstreamSubmitBarrier.byConn, conn)
|
|
downstreamSubmitBarrier.Unlock()
|
|
session := findSessionByConn(conn)
|
|
if session == nil {
|
|
return
|
|
}
|
|
forgetDownstream(session)
|
|
_ = s.reportConnectionChecked(session, "disconnected", "CMPP client connection closed")
|
|
}
|
|
|
|
func (s Server) reportDownstreamDelivery(event downstreamDeliveryLifecycleEvent) {
|
|
if strings.TrimSpace(event.DeliveryID) == "" {
|
|
return
|
|
}
|
|
payload := map[string]any{
|
|
"id": event.DeliveryID, "connectionId": event.ConnectionID,
|
|
"sequenceId": strconv.FormatUint(uint64(event.SequenceID), 10),
|
|
"messageId": strconv.FormatUint(event.MessageID, 10),
|
|
}
|
|
switch event.Kind {
|
|
case "sent":
|
|
payload["sentAt"] = formatRFC3339Nano(event.ObservedAt)
|
|
payload["ackDeadlineAt"] = formatRFC3339Nano(event.AckDeadlineAt)
|
|
_ = s.post(context.Background(), "/gateway/events/downstream/sent", payload, nil)
|
|
case "acknowledged":
|
|
payload["result"] = event.Result
|
|
payload["acknowledgedAt"] = formatRFC3339Nano(event.ObservedAt)
|
|
_ = s.post(context.Background(), "/gateway/events/downstream/acknowledged", payload, nil)
|
|
case "failed":
|
|
payload["failureType"] = event.FailureType
|
|
payload["errorMessage"] = event.ErrorMessage
|
|
_ = s.post(context.Background(), "/gateway/events/downstream/failed", payload, nil)
|
|
}
|
|
}
|
|
|
|
type inboundSubmitPacket struct {
|
|
protocol string
|
|
pkTotal uint8
|
|
pkNumber uint8
|
|
tpUdhi uint8
|
|
msgFmt uint8
|
|
msgSrc string
|
|
srcID string
|
|
destTerminalIDs []string
|
|
msgContent string
|
|
sequenceID uint32
|
|
}
|
|
|
|
func normalizeInboundSubmit(packet any) (inboundSubmitPacket, bool) {
|
|
switch req := packet.(type) {
|
|
case *cmpp.Cmpp2SubmitReqPkt:
|
|
return inboundSubmitPacket{
|
|
protocol: "cmpp20", pkTotal: req.PkTotal, pkNumber: req.PkNumber, tpUdhi: req.TpUdhi, msgFmt: req.MsgFmt,
|
|
msgSrc: req.MsgSrc, srcID: req.SrcId, destTerminalIDs: req.DestTerminalId,
|
|
msgContent: req.MsgContent, sequenceID: req.SeqId,
|
|
}, true
|
|
case *cmpp.Cmpp3SubmitReqPkt:
|
|
return inboundSubmitPacket{
|
|
protocol: "cmpp30", pkTotal: req.PkTotal, pkNumber: req.PkNumber, tpUdhi: req.TpUdhi, msgFmt: req.MsgFmt,
|
|
msgSrc: req.MsgSrc, srcID: req.SrcId, destTerminalIDs: req.DestTerminalId,
|
|
msgContent: req.MsgContent, sequenceID: req.SeqId,
|
|
}, true
|
|
default:
|
|
return inboundSubmitPacket{}, false
|
|
}
|
|
}
|
|
|
|
func setInboundSubmitResponse(packet any, messageID uint64, result uint32) {
|
|
switch resp := packet.(type) {
|
|
case *cmpp.Cmpp2SubmitRspPkt:
|
|
resp.MsgId = messageID
|
|
resp.Result = uint8(result)
|
|
case *cmpp.Cmpp3SubmitRspPkt:
|
|
resp.MsgId = messageID
|
|
resp.Result = result
|
|
}
|
|
}
|
|
|
|
func setInboundConnectResponse(packet any, status uint8, authSource string, secret string, version cmpp.Type) {
|
|
switch resp := packet.(type) {
|
|
case *cmpp.Cmpp2ConnRspPkt:
|
|
resp.Status = status
|
|
resp.AuthSrc = authSource
|
|
resp.Secret = secret
|
|
resp.Version = version
|
|
case *cmpp.Cmpp3ConnRspPkt:
|
|
resp.Status = uint32(status)
|
|
resp.AuthSrc = authSource
|
|
resp.Secret = secret
|
|
resp.Version = version
|
|
}
|
|
}
|
|
|
|
func findSessionByConn(conn *cmpp.Conn) *downstreamSession {
|
|
downstreamRegistry.RLock()
|
|
defer downstreamRegistry.RUnlock()
|
|
return downstreamRegistry.byConn[conn]
|
|
}
|
|
|
|
func cmppVersionName(version cmpp.Type) string {
|
|
switch version {
|
|
case cmpp.V20:
|
|
return "cmpp20"
|
|
case cmpp.V21:
|
|
return "cmpp21"
|
|
case cmpp.V30:
|
|
return "cmpp30"
|
|
default:
|
|
return fmt.Sprintf("unknown_0x%02x", uint8(version))
|
|
}
|
|
}
|
|
|
|
func (s Server) authenticate(remote net.Addr, account string, authSource string, timestamp uint32) (authResponse, error) {
|
|
payload := authRequest{
|
|
Account: account,
|
|
AuthSource: base64.StdEncoding.EncodeToString([]byte(authSource)),
|
|
Timestamp: timestamp,
|
|
RemoteIP: remoteIP(remote),
|
|
}
|
|
var result authResponse
|
|
err := s.post(context.Background(), "/gateway/events/inbound/authenticate", payload, &result)
|
|
return result, err
|
|
}
|
|
|
|
func (s Server) submit(remote net.Addr, payload submitRequest) (submitResponse, error) {
|
|
payload.RemoteIP = remoteIP(remote)
|
|
var result submitResponse
|
|
err := s.post(context.Background(), "/gateway/events/inbound/submit", payload, &result)
|
|
return result, err
|
|
}
|
|
|
|
type pendingDeliveryRequest struct {
|
|
Account string `json:"account"`
|
|
Limit int `json:"limit,omitempty"`
|
|
}
|
|
|
|
type pendingDelivery struct {
|
|
ID string `json:"id"`
|
|
DeliveryType string `json:"deliveryType"`
|
|
Payload json.RawMessage `json:"payload"`
|
|
CreatedAt time.Time `json:"createdAt"`
|
|
}
|
|
|
|
type pendingFlushResult struct {
|
|
Account string
|
|
Deliveries int
|
|
DeliveredCount int
|
|
FailedCount int
|
|
WaitingCount int
|
|
LastError string
|
|
}
|
|
|
|
func (s Server) flushPending(account string, logger *log.Logger) (pendingFlushResult, error) {
|
|
result := pendingFlushResult{Account: account}
|
|
if account == "" {
|
|
return result, nil
|
|
}
|
|
var deliveries []pendingDelivery
|
|
if err := s.post(context.Background(), "/gateway/events/downstream/pending", pendingDeliveryRequest{Account: account, Limit: 100}, &deliveries); err != nil {
|
|
logger.Printf("cmpp inbound pending delivery fetch failed account=%s err=%v", account, err)
|
|
result.LastError = err.Error()
|
|
return result, err
|
|
}
|
|
result.Deliveries = len(deliveries)
|
|
for _, delivery := range deliveries {
|
|
sendResult, err := s.pushPendingDelivery(account, delivery)
|
|
if err != nil {
|
|
result.FailedCount++
|
|
result.LastError = err.Error()
|
|
_ = s.post(context.Background(), "/gateway/events/downstream/failed", map[string]any{
|
|
"id": delivery.ID, "errorMessage": err.Error(), "failureType": "send_failed",
|
|
"connectionId": sendResult.ConnectionID, "sequenceId": sendResult.SequenceID,
|
|
"messageId": sendResult.MessageID, "sentAt": sendResult.SentAt,
|
|
}, nil)
|
|
continue
|
|
}
|
|
if sendResult.Sent {
|
|
result.DeliveredCount++
|
|
continue
|
|
}
|
|
if sendResult.ReasonCode == "SUBMIT_RESPONSE_PENDING" {
|
|
result.WaitingCount++
|
|
continue
|
|
}
|
|
errorMessage := defaultString(sendResult.ErrorMessage, "gateway did not complete downstream delivery")
|
|
failureType := "unrecoverable"
|
|
if sendResult.Retryable {
|
|
failureType = "send_failed"
|
|
result.WaitingCount++
|
|
} else {
|
|
result.FailedCount++
|
|
}
|
|
result.LastError = errorMessage
|
|
_ = s.post(context.Background(), "/gateway/events/downstream/failed", map[string]any{
|
|
"id": delivery.ID, "errorMessage": errorMessageWithCode(errorMessage, sendResult.ReasonCode),
|
|
"failureType": failureType, "connectionId": sendResult.ConnectionID,
|
|
"sequenceId": sendResult.SequenceID, "messageId": sendResult.MessageID, "sentAt": sendResult.SentAt,
|
|
}, nil)
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (s Server) pushPendingDelivery(account string, delivery pendingDelivery) (DownstreamSendResult, error) {
|
|
switch delivery.DeliveryType {
|
|
case "receipt":
|
|
var event DownstreamReceipt
|
|
if err := json.Unmarshal(delivery.Payload, &event); err != nil {
|
|
return DownstreamSendResult{}, err
|
|
}
|
|
event.DeliveryID = delivery.ID
|
|
event.Account = defaultString(event.Account, account)
|
|
allowRecovery := !delivery.CreatedAt.IsZero() && time.Since(delivery.CreatedAt) >= 5*time.Second
|
|
return pushReceiptWithResult(event, allowRecovery)
|
|
case "uplink":
|
|
var event DownstreamUplink
|
|
if err := json.Unmarshal(delivery.Payload, &event); err != nil {
|
|
return DownstreamSendResult{}, err
|
|
}
|
|
event.DeliveryID = delivery.ID
|
|
event.Account = defaultString(event.Account, account)
|
|
return PushUplinkWithResult(event)
|
|
default:
|
|
return DownstreamSendResult{}, fmt.Errorf("unsupported downstream delivery type %q", delivery.DeliveryType)
|
|
}
|
|
}
|
|
|
|
func (s Server) post(ctx context.Context, path string, payload any, result any) error {
|
|
client := s.HTTPClient
|
|
if client == nil {
|
|
client = &http.Client{Timeout: defaultHTTPTimeout}
|
|
}
|
|
body, err := json.Marshal(payload)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
req, err := http.NewRequestWithContext(ctx, http.MethodPost, strings.TrimRight(apiBaseURL(s.APIBaseURL), "/")+path, bytes.NewReader(body))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
req.Header.Set("Content-Type", "application/json")
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer resp.Body.Close()
|
|
responseBody, err := io.ReadAll(io.LimitReader(resp.Body, 64*1024))
|
|
if err != nil {
|
|
return fmt.Errorf("read api response: %w", err)
|
|
}
|
|
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
|
|
detail := strings.TrimSpace(string(responseBody))
|
|
if detail == "" {
|
|
return fmt.Errorf("api returned %s", resp.Status)
|
|
}
|
|
return fmt.Errorf("api returned %s: %s", resp.Status, detail)
|
|
}
|
|
if result != nil {
|
|
if len(responseBody) == 0 {
|
|
return io.EOF
|
|
}
|
|
return json.Unmarshal(responseBody, result)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func decodeContent(format uint8, content string) (string, error) {
|
|
switch format {
|
|
case 8:
|
|
return cmpputils.Ucs2ToUtf8(content)
|
|
case 15:
|
|
return cmpputils.GB18030ToUtf8(content)
|
|
default:
|
|
return content, nil
|
|
}
|
|
}
|
|
|
|
func decodeInboundSubmitContent(req inboundSubmitPacket) (string, *inboundLongMessageFragment, error) {
|
|
raw := []byte(req.msgContent)
|
|
if req.tpUdhi == 0 && req.pkTotal <= 1 {
|
|
content, err := decodeContent(req.msgFmt, req.msgContent)
|
|
return content, nil, err
|
|
}
|
|
if len(raw) == 0 {
|
|
return "", nil, errors.New("UDH message content is empty")
|
|
}
|
|
|
|
headerLength := int(raw[0]) + 1
|
|
if headerLength > len(raw) {
|
|
return "", nil, fmt.Errorf("UDH length %d exceeds message content length %d", headerLength, len(raw))
|
|
}
|
|
|
|
var reference, total, index int
|
|
switch {
|
|
case len(raw) >= 6 && raw[0] == 0x05 && raw[1] == 0x00 && raw[2] == 0x03:
|
|
reference = int(raw[3])
|
|
total = int(raw[4])
|
|
index = int(raw[5])
|
|
case len(raw) >= 7 && raw[0] == 0x06 && raw[1] == 0x08 && raw[2] == 0x04:
|
|
reference = int(raw[3])<<8 | int(raw[4])
|
|
total = int(raw[5])
|
|
index = int(raw[6])
|
|
default:
|
|
if req.pkTotal > 1 {
|
|
return "", nil, errors.New("concatenated CMPP submit is missing a supported 8-bit or 16-bit UDH")
|
|
}
|
|
content, err := decodeContent(req.msgFmt, string(raw[headerLength:]))
|
|
return content, nil, err
|
|
}
|
|
if total < 2 || index < 1 || index > total {
|
|
return "", nil, fmt.Errorf("invalid concatenated UDH total/index %d/%d", index, total)
|
|
}
|
|
if req.pkTotal > 0 && int(req.pkTotal) != total {
|
|
return "", nil, fmt.Errorf("PkTotal %d does not match UDH total %d", req.pkTotal, total)
|
|
}
|
|
if req.pkNumber > 0 && int(req.pkNumber) != index {
|
|
return "", nil, fmt.Errorf("PkNumber %d does not match UDH index %d", req.pkNumber, index)
|
|
}
|
|
|
|
content, err := decodeContent(req.msgFmt, string(raw[headerLength:]))
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
return content, &inboundLongMessageFragment{
|
|
Reference: reference,
|
|
Total: total,
|
|
Index: index,
|
|
Format: int(req.msgFmt),
|
|
}, nil
|
|
}
|
|
|
|
func apiBaseURL(value string) string {
|
|
if value == "" {
|
|
return "http://127.0.0.1:3000/api"
|
|
}
|
|
return value
|
|
}
|
|
|
|
func remoteIP(addr net.Addr) string {
|
|
if tcp, ok := addr.(*net.TCPAddr); ok {
|
|
return tcp.IP.String()
|
|
}
|
|
host, _, err := net.SplitHostPort(addr.String())
|
|
if err == nil {
|
|
return host
|
|
}
|
|
return addr.String()
|
|
}
|
|
|
|
func messageIDFrom(value string, seq uint32) uint64 {
|
|
hash := md5.Sum([]byte(value))
|
|
result := uint64(seq)
|
|
for _, item := range hash[:6] {
|
|
result = (result << 8) + uint64(item)
|
|
}
|
|
if result == 0 {
|
|
return uint64(time.Now().UnixNano())
|
|
}
|
|
return result
|
|
}
|
|
|
|
func rememberDownstream(session downstreamSession) {
|
|
if session.messageID == "" || session.conn == nil {
|
|
return
|
|
}
|
|
session.touchPresence("connected", true, false)
|
|
downstreamRegistry.Lock()
|
|
if existing := downstreamRegistry.byMessageID[session.messageID]; existing != nil && existing.conn == session.conn {
|
|
// A downstream long message returns one SUBMIT_RESP per fragment but is
|
|
// persisted as one platform message. Keep the first fragment Msg_Id so
|
|
// online delivery and restart recovery (which persists the first
|
|
// Sequence_Id) address the same client-side message.
|
|
session.gatewayMsgID = existing.gatewayMsgID
|
|
}
|
|
downstreamRegistry.byMessageID[session.messageID] = &session
|
|
downstreamRegistry.byConn[session.conn] = &session
|
|
if session.account != "" {
|
|
downstreamRegistry.byAccount[session.account] = &session
|
|
}
|
|
downstreamRegistry.Unlock()
|
|
}
|
|
|
|
func rememberAccount(session *downstreamSession, maxConnections int) bool {
|
|
if session == nil || session.account == "" || session.conn == nil {
|
|
return false
|
|
}
|
|
if maxConnections <= 0 {
|
|
maxConnections = 1
|
|
}
|
|
session.touchPresence("connected", false, false)
|
|
downstreamRegistry.Lock()
|
|
defer downstreamRegistry.Unlock()
|
|
active := 0
|
|
for _, current := range downstreamRegistry.byConn {
|
|
if current != nil && current.account == session.account {
|
|
active++
|
|
}
|
|
}
|
|
if active >= maxConnections {
|
|
return false
|
|
}
|
|
downstreamRegistry.byAccount[session.account] = session
|
|
downstreamRegistry.byConn[session.conn] = session
|
|
return true
|
|
}
|
|
|
|
func forgetDownstream(session *downstreamSession) {
|
|
if session == nil {
|
|
return
|
|
}
|
|
downstreamRegistry.Lock()
|
|
for messageID, current := range downstreamRegistry.byMessageID {
|
|
if current != nil && current.conn == session.conn {
|
|
delete(downstreamRegistry.byMessageID, messageID)
|
|
}
|
|
}
|
|
if session.account != "" {
|
|
if current := downstreamRegistry.byAccount[session.account]; current == session {
|
|
delete(downstreamRegistry.byAccount, session.account)
|
|
}
|
|
}
|
|
if current := downstreamRegistry.byConn[session.conn]; current == session {
|
|
delete(downstreamRegistry.byConn, session.conn)
|
|
}
|
|
downstreamRegistry.Unlock()
|
|
_ = session.removePresence()
|
|
}
|
|
|
|
func (s Server) runPendingFlusher(logger *log.Logger) {
|
|
ticker := time.NewTicker(s.pendingFlushInterval())
|
|
defer ticker.Stop()
|
|
for range ticker.C {
|
|
s.flushOnlineAccounts(logger)
|
|
s.recoverPendingCandidates(logger)
|
|
}
|
|
}
|
|
|
|
func (s Server) flushOnlineAccounts(logger *log.Logger) {
|
|
for _, account := range onlineAccounts() {
|
|
_, _ = s.flushPending(account, logger)
|
|
}
|
|
}
|
|
|
|
func (s Server) recoverPendingCandidates(logger *log.Logger) {
|
|
candidates, err := ListRecoveryCandidates(context.Background(), s.PresenceStore)
|
|
if err != nil {
|
|
logger.Printf("cmpp inbound recovery candidate refresh failed err=%v", err)
|
|
return
|
|
}
|
|
for _, candidate := range candidates {
|
|
account := strings.TrimSpace(candidate.Account)
|
|
if account == "" {
|
|
continue
|
|
}
|
|
activeRecovery := DownstreamRecoveryStatus{
|
|
Account: account,
|
|
GatewayInstanceID: s.gatewayInstanceID(),
|
|
}
|
|
if s.RecoveryStore != nil {
|
|
decision, recoveryErr := s.RecoveryStore.StartAccountRecovery(context.Background(), account, s.gatewayInstanceID())
|
|
if recoveryErr != nil {
|
|
logger.Printf("cmpp inbound recovery start failed account=%s err=%v", account, recoveryErr)
|
|
continue
|
|
}
|
|
if !decision.Allowed {
|
|
logger.Printf("cmpp inbound recovery skipped account=%s reason=%s", account, decision.SkipReason)
|
|
decision.Status.Account = account
|
|
decision.Status.GatewayInstanceID = s.gatewayInstanceID()
|
|
decision.Status.State = defaultString(decision.Status.State, "failed")
|
|
decision.Status.LastSkipReason = defaultString(decision.Status.LastSkipReason, decision.SkipReason)
|
|
if decision.Status.FailureCategory == "" {
|
|
decision.Status.FailureCategory = recoveryFailureCategory(decision.Status.State, "", decision.Status.LastSkipReason)
|
|
}
|
|
s.syncRecoveryStatus(logger, account, decision.Status)
|
|
continue
|
|
}
|
|
activeRecovery = decision.Status
|
|
activeRecovery.Account = account
|
|
activeRecovery.GatewayInstanceID = s.gatewayInstanceID()
|
|
}
|
|
result, flushErr := s.flushPending(account, logger)
|
|
if s.RecoveryStore != nil {
|
|
status := DownstreamRecoveryStatus{
|
|
Account: account,
|
|
GatewayInstanceID: s.gatewayInstanceID(),
|
|
LockToken: activeRecovery.LockToken,
|
|
LockOwner: defaultString(activeRecovery.LockOwner, s.gatewayInstanceID()),
|
|
LockAcquiredAt: activeRecovery.LockAcquiredAt,
|
|
LockExpiresAt: activeRecovery.LockExpiresAt,
|
|
LastAttemptAt: activeRecovery.LastAttemptAt,
|
|
}
|
|
switch {
|
|
case flushErr != nil:
|
|
status.State = "failed"
|
|
status.LastError = flushErr.Error()
|
|
status.FailureCategory = recoveryFailureCategory(status.State, status.LastError, status.LastSkipReason)
|
|
case result.WaitingCount > 0 && result.DeliveredCount == 0 && result.FailedCount == 0:
|
|
status.State = "waiting_connection"
|
|
status.LastError = "downstream client is not connected"
|
|
status.FailureCategory = recoveryFailureCategory(status.State, status.LastError, status.LastSkipReason)
|
|
case result.FailedCount > 0 && result.DeliveredCount > 0:
|
|
status.State = "partial"
|
|
status.LastError = result.LastError
|
|
status.FailureCategory = recoveryFailureCategory(status.State, status.LastError, status.LastSkipReason)
|
|
case result.FailedCount > 0:
|
|
status.State = "failed"
|
|
status.LastError = result.LastError
|
|
status.FailureCategory = recoveryFailureCategory(status.State, status.LastError, status.LastSkipReason)
|
|
default:
|
|
status.State = "success"
|
|
status.LastError = ""
|
|
status.FailureCategory = ""
|
|
}
|
|
if err := s.RecoveryStore.CompleteAccountRecovery(context.Background(), status); err != nil {
|
|
logger.Printf("cmpp inbound recovery completion failed account=%s err=%v", account, err)
|
|
if err == ErrRecoveryLockLost {
|
|
status.State = "failed"
|
|
status.LastSkipReason = "lock_lost"
|
|
status.FailureCategory = "lock_lost"
|
|
s.syncRecoveryStatus(logger, account, status)
|
|
}
|
|
} else if persisted, err := s.RecoveryStore.GetAccountRecoveryStatus(context.Background(), account); err != nil {
|
|
logger.Printf("cmpp inbound recovery status fetch failed account=%s err=%v", account, err)
|
|
} else {
|
|
s.syncRecoveryStatus(logger, account, persisted)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s Server) syncRecoveryStatus(logger *log.Logger, account string, status DownstreamRecoveryStatus) {
|
|
if err := s.post(context.Background(), "/gateway/events/downstream/recovery-status", map[string]any{
|
|
"account": status.Account,
|
|
"gatewayInstanceId": status.GatewayInstanceID,
|
|
"state": status.State,
|
|
"lockOwner": status.LockOwner,
|
|
"lockExpiresAt": formatRFC3339Nano(status.LockExpiresAt),
|
|
"lastAttemptAt": formatRFC3339Nano(status.LastAttemptAt),
|
|
"lastSuccessAt": formatRFC3339Nano(status.LastSuccessAt),
|
|
"lastFailureAt": formatRFC3339Nano(status.LastFailureAt),
|
|
"nextRetryAt": formatRFC3339Nano(status.NextRetryAt),
|
|
"attemptCount": status.AttemptCount,
|
|
"failureCategory": status.FailureCategory,
|
|
"lastError": status.LastError,
|
|
"lastSkipReason": status.LastSkipReason,
|
|
}, nil); err != nil {
|
|
logger.Printf("cmpp inbound recovery status sync failed account=%s err=%v", account, err)
|
|
}
|
|
}
|
|
|
|
func recoveryFailureCategory(state string, lastError string, lastSkipReason string) string {
|
|
if state == "success" || state == "running" {
|
|
return ""
|
|
}
|
|
if lastSkipReason == "backoff" {
|
|
return "backoff"
|
|
}
|
|
if lastSkipReason == "locked" {
|
|
return "lock_contended"
|
|
}
|
|
if lastSkipReason == "lock_lost" {
|
|
return "lock_lost"
|
|
}
|
|
if state == "waiting_connection" {
|
|
return "client_disconnected"
|
|
}
|
|
if state == "partial" {
|
|
return "partial_delivery_failed"
|
|
}
|
|
if state == "failed" && strings.TrimSpace(lastError) != "" {
|
|
return "flush_failed"
|
|
}
|
|
return "unknown"
|
|
}
|
|
|
|
func onlineAccounts() []string {
|
|
downstreamRegistry.RLock()
|
|
defer downstreamRegistry.RUnlock()
|
|
accounts := make([]string, 0, len(downstreamRegistry.byAccount))
|
|
for account := range downstreamRegistry.byAccount {
|
|
if strings.TrimSpace(account) != "" {
|
|
accounts = append(accounts, account)
|
|
}
|
|
}
|
|
return accounts
|
|
}
|
|
|
|
func PushReceipt(event DownstreamReceipt) (bool, error) {
|
|
result, err := PushReceiptWithResult(event)
|
|
return result.Sent, err
|
|
}
|
|
|
|
func PushReceiptWithResult(event DownstreamReceipt) (DownstreamSendResult, error) {
|
|
return pushReceiptWithResult(event, true)
|
|
}
|
|
|
|
func pushReceiptWithResult(event DownstreamReceipt, allowRecovery bool) (DownstreamSendResult, error) {
|
|
session := findReceiptSession(event.MessageID, event.Account)
|
|
if session == nil && allowRecovery {
|
|
session = recoverReceiptSession(event)
|
|
}
|
|
if session == nil {
|
|
if event.SubmitSequenceID == 0 {
|
|
return DownstreamSendResult{
|
|
Retryable: false,
|
|
ReasonCode: "MISSING_SUBMIT_SEQUENCE_ID",
|
|
ErrorMessage: "历史回执缺少原 Submit Sequence_Id，无法重建 Msg_Id，系统已终止重投",
|
|
}, nil
|
|
}
|
|
if strings.TrimSpace(event.MessageID) == "" || strings.TrimSpace(event.Account) == "" {
|
|
return DownstreamSendResult{
|
|
Retryable: false,
|
|
ReasonCode: "INVALID_RECEIPT_PAYLOAD",
|
|
ErrorMessage: "状态回执缺少平台消息 ID 或客户账号，系统已终止重投",
|
|
}, nil
|
|
}
|
|
return DownstreamSendResult{
|
|
Retryable: true,
|
|
ReasonCode: "CLIENT_DISCONNECTED",
|
|
ErrorMessage: "下游客户端当前未连接，等待自动重试",
|
|
}, nil
|
|
}
|
|
if downstreamSubmitResponsePending(session.conn) {
|
|
return DownstreamSendResult{
|
|
Retryable: true,
|
|
ReasonCode: "SUBMIT_RESPONSE_PENDING",
|
|
ErrorMessage: "客户 SubmitResp 尚未完成写出，回执已保留并等待响应后投递",
|
|
}, nil
|
|
}
|
|
stat := strings.TrimSpace(event.RawStatus)
|
|
if stat == "" {
|
|
stat = cmppReceiptStatus(event.ReceiptStatus)
|
|
}
|
|
when := time.Now()
|
|
if event.DeliveredAt != "" {
|
|
if parsed, err := time.Parse(time.RFC3339Nano, event.DeliveredAt); err == nil {
|
|
when = parsed
|
|
}
|
|
}
|
|
receipt := &cmpp.CmppReceiptPkt{
|
|
MsgId: session.gatewayMsgID,
|
|
Stat: stat,
|
|
SubmitTime: when.Format("0601021504"),
|
|
DoneTime: when.Format("0601021504"),
|
|
DestTerminalId: defaultString(event.PhoneNumber, session.phoneNumber),
|
|
SmscSequence: uint32(time.Now().UnixNano() & 0xffffffff),
|
|
}
|
|
receiptBytes, err := receipt.Pack()
|
|
if err != nil {
|
|
return DownstreamSendResult{}, err
|
|
}
|
|
deliver := downstreamDeliverPacket(session, session.gatewayMsgID, session.srcID, defaultString(event.PhoneNumber, session.phoneNumber), 0, 1, string(receiptBytes))
|
|
return sendDownstream(session, deliver, event.DeliveryID)
|
|
}
|
|
|
|
func beginDownstreamSubmitBarrier(conn *cmpp.Conn) func() {
|
|
if conn == nil {
|
|
return func() {}
|
|
}
|
|
downstreamSubmitBarrier.Lock()
|
|
downstreamSubmitBarrier.byConn[conn]++
|
|
downstreamSubmitBarrier.Unlock()
|
|
var once sync.Once
|
|
return func() {
|
|
once.Do(func() {
|
|
downstreamSubmitBarrier.Lock()
|
|
if downstreamSubmitBarrier.byConn[conn] <= 1 {
|
|
delete(downstreamSubmitBarrier.byConn, conn)
|
|
} else {
|
|
downstreamSubmitBarrier.byConn[conn]--
|
|
}
|
|
downstreamSubmitBarrier.Unlock()
|
|
})
|
|
}
|
|
}
|
|
|
|
func downstreamSubmitResponsePending(conn *cmpp.Conn) bool {
|
|
if conn == nil {
|
|
return false
|
|
}
|
|
downstreamSubmitBarrier.RLock()
|
|
defer downstreamSubmitBarrier.RUnlock()
|
|
return downstreamSubmitBarrier.byConn[conn] > 0
|
|
}
|
|
|
|
func findReceiptSession(messageID string, account string) *downstreamSession {
|
|
downstreamRegistry.RLock()
|
|
defer downstreamRegistry.RUnlock()
|
|
if messageID != "" {
|
|
return downstreamRegistry.byMessageID[messageID]
|
|
}
|
|
if account != "" {
|
|
return downstreamRegistry.byAccount[account]
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func recoverReceiptSession(event DownstreamReceipt) *downstreamSession {
|
|
if event.MessageID == "" || event.SubmitSequenceID == 0 || event.Account == "" {
|
|
return nil
|
|
}
|
|
downstreamRegistry.RLock()
|
|
accountSession := downstreamRegistry.byAccount[event.Account]
|
|
downstreamRegistry.RUnlock()
|
|
if accountSession == nil || accountSession.conn == nil {
|
|
return nil
|
|
}
|
|
recovered := *accountSession
|
|
recovered.messageID = event.MessageID
|
|
recovered.gatewayMsgID = messageIDFrom(defaultString(event.SubmitGroupMessageID, event.MessageID), event.SubmitSequenceID)
|
|
return &recovered
|
|
}
|
|
|
|
func PushUplink(event DownstreamUplink) (bool, error) {
|
|
result, err := PushUplinkWithResult(event)
|
|
return result.Sent, err
|
|
}
|
|
|
|
func PushUplinkWithResult(event DownstreamUplink) (DownstreamSendResult, error) {
|
|
session := findSession(event.MessageID, event.Account)
|
|
if session == nil {
|
|
return DownstreamSendResult{
|
|
Retryable: true,
|
|
ReasonCode: "CLIENT_DISCONNECTED",
|
|
ErrorMessage: "下游客户端当前未连接，等待自动重试",
|
|
}, nil
|
|
}
|
|
content, err := cmpputils.Utf8ToUcs2(event.Content)
|
|
if err != nil {
|
|
return DownstreamSendResult{}, err
|
|
}
|
|
deliver := downstreamDeliverPacket(
|
|
session,
|
|
messageIDFrom(defaultString(event.MessageID, event.Account), uint32(time.Now().UnixNano())),
|
|
defaultString(event.DestID, session.srcID),
|
|
event.PhoneNumber,
|
|
8,
|
|
0,
|
|
content,
|
|
)
|
|
return sendDownstream(session, deliver, event.DeliveryID)
|
|
}
|
|
|
|
func errorMessageWithCode(message string, code string) string {
|
|
message = strings.TrimSpace(message)
|
|
code = strings.TrimSpace(code)
|
|
if message == "" {
|
|
message = "gateway did not complete downstream delivery"
|
|
}
|
|
if code == "" {
|
|
return message
|
|
}
|
|
return fmt.Sprintf("%s (%s)", message, code)
|
|
}
|
|
|
|
func downstreamDeliverPacket(session *downstreamSession, messageID uint64, destID string, sourceTerminalID string, msgFmt uint8, registerDelivery uint8, content string) cmpp.Packer {
|
|
if session != nil && (session.protocol == "cmpp20" || session.protocol == "cmpp21") {
|
|
return &cmpp.Cmpp2DeliverReqPkt{
|
|
MsgId: messageID, DestId: destID, ServiceId: "cmpp", MsgFmt: msgFmt,
|
|
SrcTerminalId: sourceTerminalID, RegisterDelivery: registerDelivery,
|
|
MsgLength: uint8(len(content)), MsgContent: content,
|
|
}
|
|
}
|
|
return &cmpp.Cmpp3DeliverReqPkt{
|
|
MsgId: messageID, DestId: destID, ServiceId: "cmpp", MsgFmt: msgFmt,
|
|
SrcTerminalId: sourceTerminalID, RegisterDelivery: registerDelivery,
|
|
MsgLength: uint8(len(content)), MsgContent: content,
|
|
}
|
|
}
|
|
|
|
func findSession(messageID string, account string) *downstreamSession {
|
|
downstreamRegistry.RLock()
|
|
defer downstreamRegistry.RUnlock()
|
|
if messageID != "" {
|
|
if session := downstreamRegistry.byMessageID[messageID]; session != nil {
|
|
return session
|
|
}
|
|
}
|
|
if account != "" {
|
|
return downstreamRegistry.byAccount[account]
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func sendDownstream(session *downstreamSession, deliver cmpp.Packer, deliveryID string) (DownstreamSendResult, error) {
|
|
session.mu.Lock()
|
|
defer session.mu.Unlock()
|
|
messageID := downstreamDeliverMessageID(deliver)
|
|
if messageID == 0 {
|
|
return DownstreamSendResult{}, errors.New("refusing downstream CMPP_DELIVER with Msg_Id=0")
|
|
}
|
|
sequenceID := <-session.conn.SeqId
|
|
sentAt := time.Now().UTC()
|
|
ackDeadlineAt := sentAt.Add(downstreamAckTimeout())
|
|
result := DownstreamSendResult{
|
|
ConnectionID: session.connectionID,
|
|
SequenceID: strconv.FormatUint(uint64(sequenceID), 10),
|
|
MessageID: strconv.FormatUint(messageID, 10),
|
|
SentAt: formatRFC3339Nano(sentAt),
|
|
AckDeadlineAt: formatRFC3339Nano(ackDeadlineAt),
|
|
}
|
|
tracker := registerDownstreamAck(session, deliveryID, sequenceID, messageID, ackDeadlineAt)
|
|
if err := session.conn.SendPkt(deliver, sequenceID); err != nil {
|
|
removeDownstreamAck(tracker)
|
|
session.recordDownstreamProtocol(deliver, deliveryID, sequenceID, messageID, "failed", "SEND_FAILED", err)
|
|
if session.report != nil {
|
|
go session.report(session, "disconnected", err.Error())
|
|
}
|
|
forgetDownstream(session)
|
|
result.Retryable = true
|
|
result.ReasonCode = "SEND_FAILED"
|
|
result.ErrorMessage = err.Error()
|
|
return result, nil
|
|
}
|
|
session.recordDownstreamProtocol(deliver, deliveryID, sequenceID, messageID, "success", "", nil)
|
|
result.Sent = true
|
|
if deliveryID != "" && session.deliveryReport != nil {
|
|
go session.deliveryReport(downstreamDeliveryLifecycleEvent{
|
|
Kind: "sent", DeliveryID: deliveryID, ConnectionID: session.connectionID,
|
|
SequenceID: sequenceID, MessageID: messageID, ObservedAt: sentAt, AckDeadlineAt: ackDeadlineAt,
|
|
})
|
|
}
|
|
session.touchPresence("connected", false, true)
|
|
if session.report != nil {
|
|
go session.report(session, "deliver", "")
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (session *downstreamSession) recordDownstreamProtocol(
|
|
deliver cmpp.Packer,
|
|
deliveryID string,
|
|
sequenceID uint32,
|
|
messageID uint64,
|
|
status string,
|
|
resultCode string,
|
|
sendErr error,
|
|
) {
|
|
if session == nil || session.protocolLog == nil {
|
|
return
|
|
}
|
|
eventType, phone := downstreamDeliverMetadata(deliver)
|
|
detail := map[string]any{"sequenceId": sequenceID, "deliveryId": deliveryID}
|
|
if sendErr != nil {
|
|
detail["error"] = sendErr.Error()
|
|
}
|
|
session.protocolLog(protocolLogEvent{
|
|
Protocol: "cmpp",
|
|
Direction: "platform_to_client",
|
|
EventType: eventType,
|
|
Status: status,
|
|
TenantID: session.tenantID,
|
|
ApplicationID: session.applicationID,
|
|
Account: session.account,
|
|
MessageID: session.messageID,
|
|
GatewayMessageID: strconv.FormatUint(messageID, 10),
|
|
Phone: defaultString(phone, session.phoneNumber),
|
|
ResultCode: resultCode,
|
|
Detail: detail,
|
|
})
|
|
}
|
|
|
|
func downstreamDeliverMetadata(deliver cmpp.Packer) (string, string) {
|
|
switch packet := deliver.(type) {
|
|
case *cmpp.Cmpp2DeliverReqPkt:
|
|
if packet.RegisterDelivery == 1 {
|
|
return "deliver_receipt", packet.SrcTerminalId
|
|
}
|
|
return "deliver_uplink", packet.SrcTerminalId
|
|
case *cmpp.Cmpp3DeliverReqPkt:
|
|
if packet.RegisterDelivery == 1 {
|
|
return "deliver_receipt", packet.SrcTerminalId
|
|
}
|
|
return "deliver_uplink", packet.SrcTerminalId
|
|
default:
|
|
return "deliver", ""
|
|
}
|
|
}
|
|
|
|
func downstreamDeliverMessageID(deliver cmpp.Packer) uint64 {
|
|
switch packet := deliver.(type) {
|
|
case *cmpp.Cmpp2DeliverReqPkt:
|
|
return packet.MsgId
|
|
case *cmpp.Cmpp3DeliverReqPkt:
|
|
return packet.MsgId
|
|
default:
|
|
return 0
|
|
}
|
|
}
|
|
|
|
func downstreamAckKey(conn *cmpp.Conn, sequenceID uint32) string {
|
|
return fmt.Sprintf("%p:%d", conn, sequenceID)
|
|
}
|
|
|
|
func registerDownstreamAck(session *downstreamSession, deliveryID string, sequenceID uint32, messageID uint64, deadline time.Time) *downstreamAckTracker {
|
|
if session == nil || session.conn == nil || strings.TrimSpace(deliveryID) == "" {
|
|
return nil
|
|
}
|
|
tracker := &downstreamAckTracker{
|
|
deliveryID: deliveryID, connectionID: session.connectionID,
|
|
sequenceID: sequenceID, messageID: messageID, session: session,
|
|
}
|
|
key := downstreamAckKey(session.conn, sequenceID)
|
|
downstreamAckRegistry.Lock()
|
|
downstreamAckRegistry.items[key] = tracker
|
|
downstreamAckRegistry.Unlock()
|
|
tracker.timer = time.AfterFunc(time.Until(deadline), func() {
|
|
timedOut := takeDownstreamAck(session.conn, sequenceID)
|
|
if timedOut == nil || timedOut.session == nil || timedOut.session.deliveryReport == nil {
|
|
return
|
|
}
|
|
timedOut.session.deliveryReport(downstreamDeliveryLifecycleEvent{
|
|
Kind: "failed", DeliveryID: timedOut.deliveryID, ConnectionID: timedOut.connectionID,
|
|
SequenceID: timedOut.sequenceID, MessageID: timedOut.messageID, ObservedAt: time.Now().UTC(),
|
|
FailureType: "ack_timeout", ErrorMessage: "CMPP_DELIVER_RESP timeout",
|
|
})
|
|
})
|
|
return tracker
|
|
}
|
|
|
|
func takeDownstreamAck(conn *cmpp.Conn, sequenceID uint32) *downstreamAckTracker {
|
|
key := downstreamAckKey(conn, sequenceID)
|
|
downstreamAckRegistry.Lock()
|
|
tracker := downstreamAckRegistry.items[key]
|
|
delete(downstreamAckRegistry.items, key)
|
|
downstreamAckRegistry.Unlock()
|
|
if tracker != nil && tracker.timer != nil {
|
|
tracker.timer.Stop()
|
|
}
|
|
return tracker
|
|
}
|
|
|
|
func removeDownstreamAck(tracker *downstreamAckTracker) {
|
|
if tracker == nil || tracker.session == nil {
|
|
return
|
|
}
|
|
_ = takeDownstreamAck(tracker.session.conn, tracker.sequenceID)
|
|
}
|
|
|
|
func handleDownstreamAcknowledgement(conn *cmpp.Conn, sequenceID uint32, messageID uint64, result uint32, logger *log.Logger) {
|
|
tracker := takeDownstreamAck(conn, sequenceID)
|
|
if tracker == nil {
|
|
if logger != nil {
|
|
logger.Printf("cmpp inbound event=deliver_ack_unmatched seq=%d message_id=%d result=%d", sequenceID, messageID, result)
|
|
}
|
|
if session := findSessionByConn(conn); session != nil && session.protocolLog != nil {
|
|
session.protocolLog(protocolLogEvent{
|
|
Protocol: "cmpp",
|
|
Direction: "client_to_platform",
|
|
EventType: "deliver_resp",
|
|
Status: "failed",
|
|
TenantID: session.tenantID,
|
|
ApplicationID: session.applicationID,
|
|
Account: session.account,
|
|
MessageID: session.messageID,
|
|
GatewayMessageID: strconv.FormatUint(messageID, 10),
|
|
Phone: session.phoneNumber,
|
|
ResultCode: strconv.FormatUint(uint64(result), 10),
|
|
Detail: map[string]any{"sequenceId": sequenceID, "unmatched": true},
|
|
})
|
|
}
|
|
return
|
|
}
|
|
if tracker.messageID != messageID {
|
|
if logger != nil {
|
|
logger.Printf("cmpp inbound event=deliver_ack_message_mismatch delivery_id=%s seq=%d expected_message_id=%d actual_message_id=%d", tracker.deliveryID, sequenceID, tracker.messageID, messageID)
|
|
}
|
|
result = 1
|
|
}
|
|
if logger != nil {
|
|
logger.Printf("cmpp inbound event=deliver_acknowledged delivery_id=%s connection_id=%s seq=%d message_id=%d result=%d", tracker.deliveryID, tracker.connectionID, sequenceID, messageID, result)
|
|
}
|
|
if tracker.session != nil && tracker.session.deliveryReport != nil {
|
|
go tracker.session.deliveryReport(downstreamDeliveryLifecycleEvent{
|
|
Kind: "acknowledged", DeliveryID: tracker.deliveryID, ConnectionID: tracker.connectionID,
|
|
SequenceID: sequenceID, MessageID: messageID, Result: result, ObservedAt: time.Now().UTC(),
|
|
})
|
|
}
|
|
if tracker.session != nil && tracker.session.protocolLog != nil {
|
|
status := "success"
|
|
if result != 0 {
|
|
status = "failed"
|
|
}
|
|
tracker.session.protocolLog(protocolLogEvent{
|
|
Protocol: "cmpp",
|
|
Direction: "client_to_platform",
|
|
EventType: "deliver_resp",
|
|
Status: status,
|
|
TenantID: tracker.session.tenantID,
|
|
ApplicationID: tracker.session.applicationID,
|
|
Account: tracker.session.account,
|
|
MessageID: tracker.session.messageID,
|
|
GatewayMessageID: strconv.FormatUint(messageID, 10),
|
|
Phone: tracker.session.phoneNumber,
|
|
ResultCode: strconv.FormatUint(uint64(result), 10),
|
|
Detail: map[string]any{"sequenceId": sequenceID, "deliveryId": tracker.deliveryID},
|
|
})
|
|
}
|
|
}
|
|
|
|
func downstreamAckTimeout() time.Duration {
|
|
configured, err := strconv.Atoi(strings.TrimSpace(os.Getenv("CMPP_DOWNSTREAM_ACK_TIMEOUT_SECONDS")))
|
|
if err != nil || configured <= 0 {
|
|
return defaultDownstreamAckTimeout
|
|
}
|
|
if configured < 5 {
|
|
configured = 5
|
|
}
|
|
return time.Duration(configured) * time.Second
|
|
}
|
|
|
|
func (s Server) pendingFlushInterval() time.Duration {
|
|
if s.PendingFlushInterval > 0 {
|
|
return s.PendingFlushInterval
|
|
}
|
|
return time.Minute
|
|
}
|
|
|
|
func (s Server) logRecoveryCandidates(logger *log.Logger) {
|
|
candidates, err := ListRecoveryCandidates(context.Background(), s.PresenceStore)
|
|
if err != nil {
|
|
logger.Printf("cmpp inbound recovery candidates load failed err=%v", err)
|
|
return
|
|
}
|
|
if len(candidates) == 0 {
|
|
logger.Printf("cmpp inbound recovery candidates loaded count=0")
|
|
return
|
|
}
|
|
accounts := make([]string, 0, len(candidates))
|
|
for _, item := range candidates {
|
|
if strings.TrimSpace(item.Account) != "" {
|
|
accounts = append(accounts, item.Account)
|
|
}
|
|
}
|
|
logger.Printf("cmpp inbound recovery candidates loaded count=%d accounts=%s", len(candidates), strings.Join(accounts, ","))
|
|
}
|
|
|
|
func cmppReceiptStatus(status string) string {
|
|
switch strings.ToLower(strings.TrimSpace(status)) {
|
|
case "delivered":
|
|
return "DELIVRD"
|
|
case "unknown":
|
|
return "UNKNOWN"
|
|
default:
|
|
return "UNDELIV"
|
|
}
|
|
}
|
|
|
|
func defaultString(value string, fallback string) string {
|
|
if value == "" {
|
|
return fallback
|
|
}
|
|
return value
|
|
}
|
|
|
|
func formatRFC3339Nano(value time.Time) string {
|
|
if value.IsZero() {
|
|
return ""
|
|
}
|
|
return value.UTC().Format(time.RFC3339Nano)
|
|
}
|
|
|
|
func (s Server) gatewayInstanceID() string {
|
|
if strings.TrimSpace(s.GatewayInstanceID) != "" {
|
|
return strings.TrimSpace(s.GatewayInstanceID)
|
|
}
|
|
return "gateway-1"
|
|
}
|
|
|
|
func (session downstreamSession) touchPresence(state string, includeSubmit bool, includeDeliver bool) {
|
|
if session.presence == nil || strings.TrimSpace(session.account) == "" {
|
|
return
|
|
}
|
|
now := time.Now().UTC()
|
|
snapshot := DownstreamPresence{
|
|
Account: strings.TrimSpace(session.account),
|
|
SrcID: strings.TrimSpace(session.srcID),
|
|
RemoteIP: strings.TrimSpace(session.remoteIP),
|
|
GatewayInstanceID: strings.TrimSpace(session.instanceID),
|
|
State: defaultString(strings.TrimSpace(state), "connected"),
|
|
ConnectedAt: session.connectedAt,
|
|
UpdatedAt: now,
|
|
}
|
|
if includeSubmit {
|
|
snapshot.LastSubmitAt = now
|
|
}
|
|
if includeDeliver {
|
|
snapshot.LastDeliverAt = now
|
|
}
|
|
_ = session.presence.TouchAccount(context.Background(), snapshot)
|
|
}
|
|
|
|
func (session downstreamSession) removePresence() error {
|
|
if session.presence == nil || strings.TrimSpace(session.account) == "" {
|
|
return nil
|
|
}
|
|
return session.presence.RemoveAccount(context.Background(), strings.TrimSpace(session.account))
|
|
}
|