fix: close receipt delivery workflows

gateway/internal/inbound/protocol_log_test.go

@@ -4,8 +4,11 @@ import (
 	"encoding/json"
 	"net/http"
 	"net/http/httptest"
+	"sync"
 	"testing"
 	"time"
+
+	cmpp "github.com/bigwhite/gocmpp"
 )
 
 func TestSubmitResponseProtocolLoggerEmitsActualPacketDirection(t *testing.T) {
@@ -50,3 +53,38 @@ func TestSubmitResponseProtocolLoggerEmitsActualPacketDirection(t *testing.T) {
 		t.Fatal("timed out waiting for protocol event")
 	}
 }
+
+func TestDownstreamDeliverProtocolLoggerEmitsReceiptPacket(t *testing.T) {
+	events := make(chan protocolLogEvent, 1)
+	session := &downstreamSession{
+		account: "607532", tenantID: "tenant-1", applicationID: "app-1",
+		messageID: "MSG-LONG-1", phoneNumber: "18821203795", mu: &sync.Mutex{},
+		protocolLog: func(event protocolLogEvent) { events <- event },
+	}
+	session.recordDownstreamProtocol(
+		&cmpp.Cmpp2DeliverReqPkt{
+			MsgId: 736078096490905600, SrcTerminalId: "18821203795", RegisterDelivery: 1,
+		},
+		"delivery-1",
+		71,
+		736078096490905600,
+		"success",
+		"",
+		nil,
+	)
+
+	select {
+	case event := <-events:
+		if event.Protocol != "cmpp" || event.Direction != "platform_to_client" || event.EventType != "deliver_receipt" {
+			t.Fatalf("unexpected protocol event: %+v", event)
+		}
+		if event.TenantID != "tenant-1" || event.ApplicationID != "app-1" || event.Account != "607532" {
+			t.Fatalf("unexpected application identifiers: %+v", event)
+		}
+		if event.MessageID != "MSG-LONG-1" || event.GatewayMessageID != "736078096490905600" || event.Phone != "18821203795" {
+			t.Fatalf("unexpected message identifiers: %+v", event)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("timed out waiting for downstream deliver protocol event")
+	}
+}