fix: log cmpp packet decode failures

gateway/third_party/gocmpp/receipt.go

@@ -0,0 +1,70 @@
+// Copyright 2015 Tony Bai.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmpp
+
+import "encoding/binary"
+
+// Packet length const for cmpp receipt packet.
+const (
+	CmppReceiptPktLen uint32 = 60 //60d, 0x3c
+)
+
+type CmppReceiptPkt struct {
+	MsgId          uint64
+	Stat           string
+	SubmitTime     string // YYMMDDHHMM
+	DoneTime       string // YYMMDDHHMM
+	DestTerminalId string
+	SmscSequence   uint32
+}
+
+// Pack packs the CmppReceiptPkt to bytes stream for client side.
+func (p *CmppReceiptPkt) Pack() ([]byte, error) {
+	var pktLen uint32 = CmppReceiptPktLen
+
+	var w = newPacketWriter(pktLen)
+
+	w.WriteInt(binary.BigEndian, p.MsgId)
+	w.WriteFixedSizeString(p.Stat, 7)
+	w.WriteFixedSizeString(p.SubmitTime, 10)
+	w.WriteFixedSizeString(p.DoneTime, 10)
+	w.WriteFixedSizeString(p.DestTerminalId, 21)
+	w.WriteInt(binary.BigEndian, p.SmscSequence)
+
+	return w.Bytes()
+}
+
+// Unpack unpack the binary byte stream to a CmppReceiptPkt variable.
+// After unpack, you will get all value of fields in
+// CmppReceiptPkt struct.
+func (p *CmppReceiptPkt) Unpack(data []byte) error {
+	var r = newPacketReader(data)
+
+	r.ReadInt(binary.BigEndian, &p.MsgId)
+
+	stat := r.ReadCString(7)
+	p.Stat = string(stat)
+
+	submitTime := r.ReadCString(10)
+	p.SubmitTime = string(submitTime)
+
+	doneTime := r.ReadCString(10)
+	p.DoneTime = string(doneTime)
+
+	destTerminalId := r.ReadCString(21)
+	p.DestTerminalId = string(destTerminalId)
+
+	r.ReadInt(binary.BigEndian, &p.SmscSequence)
+	return r.Error()
+}