batch message format of code is error

批量消息体格式异常：SOH ，STX

{
{"a":1,"uKey":"DeviceLogEvent","deviceModelId":"1036598151955419136","commonEventClass":"","level":"","eventType":"DeviceLogEvent","serverIp":"10.42.33.107","driverId":"1036598288685535232","enterpriseId":"715155051637899264","date":"2022-11-27 10:20:49.394"}bKEYS
gatewayUID:undefinedTAGS
DeviceLogEventUNIQ_KEY
0A2A216B00081BCD450B881DB9740000WAIT
true
{
{"b":2,"uKey":"DeviceLogEvent","deviceModelId":"1036598151955419136","commonEventClass":"","level":"","eventType":"DeviceLogEvent","serverIp":"10.42.33.107","driverId":"1036598288685535232","enterpriseId":"715155051637899264","date":"2022-11-27 10:20:49.394"}bKEYS
gatewayUID:undefinedTAGS
DeviceLogEventUNIQ_KEY
0A2A216B00081BCD450B881DB9740001WAIT
true


Start by reproducing the reported batch payload containing SOH and STX control characters, using the message data and image attached to this issue. Trace the C++ client’s batch-message formatting path and compare the generated bytes with the expected RocketMQ batch format. Done means the batch payload format is identified and corrected, with a regression test covering the reported data.

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