使用aliyun软件包通过esp32,at_device连接服务器连接不上

发布于 2023-11-14 12:21:51 浏览：584 订阅该版

通信使用的是esp32,at_device包，单独ping服务器没问题，在使用ali_mqtt_sample例程连接服务器的过程中，出现连接不上的情况。日志如下:
```
msh />ping www.baidu.com
32 bytes from 0.0.0.0 icmp_seq=0 time=398 ms
32 bytes from 0.0.0.0 icmp_seq=1 time=203 ms
32 bytes from 0.0.0.0 icmp_seq=2 time=200 ms
32 bytes from 0.0.0.0 icmp_seq=3 time=200 ms
msh />ping gt1ddy56nty.iot-as-mqtt.cn-shanghai.aliyuncs.com
32 bytes from 0.0.0.0 icmp_seq=0 time=233 ms
32 bytes from 0.0.0.0 icmp_seq=1 time=193 ms
32 bytes from 0.0.0.0 icmp_seq=2 time=194 ms
32 bytes from 0.0.0.0 icmp_seq=3 time=195 ms
msh />ali_mqtt_sample
mqtt_example_main|135 :: mqtt example
host name:gt1ddy56nty.iot-as-mqtt.cn-shanghai.aliyuncs.com
[W/at.clnt] execute command (AT+CIPSTART=0,"TCP","0.0.0.0",1883,60) timeout (5000 ticks)!
[D/at.skt.esp32] esp32 device socket (0) connect failed, the socket was not be closed and now will connect retry.
[D/at.dev.esp32] system is processing a commands...
[W/at.clnt] execute command (AT+CIPCLOSE=0) timeout (300 ticks)!
[D/at.dev.esp32] system is processing a commands...
[W/at.clnt] execute command (AT+CIPCLOSE=0) timeout (300 ticks)!
```