ESP8266 Developer Zone

Re: TCP SYN generated by AT+CIPSTART times out too fast

2015-08-11T21:28:44+08:00

Is this issue fixed in sdk 1.3.0?

Statistics: Posted by hhc — Tue Aug 11, 2015 9:28 pm

Re: TCP SYN generated by AT+CIPSTART times out too fast

2015-07-27T18:02:33+08:00

Sometimes retrying will work. Sometimes will fail. Depends how congested network is. So to be reliable, timeout period needs to be increased.

Statistics: Posted by hhc — Mon Jul 27, 2015 6:02 pm

Re: TCP SYN generated by AT+CIPSTART times out too fast

2015-07-24T11:23:13+08:00

Hi，

Thanks for your advice !

We will think over it and let you know if there is any update.

You can try to call “AT+CIPSTART” again，if the first connection broke. Could it work ?

Statistics: Posted by ESP_Faye — Fri Jul 24, 2015 11:23 am

TCP SYN generated by AT+CIPSTART times out too fast

2015-07-22T14:44:35+08:00

Hi,

We are having issue where AT+CIPSTART timesouts too fast. Log as below.

AT+CIPSTART=0,"TCP","xxx.xxx.xxx.xxx",8888

ERROR
0,CLOSED

The duration between "ERROR" and "AT+CIPSTART" is only around 1.5 second which is too short for TCP SYN to get acknowledge if the destination server is not located in same Wifi network. e.g. located on the other side of the world connected through a congested network. Is it possible to increase the timeout to at least 30 seconds.

Version info as below.

AT+GMR
AT version:0.30.0.0(Jul 3 2015 19:35:49)
SDK version:1.2.0
compile time:Jul 20 2015 18:15:27
OK

Regards,
Hew

Statistics: Posted by hhc — Wed Jul 22, 2015 2:44 pm