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HTTP listen socket not closed in httpd_stop() leading to bind error 112 (EADDRINUSE) (IDFGH-1060) #3381

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henrix opened this issue Apr 28, 2019 · 2 comments
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HTTP listen socket not closed in httpd_stop() leading to bind error 112 (EADDRINUSE) (IDFGH-1060) #3381

henrix opened this issue Apr 28, 2019 · 2 comments

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@henrix
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henrix commented Apr 28, 2019

Hello,

I've created a web app based on the example http_server.
httpd is started and stopped via an external toggle switch.
If starting and stopping httpd without opening the website in a browser, everything is fine.
However, if I open the website (and close it again) and restart httpd, I get bind error 112 (EADDRINUSE).
It seems that the listen socket is not closed properly if the website was opened once.
SO_REUSEADDR is enabled in sdkconfig.
Is there a way to get the listen socket via httpd API to close it properly or is something else needed?

Thanks!
@github-actions github-actions bot changed the title HTTP listen socket not closed in httpd_stop() leading to bind error 112 (EADDRINUSE) HTTP listen socket not closed in httpd_stop() leading to bind error 112 (EADDRINUSE) (IDFGH-1060) Apr 28, 2019
@anurag-kar
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@henrix SO_REUSEADDR is not set on the listening socket of httpd, so you need to wait about 30 seconds before starting httpd again. Here is a patch which should make this work by calling setsockopt() on the listener socket. In the meanwhile I'll see if this can feature can be added upstream.

httpd_reuseaddr.patch.txt

@henrix
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henrix commented Apr 29, 2019

@anurag-kar Thanks a lot!

@henrix henrix closed this as completed Apr 29, 2019
igrr pushed a commit that referenced this issue May 6, 2019
@anurag-kar @espressif-bot
esp_http_server : Allow binding to same address and port upon restart…
ffad8b2 
…ing server without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes #3381
igrr pushed a commit that referenced this issue May 10, 2019
@anurag-kar
esp_http_server : Allow binding to same address and port upon restart…
0757e01 
…ing server without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes #3381
trombik pushed a commit to trombik/esp-idf that referenced this issue Aug 9, 2019
@anurag-kar @trombik
esp_http_server : Allow binding to same address and port upon restart…
2259ec5 
…ing server without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes espressif#3381
felixcollins added a commit to IntranelConsulting/esp-idf that referenced this issue Feb 12, 2020
@felixcollins
Patch to allow restarting webserver
c9eb61e 
espressif#3381
https://github.com/espressif/esp-idf/files/3127017/httpd_reuseaddr.patch.txt
@klew klew mentioned this issue Apr 1, 2022
Open
wujiangang pushed a commit to espressif/ESP8266_RTOS_SDK that referenced this issue May 6, 2023
@ustccw
feat(httpd): Allow binding to same address and port upon restarting s…
d93c5bb 
…erver without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes espressif/esp-idf#3381
wujiangang pushed a commit to espressif/ESP8266_RTOS_SDK that referenced this issue May 6, 2023
@ustccw
feat(httpd): Allow binding to same address and port upon restarting s…
0d9450e 
…erver without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes espressif/esp-idf#3381
loganfin pushed a commit to Lumenaries/esp_http_server that referenced this issue Apr 23, 2024
@anurag-kar @espressif-bot
esp_http_server : Allow binding to same address and port upon restart…
6000344 
…ing server without delay

Issue : Restarting the server without 30sec delay between httpd_stop() and httpd_start() causes EADDRINUSE error
Resolution : Use setsockopt() to enable SO_REUSEADDR on listener socket

Closes espressif/esp-idf#3381
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@henrix @anurag-kar