ESP32 Forum

SharKCS11 wrote: ↑

Mon Nov 19, 2018 10:54 pm

Hi all,
I'm using esp_http_client to make requests to a server. However, when the server is down, the http request is blocking the rest of the task for a very long time.
I want to make it so that if the server is offline and the client can't post, it should immediately stop. Is this possible to do? I tried to change this using the "timeout_ms" parameter in the configuration struct as below:

Code: Select all

esp_http_client_config_t post_config = {
	.url = ip_url,
	.event_handler = post_handler,
	.timeout_ms = 50,
};
post_client = esp_http_client_init(&post_config)

The code to use client just sets the post data and calls

Code: Select all

 esp_http_client_perform(post_client)

as normal.
After this change, the client still attempts the connection for too long. I thought setting ".timeout_ms" would make the client stop blocking after 50ms, but perhaps I misunderstood. Any way to make this happen?
Thanks!

SharKCS11 wrote: ↑

Sat Feb 23, 2019 9:06 pm

The issue was never resolved. I had to try HTTP posting to the server, and if it failed twice, then I just deemed the server dead for the remainder of the application's lifetime.
Not ideal at all, but was good enough for my purpose. I hope it gets resolved!

guillep2k wrote: ↑

Fri Feb 22, 2019 11:58 pm

Have you tried using a separate FreeRTOS task for the request? Check the xTaskCreate() function, and use semaphores to coordinate the tasks. YouTube is your friend!