dio https connect can not keep Alive? about dio

[DevaLee]

每发一次请求，Client Address的端口值都会变。
我使用 iOS原生网络请求框架 Alamofire进行网络请求时，Client Address的端口值不会变，HTTPS连接会进行持久连接，Kept Alive 值为true，TLS HandShake 值为 -

能帮我看一下，在dio中如何能 保持持久连接么？每次请求不需要重新进行 TLS 握手。

[hc79879]

I also encountered the same problem

[OnClickListener2048]

same here

[zombiu]

how to fix

[shaopx]

is this a new issue?

[shaopx]

I solve this by the following code:
HttpClient createMyHttpClient() {
return HttpClient()..idleTimeout = const Duration(seconds: 300);
}
_dio.httpClientAdapter =
IOHttpClientAdapter(createHttpClient: createMyHttpClient);

[OnClickListener2048]

I solve this by the following code: HttpClient createMyHttpClient() { return HttpClient()..idleTimeout = const Duration(seconds: 300); } _dio.httpClientAdapter = IOHttpClientAdapter(createHttpClient: createMyHttpClient);

thanks, but i don't know if it really works, how can i test it ?

[shaopx]

I solve this by the following code: HttpClient createMyHttpClient() { return HttpClient()..idleTimeout = const Duration(seconds: 300); } _dio.httpClientAdapter = IOHttpClientAdapter(createHttpClient: createMyHttpClient);

thanks, but i don't know if it really works, how can i test it ?

use flutter devtools --> network tab, check the connection establish time.

[AlexV525]

idleTimeout corresponds to the alive time of the client. If your client got released in a short time, please consider increasing the configuration. It's also recommended to test with the dart:io:HttpClient and package:http.

[zerg000000]

This is why keep-alive not working. The default idleTimeout for underlying package:http is 15 seconds. However, don't know why dio set it to 3 seconds. According to package:http documentation. The non-active connection in pool will be closed by min(idleTimeout, keep-alive timeout).

dio/dio/lib/src/adapters/io_adapter.dart

Line 242 in cca8439

final client = HttpClient()..idleTimeout = Duration(seconds: 3);

[zerg000000]

Dio 10 requests with no sleep in between

Dio 10 requests with 4s sleep in between

dart:http 10 requests with 4s sleep in between

[kuhnroyal]

The HttpClient.idleTimeout of 3 seconds has already been removed on the 6.0.0 branch. The behavior will not be changed for 5.x since this is in some ways a breaking change.

[AlexV525]

In order to get rid of the default 3 seconds timeout, either create a new HttpClient with a new timeout using createHttpClient or set the timeout using onHttpClientCreate (deprecated).