[Bug]: xhttp mode: auto not working in v25.3.6

[Pouryjoon]

when i updated to latest v2rayng and v2rayN with latest xray ( v25.3.6 ) xhttp mode : auto doesnt work any more and should select manualy to what it is ( for exmaple packet-up ).
it was working fine in xray V25.1.1

2dust/v2rayN#6897

[RPRX]

#4518 (comment)

[RPRX]

不对，又看了一眼，你的问题应该是整个链路不兼容 stream-one 导致不兼容 auto 的 stream-up

[RPRX]

比如说新版 stream-up 要求 Nginx 必须用 grpc_pass，不能是 proxy_pass

[Pouryjoon]

No, I took another look and your problem should be that the entire link is incompatible with stream-one, which leads to incompatibility with auto's stream-up.

do you mean it may not work after upgrade server side ?
i forgot to say my server side is v25.1.30 , my mistake , before update clients it was working with packet-up and stream-up only (and of course auto) with alpn h2 h3 ( xhttp-tls-bunnyCDN ) now just works with packet-up , i thought auto selects between 3 modes now i know when the client mode is set to "auto", it will select between "stream-one" and "stream-up", i will test with upgraded server side.

[RPRX]

@Pouryjoon "auto" 会选择最广泛适用的模式，详见 #4113 中的解释

我不确定你提到的 bunnyCDN 是否有设置能兼容 stream-one，但是如果你只需要恢复 stream-up 到以前的状态，可以在服务端设置 "scStreamUpServerSecs": -1，详见 #4113 中的解释

[RPRX]

In addition，packet-up 的表现经我几轮优化后已经不输 stream-up 了，没什么不好的，只是会自动切换上行连接，主要防请求数超限

[Pouryjoon]

In addition, after several rounds of optimization, the performance of packet-up is no longer inferior to stream-up. There is nothing wrong with it. It just automatically switches to the upstream connection to prevent the number of requests from exceeding the limit.

yes i noticed that packet-up is fast as enough, thanks for fast reply 💯