unexpected content-length found, canceling

[baoyachi]

Rust code:

use axum::body::Body;
use axum::extract::{Request, State};
use axum::response::{IntoResponse, Response};
use axum::Router;
use axum::routing::MethodFilter;
use http::{HeaderMap, Version};
use serde_json::json;
use axum::routing::on;

async fn handler(mut req: Request) -> Response {
    let json = json!({
        "code":-1,
    });
    let mut resp_builder = Response::builder()
        .status(200)
        .version(Version::HTTP_11)
        .header("Transfer-Encoding", "chunked")
        .header("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate")
        .header("Connection", "keep-alive")
        .header("Content-Type", "application/json;charset=UTF-8");
    resp_builder.body(Body::from(serde_json::to_vec(&json).unwrap())).unwrap()
}

#[tokio::main]
async fn main() {
    let app = Router::new()
        .route("/*key", on(MethodFilter::all(), handler));

    let listener = tokio::net::TcpListener::bind("127.0.0.1:3000")
        .await
        .unwrap();

    axum::serve(listener, app).await.unwrap();
}

when exec curl code,casued error:

2023-05-08 20:35:05.856549000 [DEBUG] <hyper::proto::h1::conn:283>:read eof
2023-05-08 20:35:05.856983000 [DEBUG] <hyper::proto::h1::io:203>:parsed 6 headers
2023-05-08 20:35:05.857218000 [DEBUG] <hyper::proto::h1::conn:224>:incoming body is empty
2023-05-08 20:35:05.857610000 [WARN] <hyper::proto::h1::role:669>:unexpected content-length found, canceling

the detail curl code :

~ curl -v  --location '127.0.0.1:3000/register' \
--header 'Content-Type: application/json' \
--data-raw '{
    "email": "[email protected]",
    "name": "test_21",
    "token": "496ssa12314310",
    "url": "https://demo.com"
}'

[davidpdrsn]

Don't set .header("Transfer-Encoding", "chunked"). Hyper will set that for you if you respond with a stream or a body that doesn't have a known size.

[baoyachi]

Don't set .header("Transfer-Encoding", "chunked"). Hyper will set that for you if you respond with a stream or a body that doesn't have a known size.

@davidpdrsn Because now I want to use axum as the proxy layer, the header("Transfer-Encoding", "chunked") set by the upstream service, and the response header of the service has been fixed and cannot be changed, resulting in this error when the proxy layer is responding.