[HTTPCLIENT-2245] Content-Length is missing for HTTP/2

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.1.3, 5.2-beta1
• Component/s: HttpClient (async)
• Environment: macOS, JDK 17 ; ; openjdk version "17" 2021-09-14 ; OpenJDK Runtime Environment Temurin-17+35 (build 17+35) ; OpenJDK 64-Bit Server VM Temurin-17+35 (build 17+35, mixed mode, sharing)
• Assignee: Unassigned
• Reporter: Yubao Liu
• Created: 10/Nov/22 10:34
• Updated: 10/Nov/22 16:57
• Resolved: 10/Nov/22 15:23

Description

import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.client5.http.impl.async.HttpAsyncClientBuilder;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http2.HttpVersionPolicy;

public class A {
    public static void main(String[] args) throws Exception {
        CloseableHttpAsyncClient httpClient = HttpAsyncClientBuilder.create().useSystemProperties()
            .setVersionPolicy(HttpVersionPolicy.FORCE_HTTP_2)
            .build();

        httpClient.start();

        SimpleHttpRequest request = SimpleRequestBuilder.post("https://httpbin.org/anything")
            .setBody("{\"msg\": \"hello\"}".getBytes(), ContentType.APPLICATION_JSON)
            .build();

        SimpleHttpResponse response = httpClient.execute(request, null).get();
        System.out.println(response.getBodyText());
    }
}

According to the response, HttpClient doesn't set content-length automatically:

{
  "args": {}, 
  "data": "{\"msg\": \"hello\"}", 
  "files": {}, 
  "form": {}, 
  "headers": {
    "Content-Type": "application/json; charset=UTF-8", 
    "Host": "httpbin.org", 
    "Transfer-Encoding": "chunked", 
    "User-Agent": "Apache-HttpAsyncClient/5.2-beta1 (Java/17)", 
    "X-Amzn-Trace-Id": "Root=1-636cd35b-506ee990624aebd74fce87b9"
  }, 
  "json": {
    "msg": "hello"
  }, 
  "method": "POST", 
  "origin": "114.246.97.66", 
  "url": "https://httpbin.org/anything"
}