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From Mahesh Mattepu <Mahesh.Matt...@igindex.co.uk>
Subject SocketException in HttpClient GET
Date Mon, 14 Feb 2011 11:00:24 GMT
Hi,

We are trying to solve a very simple problem for *HttpClient4* -- SocketException for HTTP
GET. HttpClient4 gets the first "chunk" of data from server (Tomcat-6.0.18) and then the server
unexpectedly closes the connection.

We tried the following HttpClient4 versions to fix this but it did not work!
- 4.1-beta1
- 4.1-alpha2
- 4.1-alpha1
- 4.0.3
- 4.0.2
- 4.0.1
The same piece of code works with HttpClient3.

Do you know if HTTP GET has any known bugs for HttpClient4? We could not find any on the internet.

The debug logs report the following:
Sending request: GET /layouts/xxxxx?websiteId=xxx&userId=xxxxx HTTP/1.1 org.apache.http.wire
- >> "GET /layouts/xxxxx?websiteId=xxx&userId=xxxxx HTTP/1.1[EOL]"
org.apache.http.wire - >> "Accept: application/json[EOL]"
org.apache.http.wire - >> "Host: xxx-xxxx.xxxxxxx.xxxxx[EOL]"
[note]
org.apache.http.wire - >> "Connection: Keep-Alive[EOL]"
org.apache.http.wire - >> "[EOL]"
org.apache.http.headers - >> GET /layouts/xxxxx?websiteId=xxx&userId=xxxxx HTTP/1.1
org.apache.http.headers - >> Accept: application/json org.apache.http.headers - >>
Host: xxx-xxxx.xxxxxxx.xxxxx [note] org.apache.http.headers - >> Connection: Keep-Alive
org.apache.http.wire - << "HTTP/1.1 200 OK[EOL]"
org.apache.http.wire - << "Date: Wed, 09 Feb 2011 09:53:15 GMT[EOL]"
org.apache.http.wire - << "Server: Apache-Coyote/1.1[EOL]"
org.apache.http.wire - << "Cache-Control: public, max-age=31536000000[EOL]"
org.apache.http.wire - << "Expires: Thu, 09 Feb 2012 09:53:15 GMT[EOL]"
org.apache.http.wire - << "Content-Type: application/json;charset=utf-8[EOL]"
org.apache.http.wire - << "Content-Language: en-GB[EOL]"
org.apache.http.wire - << "Content-Length: 7506[EOL]"
[note]
org.apache.http.wire - << "Connection: close[EOL]"
org.apache.http.wire - << "[EOL]"
org.apache.http.impl.conn.DefaultClientConnection - Receiving response: HTTP/1.1 200 OK org.apache.http.headers
- << HTTP/1.1 200 OK org.apache.http.headers - << Date: Wed, 09 Feb 2011 09:53:15
GMT org.apache.http.headers - << Server: Apache-Coyote/1.1 org.apache.http.headers -
<< Cache-Control: public, max-age=31536000000 org.apache.http.headers - << Expires:
Thu, 09 Feb 2012 09:53:15 GMT org.apache.http.headers - << Content-Type: application/json;charset=utf-8
org.apache.http.headers - << Content-Language: en-GB org.apache.http.headers - <<
Content-Length: 7506 [note] org.apache.http.headers - << Connection: close uk.co.igindex.springrest.client.RequestProxyImpl
- Http call return status code=200 [note] org.apache.http.impl.conn.DefaultClientConnection
- Connection shut down org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager - Released
connection is not reusable.
org.apache.http.impl.conn.tsccm.ConnPoolByRoute - Releasing connection [HttpRoute[{}->http://xxx-xxx.xxx.xxxxx]][null]
StopsServer:2011-02-09 09:53:15,616 [main] DEBUG org.apache.http.impl.conn.tsccm.ConnPoolByRoute
- Notifying no-one, there are no waiting threads
Content-length: 7506
org.apache.http.wire - << "{"
org.apache.http.wire - << """
org.apache.http.wire - << "i"
...
[logs removed for partial response content]
---

We are reading the response in the standard way:
StringBuilder sb = new StringBuilder();
try {
   BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
   char[] buf = new char[4 * 1024]; // 4Kchar buffer
   int len;
   while ((len = br.read(buf, 0, buf.length)) != -1) {
      sb.append(buf, 0, len);
   }
   br.close();
   } finally {
      ...
   }
---

Thanks & Regards
Mahesh


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