Questions:
I am consuming HTTP GET/POST request in an Android Applicaton, Its doing well(Request And response) however when i refer to wireshark LOG there is [FIN, ACK] is coming, is it means my connection is closing or what?
My requirement is to make the connection persistent. So my question is why FIN/ACK is coming and if it is closing the connection then where i am leaving?
WireShark LOG and Request/Response content are below:
For GET/POST:
Request:
GET /api/application/addparam HTTP/1.1
Content-Type: application/json; charset=utf-8
User-Agent: okhttp/2.5.0
Authorization: Basic QURJOg==
Host: 10.92.33.190:8080
Connection: Keep-Alive
Response:
HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Accept-Language: en-us
Accept-Encoding: gzip, deflate
Content-Length: 558
Date: Fri, 18 May 2018 13:11:46 GMT
Connection: keep-alive
{
//JSON Here
}
WireShark LOG:
692 28.537182 10.92.33.134 10.92.33.190 HTTP 329 POST /api/application/AddParam HTTP/1.1 (application/json)
693 28.541340 10.92.33.190 10.92.33.134 HTTP 345 HTTP/1.1 200 OK (application/json)
704 29.194478 10.92.33.190 10.92.33.134 TCP 66 8080 → 47074 [FIN, ACK] Seq=289 Ack=334 Win=66048 Len=0 TSval=285850628 TSecr=19045098
709 29.393729 10.92.33.134 10.92.33.190 TCP 66 47074 → 8080 [ACK] Seq=334 Ack=290 Win=88832 Len=0 TSval=19045619 TSecr=285850628
852 33.544459 10.92.33.190 10.92.33.134 TCP 66 8080 → 45502 [FIN, ACK] Seq=280 Ack=264 Win=66304 Len=0 TSval=285854978 TSecr=19045534
855 33.583848 10.92.33.134 10.92.33.190 TCP 66 45502 → 8080 [ACK] Seq=264 Ack=281 Win=88832 Len=0 TSval=19046038 TSecr=285854978
Android code:
JSONObject responseString = null;
String responseBody = "";
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(URL);
try {
httpPost.setHeader(HTTP.CONTENT_TYPE,"application/json; charset=utf-8");
httpPost.setHeader(HTTP.USER_AGENT,"okhttp/2.5.0");
httpPost.setHeader("Authorization", "Basic QURJOg==");
httpPost.setHeader("Connection", "Keep-Alive");
StringEntity output = new StringEntity(jsonObj.toString());
httpPost.setEntity(output);
} catch (Exception e) {
}
try {
ResponseHandler<String> responseHandler = new BasicResponseHandler();
responseBody = httpclient.execute(httpPost, responseHandler);
responseString = new JSONObject(responseBody);
} catch (Exception e) {
}
return responseString;
}
Answers:
