session - Java okHttp reuse keep-alive connection -

how reuse http keep-alive connection via okhttp?

my code sample:

public class mainwithokhttp {      static okhttpclient _client = new okhttpclient();      public static void main(string[] args) {         ...         query1();         ...         // in request         request _request = new request.builder()             .url("...")             .addheader("connection", "keep-alive")             .addheader("cookie", _cookie)             .post(postparams)             .build();         // in request previous session closed, why?         // previous session = session created in query1 method         response _response = _client.newcall(_request).execute();         ...     }      ...     private static void query1() {         ...         request request = new request.builder()             .url("...")             .addheader("connection", "keep-alive")             .addheader("cookie", _cookie)             .get()             .build();         response _response = _client.newcall(request).execute();         ...     }     ...  } 

so, i'm calling query1() method. in method connection opened, session in server side created , cookie sessionid received.

but, when i'm performing query server - previous connection not used , session on server closed. session life time in server not small, problem not in life time.

ps: i'm getting captcha server , recognizing captcha code, performing query captcha code server. captcha in server side not recognized, because session closed , captcha code stored in session.

eventually, following code working me:

public class main {    static okhttpclient _client = new okhttpclient();    public static void main(string[] args) throws ioexception {       performquery();   }    private static void performquery() throws ioexception {       request firstrequest = new request.builder()             .url("http://localhost/test/index.php")             .get()             .build();       response firstresponse = _client.newcall(firstrequest).execute();        request.builder requestbuilder = new request.builder()             .url("http://localhost/test/index.php");        headers headers = firstresponse.headers();        requestbuilder = requestbuilder.addheader("cookie", headers.get("set-cookie"));        request secondrequest = requestbuilder.get().build();       response secondresponse = _client.newcall(secondrequest).execute();   } } 

it seems, problem _cookie object.