java - Can not receive a response from a remote server -

i trying write code allow me connect remote server , receive response it. remote address : www.euref-ip.net:2101

when trying connect web page works fine. when trying connect through java code cant response back. here code far:

public class client implements runnable{ private string nserver = ""; private int nport = 0;  public client(string server, int port){     this.nserver = server;     this.nport = port; }  @override public void run() {     try {         socketaddress sockaddr = new inetsocketaddress(nserver, nport);         socket s = new socket();         s.connect(sockaddr, 10 * 1000);         if (s.isconnected()) {             s.setsotimeout(20 * 1000);             dataoutputstream out = new dataoutputstream (s.getoutputstream());             datainputstream in = new datainputstream (s.getinputstream());             while (true) {                 // send message server                 string requestmsg = "get / http/1.0\r\n";                 requestmsg += "user-agent: client v1\r\n";                 requestmsg += "accept: */* \r\n";                 requestmsg += "connection: keep alive\r\n";                 out.write(requestmsg.getbytes());                 out.flush();                  // receive response                  int ln = in.available();                 byte [] bytes  = new byte [ln];                 in.read(bytes);                 system.out.println(new string(bytes) + "\n");                 thread.sleep(2000);             }         }     }      catch (unknownhostexception ex) {system.out.println(ex);}      catch (ioexception ex) {system.out.println(ex);}      catch (interruptedexception ex) {system.out.println(ex);} }} 

right ln variable 0 , reading empty response. doing wrong? suggestions? appreciated.

your http request incomplete, need add empty line @ end indicating end of header section here end of request.

try this:

string requestmsg = "get / http/1.0\r\n"; ... requestmsg += "connection: keep alive\r\n"; requestmsg += "\r\n";