c# - httpwebrequest gives timeout until restarted -

i working on desktop application developed in c# (.net environment).

this application connects remote server using httpwebrequest. if due reason pc disconnected internet , re-connect application gives request timeout httpwebrequest until restart whole application , if again add new thread application after network d/c works fine.

is there way reset network or can tell me how work?

//my code is..

public string request(string add, string post, int time, string reff, int id, int rwtime)     {         try         {             if (rwtime == 0)             {                 rwtime = 100000;             }             string result = "";             string location = "";             // create web request             httpwebrequest req = webrequest.create(add) httpwebrequest;             req.readwritetimeout = rwtime;             req.keepalive = true;             req.headers.add(httprequestheader.acceptencoding, "gzip,deflate");             req.accept = "application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";             req.contenttype = "application/x-www-form-urlencoded";             req.timeout = time;             req.referer = reff;             req.allowautoredirect = false;             req.cookiecontainer = statictk.cc[id];             req.preauthenticate = true;             if (post != "")             {                 req.method = "post";                 string postdata = post;                 asciiencoding encoding = new asciiencoding();                 byte[] byte1 = encoding.getbytes(postdata);                 // set content type of data being posted.                 req.contenttype = "application/x-www-form-urlencoded";                 // set content length of string being posted.                 req.contentlength = byte1.length;                 stream newstream = req.getrequeststream();                 newstream.write(byte1, 0, byte1.length);                 newstream.close();             }             else             {                 req.method = "get";             }             // response             try             {                 httpwebresponse response = req.getresponse() httpwebresponse;                  // response stream                 location = response.getresponseheader("location");                 if (location == "")                 {                     stream responsestream = response.getresponsestream();                     if (response.contentencoding.tolower().contains("gzip"))                         responsestream = new gzipstream(responsestream, compressionmode.decompress);                     else if (response.contentencoding.tolower().contains("deflate"))                         responsestream = new deflatestream(responsestream, compressionmode.decompress);                      streamreader reader = new streamreader(responsestream, encoding.default);                     // read whole contents , return string                     result = reader.readtoend();                 }                 else                 {                     result = location;                 }                 response.close();                 if (result == "") result = "retry";                 return result;             }              catch (exception e)             {                 log.store("errorinresponce", e.message);                 if (statictd.status[id] != "removed")                 {                     return "retry";                 }                 else                 {                     return "error";                 }             }         }         catch(exception f)         {             log.store("networkerrorretry", f.message);             if (f.message == "the operation has timed out")             {                 return "retry";             }             string ans = messagebox.show("there network error..wish retry ?\nerror msg : "+ f.message, "title", messageboxbuttons.yesno).tostring();             if (ans == "yes")                 return "retry";             else             {                 invoketk.settxt(id, "not ready");                 return "error";             }         }     } 

it sounds application missing error handling. disconnect can happen @ time , application should able handle it. try surround network loop try-catch statement, , catch different kinds of exceptions. depending on exception thrown, can decide if reconnect server silently or if want generate error message.