c# - How to return the Task<T> from HttpResponseMessage.Content.ReadAsStringAsync().ContinueWith() method? -

i trying get/post using httpclient class , facing following issues

1. do not know how return task httpresponsemessage.content.readasstringasync().continuewith() method.

2. for reason, keep on cancelling automatically

       private static task<t> httpclientsendasync<t>(string url, object data, httpmethod method, string contenttype, cancellationtoken token) {     httprequestmessage httprequestmessage = new httprequestmessage(method, url);     retrydelegatinghandler retrydelegatinghandler = new retrydelegatinghandler();     retrydelegatinghandler.preauthenticate = true;     retrydelegatinghandler.credentials = credential;     retrydelegatinghandler.proxy = null;      httpclient httpclient = new httpclient(retrydelegatinghandler);     httpclient.timeout = new timespan(constants.timeout);      if (data != null)     {         byte[] bytearray = encoding.ascii.getbytes(helper.tojson(data));         memorystream memorystream = new memorystream(bytearray);         httprequestmessage.content = new stringcontent(new streamreader(memorystream).readtoend(), encoding.utf8, contenttype);     }      task<httpresponsemessage> httpresponsemessage = httpclient.sendasync(httprequestmessage);     httpresponsemessage.continuewith((task) =>         {             if (!task.isfaulted)             {                 httpresponsemessage response = task.result;                 response.content.readasstringasync().continuewith(                 (stringtask) =>                 {                     if (!stringtask.isfaulted)                     {                         return helper.fromjson<t>(stringtask.result);                     }                     else                     {                         logger.log(string.format("sendasyncrequest task isfaulted: {0} \nexception: {1}", typeof(t), task.exception));                         updateerror(typeof(t).tostring());                          return default(t);                     }                 });             }             else             {                 logger.log(string.format("sendasyncrequest task isfaulted: {0} \nexception: {1}", typeof(t), task.exception));                 updateerror(typeof(t).tostring());                  return default(t);             }         }); } 

update: work still not work while trying handle fault.

    return httpclient.sendasync(httprequestmessage).continuewith(task =>     {         var response = task.result;         return response.content.readasstringasync().continuewith(stringtask =>         {             var json = stringtask.result;             return helper.fromjson<t>(json);         });     }).unwrap(); 

task.continuewith returns continuation task: task or task<t>. if i'm understanding question, in case here this:

var continuation = httpresponsemessage.continuewith((task) =>     {         if (!task.isfaulted)         {             httpresponsemessage response = task.result;             return response.content.readasstringasync().continuewith(             (stringtask) =>             {              ... 

and continuation end being task<task<t>> can call .unwrap() on turn proxy task task<t>.