c# - The same code works using HttpWebRequest but not using HttpRequestMessage -

i've created httpclient i'm using sending requests:

public static void initialize() {     handler = new httpclienthandler() { usecookies = false, allowautoredirect = true };     http = new httpclient(handler) { baseaddress = new uri("http://csgolounge.com/mytrades") };     http.defaultrequestheaders.add("user-agent", "mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, gecko) chrome/42.0.2311.135 safari/537.36"); } 

after i'm creating instance of custom class stores cookies string account (something id=xxxxxxxx; tkz=xxxxxxxxxx; token=xxxxxxxxxxx.

that's how i'm sending post request:

public async task bump() {     //if (bumpable)     //{     var req = new httprequestmessage(httpmethod.post, "http://www.csgolounge.com/ajax/bumptrade.php");     req.headers.add("cookie", cookiestring);     req.headers.add("x-requested-with", "xmlhttprequest");     req.headers.add("referer", "http://csgolounge.com/mytrades"); //not sure if i've run out of smart ideas long time ago      /*dictionary<string, string> postdata = new dictionary<string, string>()     {         {"trade", offer_id}     };     var encoded = new formurlencodedcontent(postdata);     */     req.content = new stringcontent("&trade="+offer_id, encoding.utf8, "application/x-www-form-urlencoded"); //desperation.. decided change encoded dictionary stringcontent     var res = await steamaccount.http.sendasync(req);     var html = await res.content.readasstringasync();     //} } 

i don't what's wrong code. seems correct me.

also, when set allowautoredirect = false returns 301: moved permanently error, while returns 200 no html no matter pass content.

what doing wrong?

edit: here's javascript function i'm basing request on:

function bumptrade(trade) {     $.ajax({         type: "post",         url: "ajax/bumptrade.php",         data: "trade=" + trade     }); } 

i've worked more complex ajax before, doesn't seem work no matter do.

edit: i've lost patience , switched httpwebrequest instead.

now method looks this:

public async task bumplegacy() {     while (true)     {         try         {             httpwebrequest httpwebrequest = (httpwebrequest)webrequest.create("http://csgolounge.com/ajax/bumptrade.php");             var cc = new cookiecontainer();             matchcollection mc = regex.matches(account.cookiestring, @"\s?([^=]+)=([^;]+);");             foreach (match m in mc)                 cc.add(new cookie(m.groups[1].value, m.groups[2].value, "/", "csgolounge.com"));             httpwebrequest.cookiecontainer = cc;             byte[] bytes = encoding.ascii.getbytes("trade=" + offer_id);             httpwebrequest.referer = "http://csgolounge.com/mytrades";             httpwebrequest.headers.add("x-requested-with", "xmlhttprequest");             httpwebrequest.method = "post";             httpwebrequest.contenttype = "application/x-www-form-urlencoded; charset=utf-8";             httpwebrequest.useragent = "mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, gecko) chrome/42.0.2311.135 safari/537.36";             httpwebrequest.contentlength = (long)bytes.length;             var g = await httpwebrequest.getrequeststreamasync();             await g.writeasync(bytes, 0, bytes.count());             g.close();             var res = await httpwebrequest.getresponseasync();             res.close();             break;         }         catch         {         }     } } 

maybe i'm dumb me doesn't seem different. there key differences can cause?

here code 1 of working systems submits post request through httpclient.

[route("resource")] public async task<dynamic> createresource([frombody]resource resource) {     if (resource == null) return badrequest();     dynamic response = null;     resource.topic = getdatafromsomewhereelse();     var message = new postmessage(resource).bodycontent;      dynamic postrequest = new     {         message = message     };     var post = jsonconvert.serializeobject(postrequest);      httpcontent content = new stringcontent(post, encoding.utf8, "application/json");      using (var client = new httpclient())     {         client.timeout = timespan.fromminutes(1);         client.defaultrequestheaders.accept.clear();         client.defaultrequestheaders.accept.add(new system.net.http.headers.mediatypewithqualityheadervalue("application/json"));          try         {             client.baseaddress = @"http://localhost:51145/";               httpresponsemessage postresponse = await client.postasync("resource", content); //"resource" route exposed on remote host              string json = await postresponse.content.readasstringasync();              if (postresponse.statuscode == httpstatuscode.badrequest) return badrequest();             if (postresponse.statuscode == httpstatuscode.internalservererror) return internalservererror();             if (postresponse.statuscode == httpstatuscode.notfound) return notfound();              return json;         }         catch(exception ex)         {             return internalservererror(ex);         }     } } 

[edit] "postmessage" modified remove domain-specific details. here how bodycontent defined inside real "postmessage" solution, provide enough context understand "message" , how works sample.

public string bodycontent     {                 {             string content = "";              type type = this.gettype();             assembly assembly = assembly.getexecutingassembly();             string resource = string.format("{0}.{1}", type.namespace, this.embeddedresourcename);             stream stream = assembly.getmanifestresourcestream(resource);             streamreader reader = new streamreader(stream);             content = reader.readtoend();              return content;         }     } 

...and here postrequest (again, domain-specific details trimmed)

public class postrequest {    public string message { get;set; } }