c# - Receiving application/octet-stream post with webapi2 -

i working on solution send xml content our api on post.

i using below code , works when xml-content delivered php-script using curl. when try same client using c#, not getting correct xml content out.

server code:

using system; using system.io; using system.net.http; using system.net.http.formatting; using system.net.http.headers; using system.text; using system.threading.tasks;  using log4net;   public class binarytextmediatypeformatter : mediatypeformatter {   /// <summary> ///     _log. /// </summary> private readonly ilog log = logmanager.getlogger(typeof(binarytextmediatypeformatter));  /// <summary> /// initializes new instance of <see cref="binarytextmediatypeformatter"/> class. /// </summary> public binarytextmediatypeformatter() {     this.supportedmediatypes.add(new mediatypeheadervalue("application/octet-stream")); }  /// <summary> /// read stream async. /// </summary> /// <param name="type"> /// type. /// </param> /// <param name="readstream"> /// read stream. /// </param> /// <param name="content"> /// content. /// </param> /// <param name="formatterlogger"> /// formatter logger. /// </param> /// <returns> /// <see cref="task"/>. /// </returns> public override task<object> readfromstreamasync(type type, stream readstream, httpcontent content, iformatterlogger formatterlogger) { var taskcompletionsource = new taskcompletionsource<object>(); try {     var memorystream = new memorystream();     readstream.copyto(memorystream);      var streamvalues = encoding.default.getstring(memorystream.toarray());      taskcompletionsource.setresult(streamvalues.trim()); } catch (exception e) {     this.log.error(e);     taskcompletionsource.setexception(e); }  return taskcompletionsource.task; }  /// <summary> /// can read type. /// </summary> /// <param name="type"> /// type. /// </param> /// <returns> /// <see cref="bool"/>. /// </returns> public override bool canreadtype(type type) {     return type == typeof(string); }  /// <summary> /// can write type. /// </summary> /// <param name="type"> /// type. /// </param> /// <returns> /// <see cref="bool"/>. /// </returns> public override bool canwritetype(type type) {     return false; } } 

client code (this 1 has 1 textbox can add xml, response-text-box print out response , send-button):

/// <summary> /// initializes new instance of <see cref="form1"/> class. /// </summary> public form1() {     this.initializecomponent(); }  /// <summary> /// btn send_ click. /// </summary> /// <param name="sender"> /// sender. /// </param> /// <param name="e"> /// e. /// </param> private void btnsendclick(object sender, eventargs e) {     try     {         var bytes = system.text.encoding.default.getbytes(this.txtcontent.text);         var postdata = getbytes(system.text.encoding.utf8.getstring(bytes));          const string uri = "http://dev.sportsdata.no/api/api/fileclient/odf";          byte[] response;          using (var client = new webclient())         {             response = client.uploaddata(uri, "post", postdata);         }          this.txtresonse.text += environment.newline;         this.txtresonse.text += @"response: " + response;     }     catch (exception exception)     {         this.txtresonse.text += environment.newline + @"starting loop" + environment.newline;         foreach (keyvaluepair<string, string> kvp in exception.data)         {             this.txtresonse.text += @"key: " + kvp.key + @", value: " + kvp.value + environment.newline;         }          this.txtresonse.text += @"ending loop" + environment.newline;         this.txtresonse.text += @"exception: " + exception.message + environment.newline + exception.stacktrace;     } }  /// <summary> /// bytes. /// </summary> /// <param name="str"> /// str. /// </param> /// <returns> /// <see cref="byte[]"/>. /// </returns> private static byte[] getbytes(string str) {     var bytes = new byte[str.length * sizeof(char)];     buffer.blockcopy(str.tochararray(), 0, bytes, 0, bytes.length);     return bytes; } 

some output log:

this content: <2016-02-08 13:35:56,673 [13] error 166ogger [(null)] [(null)] - system.xml.xmlexception: name cannot begin '.' character, hexadecimal value 0x00. line 1, position 2. @ system.xml.xmltextreaderimpl.throw(exception e) @ system.xml.xmltextreaderimpl.throw(string res, string[] args) @ system.xml.xmltextreaderimpl.parseqname(boolean isqname, int32 startoffset, int32& colonpos) @ system.xml.xmltextreaderimpl.parseelement() @ system.xml.xmltextreaderimpl.parsedocumentcontent() @ system.xml.xmltextreaderimpl.read() @ system.xml.xmlloader.load(xmldocument doc, xmlreader reader, boolean preservewhitespace) @ system.xml.xmldocument.load(xmlreader reader) @ system.xml.xmldocument.loadxml(string xml)