c# - Web Service that handles file upload works locally but not remote -

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i've written webservice in servicestack accepts file uploads. test i've used following code:

string filepath = @"c:\myfile.pdf"; string webapi = @"http://localhost:20938/upload/myfile.pdf";  httpwebrequest client = (httpwebrequest)webrequest.create(webapi); client.method = webrequestmethods.http.post; client.allowwritestreambuffering = false; client.sendchunked = true; client.contenttype = "multipart/form-data;"; client.timeout = int.maxvalue;  using (filestream filestream = file.openread(filepath)) {     filestream.copy(client.getrequeststream()); }  var response = new streamreader(client.getresponse().getresponsestream()).readtoend();

this works localhost, when deploy remote server, doesn't work. 500 internal error. (other web api calls return json data work locally , remotely).

how fix/debug this?

the code below, works me. difference, can see allowwritestreambuffering = true;

            string requesturi = path.combine(serverip + @"/upload/", filename);             httpwebrequest client = (httpwebrequest)webrequest.create(requesturi);             client.method = webrequestmethods.http.post;              client.allowwritestreambuffering = true;             client.sendchunked = true;             client.contenttype = "multipart/form-data;";             client.timeout = int.maxvalue;             using (filestream filestream = file.openread(filepath))             {                 filestream.copy(client.getrequeststream());             }             var response = new streamreader(client.getresponse().getresponsestream()).readtoend();

do have firewall, blocking port ?


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