c# - DotNetOpenAuth OAuth2 for Basecamp API -

i'm having difficulties getting oauth2 working basecamp api dotnetopenauth, here's have far, asp.net mvc 4 web app.

public actionresult basecamp() {     var server = new dotnetopenauth.oauth2.authorizationserverdescription();     server.authorizationendpoint = new uri("https://launchpad.37signals.com/authorization/new");     server.tokenendpoint = new uri("https://launchpad.37signals.com/authorization/token");      var client = new dotnetopenauth.oauth2.webserverclient(         server, "my-basecamp-id", "my-basecamp-secret");      client.requestuserauthorization(returnto: new uri("http://localhost:55321/settings/basecampauth"));     response.end();      return null; }  [httppost] public actionresult basecampauth() {     var server = new dotnetopenauth.oauth2.authorizationserverdescription();     server.authorizationendpoint = new uri("https://launchpad.37signals.com/authorization/new");     server.tokenendpoint = new uri("https://launchpad.37signals.com/authorization/token");       var client = new dotnetopenauth.oauth2.webserverclient(         server, "my-basecamp-id", "my-basecamp-secret");      var state = client.processuserauthorization(request);     response.write(state.accesstoken);     response.end();     return null; } 

the error basecamp:

---  :error: "unsupported type: nil. support user_agent , web_server." 

i've tried search , around, , not found interesting. / pointer appreciated.

thanks

change this:

server.authorizationendpoint = new uri("https://launchpad.37signals.com/authorization/new"); 

to this:

server.authorizationendpoint = new uri("https://launchpad.37signals.com/authorization/new?type=web_server"); 

note: added type=web_server end of uri.

take these official docs.