+ (plus) sign in Web API routing

Question

I'm working with an asp.net web api project, and I have to pass an mobile number through a post. But i cannot return a plus sign.

my route:

config.Routes.MapHttpRoute(      name: "SmsRoute",     routeTemplate: "rest/sms/{country}/{company}/phone/{mobilenumber}",     defaults: new { controller = "Sms", action = "PostSms" }); 

controller:

public HttpResponseMessage PostSms(string country, string company, string mobilenumber) {     return Request.CreateResponse( HttpStatusCode.Created ); } 

When I run this post method on fiddler:

http://index.html/rest/sms/se/company/phone/46700101010/messages/out 

I'm getting this response:

But I want it to be able to show me the plus sign.

Answer 1

IIS prevents plus-signs from being in URL path elements.

To disable this feature, in web.config:

<system.webServer>     <security>         <requestFiltering allowDoubleEscaping="true" />     </security> </system.webServer>