Question

I have a controller action in web api that return string token as below.Howver, the problem is whenever there is ‘/’ appear in server side response string, at client side I always get ‘/’ instead where ‘\’ is addition to original string. How can i get rid of it?

public string GetTrackProfile()
 {
    string token="0Q2l7m4dAekjCt/yIxk0txzyZAxjZMYZq6+OAXHPNorrel7hez2vnkLe61Mf2ZLL";
    return token;
 }

client side response

0Q2l7m4dAekjCt/yIxk0txzyZAxjZMYZq6+OAXHPNorrel7hez2vnkLe61Mf2ZLL

Answer 1

If this string is part of an HTTP header, then you should be aware that according to the RFC 2616 specification / is considered as a separator character and must be properly escaped (which is what the Web API does for you by prepending it with \):

Many HTTP/1.1 header field values consist of words separated by LWS or
special characters. These special characters MUST be in a quoted
string to be used within a parameter value (as defined in section
3.6).

   token          = 1*<any CHAR except CTLs or separators>
   separators     = "(" | ")" | "<" | ">" | "@"
                  | "," | ";" | ":" | "\" | <">
                  | "/" | "[" | "]" | "?" | "="
                  | "{" | "}" | SP | HT

---

UPDATE:

According to the comments, this string is part of a JSON serialized response. It is properly encoded. Let’s take the following example:

var json = {"d":"a\/b"};
alert(json.d);​

When you execute this code the correct string is shown – a/b. So this is a perfectly normal behavior.