Is there a way to send escaped period character in Uri for HttpClient

Question

I am trying to make a GET http request with period in url

ex http://testsite.com/TestEndpoint/Members/first%2Elast%40testemail%2Ecom

in above example first.last@testemail.com is escaped to first%2Elast%40testemail%2Ecom

The problem is HttpClient creates a Uri from the string which unescapes the %2E to . (part of the url turns to first.last%40testmail.com) which causes public API to throw endpoint not found error.

I can make this request from Postman and it works just fine but from .net HttpClient or WebRequest.Create fails.

Is there a way to tell HttpClient not to un-escape the url?

var uri = new Uri("http://testsite.com/TestEndpoint/Members/first%2Elast%40testemail%2Ecom");

I also tried Creating an Uri in .NET automatically urldecodes all parameters from passed string

but that has no effect, not sure if that feature is broken or no longer supported.

Could you edit and append your code to make your issue more reproduceable? — MZanetti, Sep 16 '19 at 18:53
Well, since the `new Uri` _un-escape_ your result, simply don't do that replacement in the first place, and it should work as is, or no? — Asons, Sep 16 '19 at 19:07
@LGSon I do need it escaped, Uri class un-escapes period characters. — Mayank, Sep 16 '19 at 19:10
Yes, I got that, but what if you pass in a string that has period character? ... Doesn't it _escape_ those? — Asons, Sep 16 '19 at 19:11
@LGSon Nope, Uri class unescapes periods and slashes. It only escapes unsafe Uri characters. — Mayank, Sep 16 '19 at 19:17
@JessedeWit It internally creates a Uri and calls Uri overload. — Mayank, Sep 16 '19 at 20:21
I believe this is a great question, and it feels like your case should be possible somehow... — Jesse de Wit, Sep 19 '19 at 16:38
I'm having the exact same problem. I'm given a signed url (including %2E) from a third party and then I'm unable to get the resource because HttpClient un-escapes the url so my request no longer matches the signed one. Did you find a solution? — Ulf Kristiansen, Jan 21 '20 at 14:29

score -1 · Answer 1 · answered Sep 16 '19 at 18:59

-1

You can try to further "escape" your intended URL with:

client.GetAsync(new Uri("http://testsite.com/testendpoint?members=" + HttpUtility.UrlEncode("first%2Elast%40testemail%2Ecom"));

answered Sep 16 '19 at 18:59

awais

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That will not work as that will cause string to turn into **http://testsite.com/testendpoint/first%252Elast%2540testemail%252Ecom** – Mayank Sep 16 '19 at 19:03
You should not pass as an argument the escaped string into UrlEncode, but the actual unescaped string. – MZanetti Sep 17 '19 at 11:05
@MZanetti Passing that to the Uri constructor would produce the same problem, because it produces the same string. – Jesse de Wit Sep 18 '19 at 13:03

Is there a way to send escaped period character in Uri for HttpClient

1 Answers1