c# web api How to pass a url as parameter

Question

I have a c# Web api, like this:

[HttpGet]
[Route("gatewayinfo/{endpointAddress}")]
public GatewayModel GetGatewayInfo(string endpointAddress)

when I call that api I need to pass in an url as address (http://example.con)

How can I do that with HttpClient? If I put url in parameter it won't work :

var client = new HttpClient();
client.SetBearerToken(token);
var result = await client.GetStringAsync(_webApiAddress + parameter);

So what's the value of _webApiAddress + parameter just before execution? Did you verify that your API returns correct data if e.g. called with http://localhost:8080/gatewayinfo/http://www.example.com/? These slashes in the "URL" could make it difficult to parse; seems like a weird format to me with the protocoll. Maybe just do a gatewayinfo/example.com without slashes in the endpointAddress? — Maximilian Gerhardt
– Maximilian Gerhardt, Commented Jan 15, 2016 at 0:44
Have you tried encoding the url before passing it as parameter? — DivideByzero
– DivideByzero, Commented Jan 15, 2016 at 0:46

Kien Chu · Accepted Answer · 2016-01-15 01:35:04Z

3

you will need to encode the param

using (var client = new HttpClient())
{
    client.BaseAddress = new Uri(_webapiAddress);
    client.SetBearerToken(token)

    var result  = await client.GetStringAsync($"gatewayinfo/{HttpUtility.UrlEncode(parameter)}");
}

answered Jan 15, 2016 at 1:35

Kien Chu

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1 Comment

Todd Liang Over a year ago

Thanks, I actually made a change to Convert url to base64 and pass the base64 string as parameter. At web api I convert base64 back to url.

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