Issues authenticating the API using .NET

Leslie Bradt

September 30, 2011 04:19

Answered

hello,

i'm having issues trying to authenticate the API using a GET request with HttpWebRequest in .NET.

I have built the following header in my Request, can someone tell me what i might be missing?

Headers {

Content-Type: application/vnd.ticketevolution.api+json; version=8; charset=utf-8

X-Signature: qlmoLQ0LeBF/h7+4t9MLvXiqw6WU8w6AAbOLziozQUA=

X-Token: 2ea5e03d4d4dc79e457186412d81552a

Host: api.sandbox.ticketevolution.com

Connection: Keep-Alive}

URL: http://api.sandbox.ticketevolution.com/brokerages?page=1&per_page=1

Exception {"The remote server returned an error: (401) Unauthorized."} System.Exception {System.Net.WebException}

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Leslie Bradt October 03, 2011 04:00

Ok, i was able to get a response back, using the following .NET code. Although, the Get response returned Example/Version info, not the desired request list.

string apiRequest = "GET https://api.ticketevolution.com/brokerages";

string apiVersion = "application/vnd.ticketevolution.api+json; version=8";

string baseUri = "http://api.ticketevolution.com";

// Create the request obj

WebRequest wr = WebRequest.Create(baseUri);

HttpWebRequest request = (HttpWebRequest)wr;

string apiSignature = HashKey(apiRequest, apiSecret);

request.Headers.Add("X-Signature: " + apiSignature);

request.Accept = apiVersion;

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Leslie Bradt October 03, 2011 04:05

The response i get is the webservice info. Is there anything incorrect in the above coding?

Response

<!DOCTYPE html>\n<html>\n<head>\n<title>Ticket Evolution API</title>\n<link href=\"/stylesheets/api.css?1315448618\" media=\"screen\" rel=\"stylesheet\" type=\"text/css\" />\n<script src=\"http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js\" type=\"text/javascript\"></script>\n<script src=\"http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/jquery-ui.min.js\" type=\"text/javascript\"></script>\n<meta content=\"text/html; charset=utf-8\" http-equiv=\"Content-Type\">\n</head>\n<body>\n<h1>Ticket Evolution API</h1>\n<p>Version 8 — 2011-09-07</p>

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714 October 05, 2011 17:18

Here is the code I've been sharing to get you started with a valid api response.

            string api = "api.ticketevolution.com/" + urlParams;

            string token = "YOUR TOKEN";

            string secret = "YOUR SECRET";

            System.Text.Encoding encoding = new System.Text.UTF8Encoding();

            byte[] bRequest = encoding.GetBytes("GET " + api);

            byte[] bSecretkey = encoding.GetBytes(secret);

            HMACSHA256 myhmacsha256 = new HMACSHA256(bSecretkey);

            myhmacsha256.ComputeHash(bRequest);

            string X_Signature = Convert.ToBase64String(myhmacsha256.Hash);

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://" + api);

            request.Method = "GET";

            request.Accept = "application/vnd.ticketevolution.api+json; version=8";

            request.Headers.Add("X-Signature", X_Signature);

            request.Headers.Add("X-Token", token);

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            StreamReader loResponseStream = new

                StreamReader(response.GetResponseStream());

            string Response = loResponseStream.ReadToEnd();

            response.Close();

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714 October 05, 2011 17:24

Also, don't send a request to api.ticketevolution.com without requesting a specific service because you'll just get back the api docs (see by browsing to that url) and you'll always get a valid response. Try this string for the variable urlParams and you should get back a json string in the Response variable:

String urlParams = "events?occurs_at.gte=2011-10-05&page=1";

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