(.NET Core C#) UPS OAuth2 Client Credentials

See more UPS Examples

Get an OAuth2 access token for the UPS REST API using the client credentials flow (no interactivity with a web browser required).

For more information, see https://developer.ups.com/api/reference?loc=en_US#tag/OAuthClientCredentials_other

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();
bool success;

// Implements the following CURL command:

// curl -i -X POST \
//   -u 2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt:nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4 \
//   https://wwwcie.ups.com/security/v1/oauth/token \
//   -H 'Content-Type: application/x-www-form-urlencoded' \
//   -H 'x-merchant-id: 7B3027' \
//   -d grant_type=client_credentials

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

http.BasicAuth = true;
http.Login = "2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt";
http.Password = "nerf254578uh8rgt7y3h57358ouyth387h8h53h6yyh80hh578per9y7u5ruyuy4";

Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.AddParam("grant_type","client_credentials");

req.AddHeader("x-merchant-id","7B3027");

Chilkat.HttpResponse resp = http.PostUrlEncoded("https://wwwcie.ups.com/security/v1/oauth/token",req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
resp.GetBodySb(sbResponseBody);

Chilkat.JsonObject jResp = new Chilkat.JsonObject();
jResp.LoadSb(sbResponseBody);
jResp.EmitCompact = false;

Debug.WriteLine("Response Body:");
Debug.WriteLine(jResp.Emit());

int respStatusCode = resp.StatusCode;
Debug.WriteLine("Response Status Code = " + Convert.ToString(respStatusCode));
if (respStatusCode >= 400) {
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(resp.Header);
    Debug.WriteLine("Failed.");

    return;
}

// Save the OAuth2 access token for other examples to use.
jResp.WriteFile("qa_data/tokens/ups_oauth2_token.json");

// If successful, the OAuth2 access token JSON looks like this:

// {
//   "token_type": "Bearer",
//   "issued_at": "1686911985606",
//   "client_id": "2498righ8wr6aihe98rt8rhowirtyw9er6twe80rtywrehrt",
//   "access_token": "eyJraW......R2sbqrY",
//   "expires_in": "14399",
//   "status": "approved"
// }

string token_type = jResp.StringOf("token_type");
string issued_at = jResp.StringOf("issued_at");
string client_id = jResp.StringOf("client_id");
string access_token = jResp.StringOf("access_token");
string expires_in = jResp.StringOf("expires_in");
string status = jResp.StringOf("status");