(C#) Banco Inter OAuth2 Client Credentials

Generate an OAuth2 access token needed to consume the Inter APIs.

For more information, see https://developers.bancointer.com.br/reference/token-3

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// 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;

// First load the certificate and private key, and set as the HTTP object's client certificate.
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadFromFile("<nome arquivo certificado>.crt");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

Chilkat.BinData bdPrivKey = new Chilkat.BinData();
success = bdPrivKey.LoadFile("<nome arquivo chave privada>.key");
if (success == false) {
    Debug.WriteLine("Failed to load <nome");
    return;
}

Chilkat.PrivateKey privKey = new Chilkat.PrivateKey();
success = privKey.LoadAnyFormat(bdPrivKey,"");
if (success == false) {
    Debug.WriteLine(privKey.LastErrorText);
    return;
}

success = cert.SetPrivateKey(privKey);
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

success = http.SetSslClientCert(cert);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.HttpVerb = "POST";
req.Path = "/oauth/v2/token";
req.ContentType = "application/x-www-form-urlencoded";
req.AddParam("grant_type","client_credentials");
// Requested scopes in OAuth2 are typically SPACE separated.
req.AddParam("scope","boleto-cobranca.read boleto-cobranca.write");
req.AddHeader("accept","application/json");

Chilkat.HttpResponse resp = http.PostUrlEncoded("https://cdpj.partners.bancointer.com.br/oauth/v2/token",req);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.JsonObject jResp = new Chilkat.JsonObject();
resp.GetBodyJson(jResp);
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;
}

success = jResp.WriteFile("qa_data/tokens/banco_inter_client_credentials.json");
if (success == false) {
    Debug.WriteLine("Failed to save JSON access token file.");
    return;
}

Debug.WriteLine("Success.");