// test simple authentication
HRESULT CTestMessageHandler::Test3()
{
    CStunMessageBuilder builder1, builder2, builder3;
    CStunMessageReader readerResponse;
    uint16_t errorcode = 0;
    HRESULT hr = S_OK;
    

    // -----------------------------------------------------------------------
    // simulate an authorized user making a request with a valid password
    
    ChkA(InitBindingRequest(builder1));
    builder1.AddStringAttribute(STUN_ATTRIBUTE_USERNAME, "AuthorizedUser");
    builder1.AddMessageIntegrityShortTerm("password");
    builder1.FixLengthField();
    
    ChkA(SendHelper(builder1, &readerResponse, _spAuthShort));
    ChkA(readerResponse.ValidateMessageIntegrityShort("password"));
    

    // -----------------------------------------------------------------------
    // simulate a user with a bad password
    readerResponse.Reset();
    InitBindingRequest(builder2);
    builder2.AddStringAttribute(STUN_ATTRIBUTE_USERNAME, "WrongUser");
    builder2.AddMessageIntegrityShortTerm("wrongpassword");
    builder2.FixLengthField();
    
    ChkA(SendHelper(builder2, &readerResponse, _spAuthShort))
    
    errorcode = 0;
    ChkA(readerResponse.GetErrorCode(&errorcode));
    ChkIfA(errorcode != ::STUN_ERROR_UNAUTHORIZED, E_FAIL);
    
    // -----------------------------------------------------------------------
    // simulate a client sending no credentials - we expect it to fire back with a 400/bad-request
    readerResponse.Reset();
    ChkA(InitBindingRequest(builder3));
    
    ChkA(SendHelper(builder3, &readerResponse, _spAuthShort));
    
    errorcode = 0;
    ChkA(readerResponse.GetErrorCode(&errorcode));
    ChkIfA(errorcode != ::STUN_ERROR_BADREQUEST, E_FAIL);
    
Cleanup:
    return hr;
    
}
// test long-credential authentication
HRESULT CTestMessageHandler::Test4()
{
    HRESULT hr=S_OK;
    CStunMessageBuilder builder1, builder2;
    CStunMessageReader readerResponse;
    CSocketAddress addrMapped;
    uint16_t errorcode = 0;
    char szNonce[MAX_STUN_AUTH_STRING_SIZE+1];
    char szRealm[MAX_STUN_AUTH_STRING_SIZE+1];
    

    // -----------------------------------------------------------------------
    // simulate a user making a request with no message integrity attribute (or username, or realm)
    InitBindingRequest(builder1);
    builder1.FixLengthField();
    
    ChkA(SendHelper(builder1, &readerResponse, _spAuthLong));
    
    Chk(readerResponse.GetErrorCode(&errorcode));
    
    ChkIfA(readerResponse.GetMessageClass() != ::StunMsgClassFailureResponse, E_UNEXPECTED);
    ChkIf(errorcode != ::STUN_ERROR_UNAUTHORIZED, E_UNEXPECTED);

    readerResponse.GetStringAttributeByType(STUN_ATTRIBUTE_REALM, szRealm, ARRAYSIZE(szRealm));
    readerResponse.GetStringAttributeByType(STUN_ATTRIBUTE_NONCE, szNonce, ARRAYSIZE(szNonce));
    
    
    // --------------------------------------------------------------------------------
    // now simulate the follow-up request
    readerResponse.Reset();
    InitBindingRequest(builder2);
    builder2.AddNonce(szNonce);
    builder2.AddRealm(szRealm);
    builder2.AddUserName("AuthorizedUser");
    builder2.AddMessageIntegrityLongTerm("AuthorizedUser", szRealm, "password");
    builder2.FixLengthField();
    
    ChkA(SendHelper(builder2, &readerResponse, _spAuthLong));
    
    ChkIfA(readerResponse.GetMessageClass() != ::StunMsgClassSuccessResponse, E_UNEXPECTED);
    
    // should have a mapped address
    ChkA(readerResponse.GetMappedAddress(&addrMapped));
    
    // and the message integrity field should be valid
    ChkA(readerResponse.ValidateMessageIntegrityLong("AuthorizedUser", szRealm, "password"));
    
Cleanup:
    return hr;
}