Disable Hostname Varification at client-side

[Alveena Rifat]

I want to disable hostname verification at client side without using the args.SetSslTargetNameOverride() function. I have the following piece of code where I want to wrap around the low-level-C-style grpc_channel_credentials to C++-style ChannelCredentials and can not really find a wrapper for it. The gRPC lib does not even provide one.                                                                                                                                                                   std::shared_ptr<grpc::Channel> createSecureChannel(const std::string& p_proxyPortIp,
                                                       std::shared_ptr<Config::TLSConfig> p_tlsConfig)
     {  
         // Extract the TLS details from the configuration
         std::string certPath = readFileToString(p_tlsConfig->getCertificateLocation());
         std::string keyPath = readFileToString(p_tlsConfig->getPrivateKeyLocation());
         std::string rootCertPath = readFileToString(p_tlsConfig->getTrustedAuthorityLocation());
       
        grpc_ssl_verify_peer_options verify_options;
        verify_options.verify_peer_callback = &ProtoBaseChannel::skip_hostname_verification;

        verify_options.verify_peer_callback_userdata = nullptr;      

                                                                                                                                          grpc_ssl_pem_key_cert_pair pem_key_cert_pair;

        pem_key_cert_pair.private_key = keyPath.c_str();

        pem_key_cert_pair.cert_chain = certPath.c_str();          

// Use grpc_ssl_credentials_create_ex to create SSL credentials with custom verification options
        grpc_channel_credentials* low_level_ssl_creds = grpc_ssl_credentials_create_ex(
            rootCertPath.c_str(), &pem_key_cert_pair, &verify_options, nullptr
        );        

        // Wrap the raw `grpc_channel_credentials*` with a std::shared_ptr (C++ API expects this type) -> does not work !!
        std::shared_ptr<grpc::ChannelCredentials> ssl_creds_cpp = std::shared_ptr<grpc::ChannelCredentials>(
            reinterpret_cast<grpc::ChannelCredentials*>(low_level_ssl_creds)
        );                                                                                                                                 

       return grpc::CreateCustomChannel(p_proxyPortIp, ssl_creds_cpp, grpc::ChannelArguments());