HTTP client connection error messages

When a connection error occurs, the HTTP client prints an error message to the console.

• Invalid response

  The connection was broken when the client was waiting for a response from the server. The client exits after this error.

• Invalid response followed by CONNECTION_CLOSED

  The connection was broken when the client was transmitting a file to scan to the server.

• Invalid response followed by CLIENT_TIMEOUT

  Client timeout (defined by the -t option) was exceeded.

• HTTP_ERROR 408 Request Timeout

  The processing timeout (defined by the SessionTimeout parameter) was exceeded.