/// <summary>
/// Try to send request message and return the response as a message, or return null if not successful
/// </summary>
/// <param name="address">a string denoting the address to connect to</param>
/// <param name="requestMessage">The request message</param>
/// <param name="numTries">The number of times to try</param>
/// <param name="requestTimeout">The timeout for each request</param>
/// <param name="progressPublisher">Report topics: Failure, Retry, Send, Success</param>
/// <returns>the response message, or null if not successful</returns>
public static NetMQMessage RequestResponseMultipartMessageWithRetry([NotNull] string address, [NotNull] NetMQMessage requestMessage,
int numTries, TimeSpan requestTimeout, PublisherSocket progressPublisher = null)
{
NetMQMessage responseMessage = new NetMQMessage();
while (numTries-- > 0)
{
using (RequestSocket requestSocket = new RequestSocket(address))
{
progressPublisher?.SendFrame(ProgressTopic.Send.ToString());
requestSocket.SendMultipartMessage(requestMessage);
if (requestSocket.TryReceiveMultipartMessage(requestTimeout, ref responseMessage))
{
progressPublisher?.SendFrame(ProgressTopic.Success.ToString());
return(responseMessage);
}
progressPublisher?.SendFrame(ProgressTopic.Retry.ToString());
}
}
progressPublisher?.SendFrame(ProgressTopic.Failure.ToString());
return(null);
}
/// <summary>
/// Try to send request string and return the response string, or return null if not successful
/// </summary>
/// <param name="address">a string denoting the address to connect to</param>
/// <param name="requestString">The request string</param>
/// <param name="numTries">The number of times to try</param>
/// <param name="requestTimeout">The timeout for each request</param>
/// <param name="progressPublisher">Report topics: Failure, Retry, Send, Success</param>
/// <returns>the response message, or null if not successful</returns>
public static string RequestResponseStringWithRetry([NotNull] string address, [NotNull] string requestString,
int numTries, TimeSpan requestTimeout, PublisherSocket progressPublisher = null)
{
while (numTries-- > 0)
{
using (RequestSocket requestSocket = new RequestSocket(address))
{
progressPublisher?.SendFrame(ProgressTopic.Send.ToString());
requestSocket.SendFrame(requestString);
string frameString;
if (requestSocket.TryReceiveFrameString(requestTimeout, out frameString))
{
progressPublisher?.SendFrame(ProgressTopic.Success.ToString());
return(frameString);
}
progressPublisher?.SendFrame(ProgressTopic.Retry.ToString());
}
}
progressPublisher?.SendFrame(ProgressTopic.Failure.ToString());
return(null);
}