Example #1
0
        /// <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);
        }
Example #2
0
        /// <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);
        }