Question

该场景是我正在使用sendgrid api 发送1000多封电子邮件。并且我已经使用 signalR 来通知用户，在发送电子邮件时已经发送了多少电子邮件，有多少未发送。三分钟后，信号器连接断开。我收到错误消息，由于闲置超过30秒而导致连接断开。

我尝试将keep-alive属性设置为null，并且还设置了5天，连接超时相同。当我设置这些属性时，我没有收到错误消息。但是Connection断开连接并重新开始，从零点开始发送电子邮件的过程。

这是我的代码

$(function () {

        ///Reference the auto-generated proxy for the hub.
        var progress = $.connection.progressHub;

        // Create a function that the hub can call back to display messages.
        // Function To nitify the user of email state
        progress.client.AddProgress = function (message, percentage, delivered, error) {                
            ProgressBarModal("show", delivered, error, message);
            $("#ProgressMessage").css("width", percentage + "%");                
            $('#ProgressMessage').text(percentage + "%");
            if (percentage == "100%") {
                ProgressBarModal();
            }
        };

        $.connection.hub.start({ pingInterval: null }).done(function () {
            var connectionId = $.connection.hub.id;
        });

        $.connection.hub.connectionSlow(function () {
            console.log("connectionSlow");
        });

        $.connection.hub.reconnecting(function () {
            console.log("Reconnecting Hub ");
        });

        $.connection.hub.disconnected(function () {                
            if ($.connection.hub.lastError) {
                alert("Disconnected. Reason: " + $.connection.hub.lastError.message);
            }

            // Restart connection after 5 seconds.
            setTimeout(function () {
                $.connection.hub.start();
            }, 6); 

        });
    });

中心代码

public class ProgressHub : Hub
{
    public static void SendProgress(string progressMessage, int progressCount, int totalItems, int delivered, int error)
    {
        try
        {                                
            IHubContext context = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();

            //CALCULATING PERCENTAGE BASED ON THE PARAMETERS SENT
            var percentage = (progressCount * 100) / totalItems;

            progressMessage = "Processed Mails " + progressCount + " out of " + totalItems + ".";

            //PUSHING DATA TO ALL CLIENTS
            context.Clients.All.AddProgress(progressMessage, percentage.ToString(), delivered, error);
        }
        catch (Exception ex)
        {
            throw;
        }
    }
}

我在c＃控制器的for循环中调用此函数，每发送100封邮件（无论电子邮件状态如何），循环就会休眠1分钟。

ProgressModalUiUpdate(progressbarResult, campaignSessionid, errorCount, hubCount, totalNoOfMailsToBeSend);

谁能帮我解决问题。

3分钟后，SignalR会断开连接，断开连接后重新连接时，过程将从零点重新开始

0 个答案: