通过套接字捕获 smtp 电子邮件服务器返回代码的问题

Question

我编写了一个简单的 smtp 邮件发送程序的（精简版）。
一切正常（在这个精简版本和更复杂的版本中）。

但是，电子邮件服务器在发送邮件时会返回许多消息。
ProgressEvent.SOCKET_DATA（handleNewData函数）似乎没有捕获所有电子邮件返回消息
（特别是我想捕捉
250 2.0.0 好的：按 XYZ 排队
消息以确认消息已发送。

有人知道为什么所有消息都没有被handleNewData捕获，我该如何纠正这个问题？

提前致谢。

我的代码是用 Adob​​e Air 2.5 编写的

我的跟踪输出如下：

Connecting to the mail server, example.com:25  
     Response is: 220 example.com ESMTP Postfix  
     Response is: 250 example.com  
     Response is: 250 2.1.0 Ok  
250 2.1.5 Ok  
354 End data with <CR><LF>.<CR><LF>  
250 2.0.0 Ok: queued as 2C0264F5FF  
221 2.0.0 Bye  

我的代码如下：

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
                   xmlns:s="library://ns.adobe.com/flex/spark" 
                   xmlns:mx="library://ns.adobe.com/flex/mx"
                   creationComplete="Smtp()">
<fx:Declarations>
    <!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>

<s:Button label="Send Email" x="200" y="200" click="mail()"> </s:Button>

<fx:Script>
    <![CDATA[

            import flash.net.Socket;
            import flash.profiler.showRedrawRegions;
            import flash.utils.ByteArray;

            import mx.core.mx_internal;
            import mx.utils.ObjectUtil;

            private var socket:Socket;
            private var serverURL:String;
            private var serverPort:int = 25;
            private var serverResponse:ByteArray = new ByteArray();
            public var sendData:Array = new Array();
            public var dataStr:String;                  


            public function Smtp():void 
            {
                this.serverURL = "example.com";
                this.serverPort = 25;
                socket = new Socket();
            socket.addEventListener(ProgressEvent.SOCKET_DATA,handleNewData); 
                this.connectToServer();
            }

            public function mail():void
            {
                dataStr ="HELO example.com" + "\r\n";
                sendString(dataStr);                

                dataStr = "MAIL FROM:<[email protected]>\r\n";
                sendString(dataStr);

                dataStr = "RCPT TO:<[email protected]>\r\n";
                sendString(dataStr);

                dataStr = "DATA\r\n";
                sendString(dataStr);

                dataStr = "To: <[email protected]>\r\n";
                sendString(dataStr);

                dataStr = "Date: Wed Jan 26 2011 07:49:31 PM\r\n"
                sendString(dataStr);

                dataStr = "Subject: Test\r\n";
                sendString(dataStr);

                dataStr = "My Text\r\n";
                sendString(dataStr);

                dataStr = ".\r\n";
                sendString(dataStr);

                dataStr = "QUIT\r\n";
                sendString(dataStr);    
            } 

            private function connectToServer():void
            {
                trace("Connecting to the mail server, " + serverURL + ":" + serverPort);
                socket.connect(serverURL, serverPort);
            }


            private function sendString(dataStr:String):void
            {
                var bytes:ByteArray = new ByteArray();
                bytes.writeMultiByte(dataStr, "UTF-8");
                socket.writeBytes(bytes);
                socket.flush();
            }

            private function handleNewData(event:ProgressEvent):void
            {
                var numBytes:int = socket.bytesAvailable;
                serverResponse = new ByteArray();
                while(--numBytes >= 0)
                {
                    var byte:int = socket.readUnsignedByte();
                    serverResponse.writeByte(byte);
                }       

                var response:String = serverResponse.toString();
                trace("\t Response is: " + response);                       
            }   


    ]]>
</fx:Script>
</s:WindowedApplication>

Answer 1

抱歉，

套接字确实正在接收所有服务器响应:-)

只是在返回排队消息的部分附近，套接字一次接收了几行。

哦，好吧，希望代码对某人有用。