ITAPI3发送和接收数据 [英] ITAPI3 Sending and Receiving Data

问题描述

所以我试图创建一个应用程序将调用一个远程调制解调器，并做一些数据传输（自定义数据的字节数组的形式）。

So I am attempting to create an application that will call a remote modem and do some data transfer (custom data in the form of byte arrays).

我使用JulMar的ITapi3包装和C＃4.0上运行的Windows 7 64位操作系统（编译为86）。

I am using JulMar's ITapi3 wrapper and c# 4.0 running on Windows 7 64Bit OS (Compiling as x86).

我的应用已经使得手机通话和断开如我所料，但我无法真正跨线发送数据。目前我有以下的code在CallStateChanged事件时，呼叫状态连接

I have the application making the phone call and disconnecting as I expect but I am having trouble actually sending data across the line. currently I have the following code in the CallStateChanged event when the call state is connected

  var handleArray = callForData.GetID("comm/datamodem");

        var byteContents = BitConverter.ToInt64(handleArray, 0);
        ////temporary Handle array
        IntPtr myPointer =new IntPtr(byteContents);


        ////var pinnedArray = GCHandle.Alloc(handleArray, GCHandleType.Pinned);
        ////var pointer = pinnedArray.AddrOfPinnedObject();
        var commHandle = new SafeFileHandle(myPointer, true);
        try
        {
           //now init filestream
            _dataTransferOutFileStream = new FileStream(commHandle, FileAccess.ReadWrite, 2048, true);

            //start by writing the login message to the modem
            var buffer = CreatePasswordMessage();

       IAsyncResult result= _dataTransferOutFileStream.BeginWrite(buffer, 0, buffer.Length,null,null);

        while (!result.IsCompleted)
            {
            //wait for completion of sending login message.
            Thread.Sleep(10);
            }

            //now we are done with sending login message 
       _dataTransferOutFileStream.EndWrite(result);

            //wait 5 seconds 
            Thread.Sleep(5000);
            //do the same type of thing for the read or whether it was sucessful.
        var readBuffer = new byte[2048];
        IAsyncResult readResult = _dataTransferOutFileStream.BeginRead(readBuffer, 0, 2048,null,null);
        while (!readResult.IsCompleted)
            {
            Thread.Sleep(10);
            }

            //read is complete.

       int readCount = _dataTransferOutFileStream.EndRead(readResult);

            Debug.WriteLine("Read Complete Count of Bytes Read: {0} Content of First Byte: {1} ",new object[]{readCount,readBuffer[0]});
        }

        catch (Exception ex)
        {
            Debug.WriteLine(ex.ToString());
            return false;
        }
        finally
        {

            commHandle.Close();

        }




        return true;

似乎这不被实际发送数据或从远程站点recieving任何有效数据。有我丢失的东西？有没有一种方法来检查是否正在使用的SafeFileHandle实际上是一个参考调制解调器的端口？

This doesn't seem to be actually sending the data or recieving any valid data from the remote site. Is there something I am missing? Is there a way to check whether the SafeFileHandle being used is actually a reference to the modem's port?

我尝试使用内置的SerialPort类的。NET我连接后，但我得到一个错误的端口的问题是由另一个进程使用（我假设TAPI上有一个锁。）

I tried using the builtin SerialPort class for .NET after I am connected but I get an error that the port in question is in use by another process (I am assuming TAPI has a lock on it.)

我向所有人开放的建议。

I am open to all suggestions.

感谢你在前进。

推荐答案

好吧，我想出什么问题了。显然，我的格式，我发送到远程调制解调器和错误，而不是远程站点，告诉我，这是只是完全忽略我的信息数据。

Ok I figured out what the issue was. Apparently I was formatting the data I was sending to the remote modem incorrectly and rather than the remote site telling me that it was simply ignoring my message altogether.

所以，code以上会为发送和C＃​​异步接收通过调制解调器线数据。

So the code above will work for sending and receiving data asynchronously over a modem line in C#.

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