多线程tcp(多线程tcp客户端)

看下对应端口的服务，有并发量的限制吧

首先，你需要确定一个算法，例如：A发送给B，B收到数据包后，给A发送一个确认包，A收到确认包后，本次完成，如果超时没收到确认包，那么重发上次的数据包。 以上只是一个例子，实际应用的时候还有很多细节需要调整。 希望能对楼主有所帮助。
看MSDN吧 用SOCKET 或者TCPClient 类!MSDN上有例子代码我没有办法提供.最近心情不怎么好,而且也没有时间写例子
http://wenku.baidu.com/view/0c63184e767f5acfa1c7cd70.html 去看看吧
我有例子代码 287641467

看源代码会比较好。 #define TCP_A_RETRANSMISSION0x0001#define TCP_A_OUT_OF_ORDER0x0200/* RETRANSMISSION/FAST RETRANSMISSION/OUT-OF-ORDER* If the segment contains data (or is a SYN or a FIN) and* if it does not advance the sequence number, it must be one* of these three.* Only test for this if we know what the seq number should be* (tcpd->fwd->nextseq)** Note that a simple KeepAlive is not a retransmission*//* If there were >=2 duplicate ACKs in the reverse direction* (there might be duplicate acks missing from the trace)* and if this sequence number matches those ACKs* and if the packet occurs within 20ms of the last* duplicate ack* then this is a fast retransmission*//* If the segment came <3ms since the segment with the highest* seen sequence number and it doesn't look like a retransmission* then it is an OUT-OF-ORDER segment.* (3ms is an arbitrary number)*/这个大概是说序号有跳跃，就是原来的序号+片段长度<新序号，而且不是快速重传，那就是乱序/* Check for spurious retransmission. If the current seq + segment length* is less then the receivers lastask, the packet contains duplicated* data and may be considered spurious. */

使用完成端口(IOCP来实现); 搜索关键词 完成端口 或 IOCP即可.

QT界面中，点击开始键。 开启thread线程，建立TCP连接。 并在主线程中运行thread对象中的sendData函数，实现TCP发送数据。