...报(UDP Datagram),然后再把这个数据报传给IP。 TCP会把应用程序发来的数据根据需要分成若干个大小合适的TCP段(TCP Segment),而UDP却只是简单地把所有发送来的数据打包成一个UDP数据报,所以我们在编写使用UDP的程序时,不能一次性向UDP写入太多数据,否...
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As discussed above, when Host a wants to establish a TCP connection to destination Host d, it sends a TCP segment with the SYN flag set first.
如上所述,当主机A想建立到目的地主机d的TCP连接时,它首先发送设置了SYN标志的tcp段。
Using this method, you can at least know (or guess, rather) what TCP segment sizes are likely to be passed through without getting fragmented at the IP level.
使用这种方法,您至少可以了解(或者猜测)在不对ip层进行分片的情况下可能通过的tcp报文段的大小。
Consider a TCP connection establishment in which a client does an active open and a server does a passive open. Moreover, the acknowledgment from the client (the third TCP segment) is lost.
这个我清楚,但是三次握手过程中,客户端没有在要求服务器端发送一个确认包确认他已经收到了第三个包啊!
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