（1）字节和数字的存储顺序是从右到左，依次是从低位到高位，而网络存储顺序是从左到右，依次从低位到高位。 （2）版本：占第一个字节的高四位。头长度：占第一个字节的低四位。 （3）服务类型：前3位为优先字段权，现在已经被忽略。接着4位用来表示 ...

This may be an stupid newbie question but at this point I'm ok with living with the shame. Suppose you have a situation in which you find out that some packets are never reaching your host, or at ...

Over the last several years, TCP/IP has gone from being the protocol that only geeks use, to a universal protocol that everyone uses, thanks to the widespread use of the Internet. TCP/IP has been ...

In a previous article, we explained how you can use the sendfile() syscall to reduce the overhead of data transfer from a disk to a network. Now, we’re going to cover another aspect of network ...

GL Communications Inc. has announced that its PacketExpert—a quad port Ethernet/IP tester—has been enhanced to support the RFC 6349 framework for TCP throughput testing. To verify Ethernet/IP-based ...

“Not being overcomplicated is Modbus TCP/IP’s biggest draw, not only for PLCs, but especially for PC-based applications,” said Jason Haldeman, senior product specialist for I/O and networking at ...