WeChat Tanabata red envelope cover product key: 001k1;
WeChat Tanabata red envelope cover installation serial numbers: 666-69696969, 667-98989898, 400-45454545, 066-6666;
WeChat Tanabata red envelope cover product key: 001j1;
WeChat Tanabata red envelope cover installation serial number: 666-69696969 667-98989898 400-45454545 066-66666;
WeChat Tanabata red envelope cover product key: 001i1;
Extended data:
In network analysis, knowing the changing trend of TCP serial number and acknowledgement number can help us learn TCP protocol and eliminate communication faults. For example, we can determine whether there is an error in data transmission by looking at the serial number and the confirmation number.
TCP protocol works at the transport layer of OSI and is a reliable connection-oriented data flow protocol. TCP is reliable because it guarantees the order of transmitting data packets.
The order is guaranteed by the serial number. The response packet also contains a serial number, indicating that the receiver has prepared the packet with this serial number. When TCP sends a packet, it will put the packet in the retransmission queue and start the timer.
If an acknowledgement message about the packet is received, the packet will be deleted from the queue. If the acknowledgement information is still not received when the timer expires, the packet needs to be retransmitted. In addition, TCP ensures that all transmitted data can be reassembled in normal order through the sequence number in the data segment, thus ensuring the integrity of data transmission.
There are three main processes in TCP communication: connection establishment, data transmission and connection closure! The tasks completed by each process are different, and the changes of serial number and confirmation number in each process are also different.