tcp.connection.syn
时间: 2023-04-24 12:01:52 浏览: 142
TCP连接的三次握手中的第一个步骤,即发送SYN(同步)标志的数据包。发送方向接收方发送一个SYN标志的数据包,表示请求建立连接,并告诉接收方自己的初始序列号。接收方收到SYN包后,会回复一个SYN+ACK(同步+确认)标志的数据包,表示同意建立连接,并告诉发送方自己的初始序列号。发送方再回复一个ACK(确认)标志的数据包,表示确认接收方的回复,连接建立成功。
相关问题
Use a figure to show the 3-way handshake to establish a connection in the TCP protocol.
Sure, here's a diagram that shows the 3-way handshake to establish a connection in the TCP protocol:
```
Client Server
| |
| SYN (Sequence=X) |
|---------------------------------------------->|
| |
| SYN (Sequence=Y, Ack=X+1) |
|<----------------------------------------------|
| |
| ACK (Acknowledgement=Y+1, Sequence=X+1) |
|---------------------------------------------->|
| |
| Connection Established |
| |
```
In this diagram, the client initiates the connection by sending a SYN (synchronize) message to the server. The message includes a randomly generated sequence number (X) that the server will use to identify subsequent messages from the client.
The server responds with a SYN-ACK message, which includes its own randomly generated sequence number (Y) and an acknowledgement number that is set to the client's sequence number plus one (X+1).
Finally, the client sends an ACK (acknowledge) message back to the server, which includes an acknowledgement number that is set to the server's sequence number plus one (Y+1).
Once the 3-way handshake is complete, both the client and server have agreed on a sequence number for the connection and are ready to exchange data.
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