"TCP reliability of the transmission mechanism," the study notes

table of Contents

Introduction to TCP data segment

Reliability data transport mechanism section

1. The three-way handshake - the basic conditions for reliable transmission

2. byte numbering scheme

3. sliding window mechanism

4. timeout retransmission mechanism

The reliability of the data segment to accept the mechanism

1. The correct data segment to accept the acknowledgment mechanism

2. The data receiving end removes the TCP segment is correct recombinant TCP segment

Data, selectively receiving mechanism

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https://edu.csdn.net/course/play/1593/24579 

Introduction to TCP data segment

Reliability data transport mechanism section

1. The three-way handshake - the basic conditions for reliable transmission

2. byte numbering scheme

Data segment, the next byte segment of the segment ID followed by the byte sequence number

3. sliding window mechanism

Ensure that data sent will not overflow

4. timeout retransmission mechanism

Ensure that the mechanism did not receive overtime can resend

Reliability accepted mechanism

1. The correct data segment to accept the acknowledgment mechanism

Continuous data segment to confirm, 201,101,301 is continuous, missing 401;

Therefore, the field of acknowledgment value 401

2. The data receiving end removes the TCP segment is correct recombinant TCP segment

Remove the head the longest 60 bytes;

The main interest of the data segments;

Data, selectively receiving mechanism

Avoid large accept duplicate data segments