TCP_IP基本知识学习摘要（douglas comer)

1. 2 paradigms of communication: stream, message

2. identification

    computer -- IP address + DNS

    service    -- port number

3. peer to peer system

4. socket API (chapter 3.15)

 

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ICMP

request(type 8)/reply(type 0)

error (type 3)

source quench message -- congestion

a router will send source quench message to source in congestion status

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CIDR and route aggregation