IP,TCP,UDP报头结构 2008-05-07 16:25 IEEE 802.3 header 000102030405060708091011121314151617181920212223242526272829303132333435363738394041424344454647 Destination address Source address Ethertype Data :: TCP header: 0001020304050607080910111213141516171819202122232425262728293031 Version IHL Differentiated Services Total length Identification Flags Fragment offset TTL Protocol Header checksum Source IP address Destination IP address Options and padding ::: TCP header: 0001020304050607080910111213141516171819202122232425262728293031 Source Port Destination Port Sequence Number Acknowledgment Number Data Offset reserved ECN Control Bits Window Checksum Urgent Pointer Options and padding ::: Data ::: UDP header: 0001020304050607080910111213141516171819202122232425262728293031 Source Port Destination Port Length Checksum Data :::