TCP MSS

jamesMember

guys,

having some doubt on tcp hope someone can help me understanding it. Assume L byte is send from node A to B. Assume MSS=1460 byte and sequence number feild has 4bytes. How can i calculate the maximum L value so the sequence number are not exhausted? thanks guys. apreciate your help.

10/22/072:02 AM

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themightyskunkMember

Use a CRC32. The theoretical collision rate is one collision every half-million (or so) message IDs. If you can steal 4 more bytes, a CRC64 has a collision rate of one in two trillion (or so).

Surprisingly, Visual Studio 2005 doesn't have a CRC32() function in the System.Security.Cryptography namespace, but java.util.zip implements a CRC32 class. Plenty of source code examples on the web, in any language.

10/23/078:59 PM

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