Todo:golang Language TCP/UDP protocol reuse address port

Todo:golang Language TCP/UDP protocol reuse address port

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This is a simple package to solve the problem of reusing addresses. The Go net package (as far as I know) is not allowed to set socket options. This is particularly problematic when attempting TCP NAT, which requires listening and dialing on the same TCP port. This package makes it possible for me to implement this function. This is a very small use case, but perhaps this package can become more common over time.

This package allows listening and dialing from the same TCP port, not listening with the same UDP port, but listening to the same UDP port. This means that the following sockopts are set:

Syscall. So_reuseaddr

Syscall. So_reuseport

Example:

Listen on the same port.

L1, _: = Reuse. Listen ("TCP", "127.0.0.1:1234")

L2, _: = Reuse. Listen ("TCP", "127.0.0.1:1234")

Dial from the same port.

L1, _: = Reuse. Listen ("TCP", "127.0.0.1:1234")

L2, _: = Reuse. Listen ("TCP", "127.0.0.1:1235")

C1, _: = Reuse. Dial ("TCP", "127.0.0.1:1234", "127.0.0.1:1235")

C2, _: = Reuse. Dial ("TCP", "127.0.0.1:1234", "127.0.0.1:1235")

The following is a complete TCP dialing example, tested in Ubuntu 14.04 Sever

Server code:

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Client code:

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If you have a scenario where you need to reuse TCP/UDP's address and port, try this package and hopefully you'll get the most out of it.

Wxgzh:ludong86

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This article is from the computer language driven data blog, so be sure to keep this source http://onetodo.blog.51cto.com/12321875/1878041

Todo:golang Language TCP/UDP protocol reuse address port