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Close the connection when peer have performed shutdown. #53

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@kldeng kldeng commented Mar 16, 2016

It's needed to check if the client has closed the connection during reading
HTTP post body. Or the RPC Server will become vunlnerable by the action
like below.
telnet
POST / HTTP/1.1
content-length: xx

and close the socket immediately. Then the RPC server will be stucked
in the recvfrom SYSCALL infinit loop and refuse to serve any other request.

…eading

HTTP post body. Or the RPC Server will become vunlnerable by the action
like below.
telnet <server-host> <server-port>
POST / HTTP/1.1
content-length: xx

and close the socket immediately. Then the RPC server will be stucked
in the recvfrom SYSCALL infinit loop.
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