Call getsockopt() on the correct socket.
We're interested in the buffer size of the socket that's connected to the client, not the one that's listening for new connections. It happened to work, as default buffer size is the same on both, but it was clearly not wrong. Spotted by Tom Lane
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@ -773,7 +773,7 @@ StreamConnection(pgsocket server_fd, Port *port)
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* https://msdn.microsoft.com/en-us/library/bb736549%28v=vs.85%29.aspx
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*/
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optlen = sizeof(oldopt);
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if (getsockopt(server_fd, SOL_SOCKET, SO_SNDBUF, (char *) &oldopt,
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if (getsockopt(port->sock, SOL_SOCKET, SO_SNDBUF, (char *) &oldopt,
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&optlen) < 0)
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{
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elog(LOG, "getsockopt(SO_SNDBUF) failed: %m");
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