SOCKOPT parameter*  ==  SOCKOPT=[no]name[:value]
                    --  default: reuse

Set socket options.

[reuse] | noreuse

enables instant reuse of a port number. (SO_REUSEADDR)

share | [noshare]

enables simultaneous use of a port. (SO_REUSEPORT)

[shut] | noshut

do shutdown(socket,SD_SEND) before closing a socket

shutdown:g[:connMap]

do graceful shutdown (for HTTP response) on Win32

buffsize:size[kiosc][:connMap]

set the size of socket buffers. The size value can be followed with following specifiers:

k -- size in kilo bytes
i -- input buffer (SO_RCVBUF)
o -- output buffer (SO_SNDBUF)
s -- socket to server
c -- socket from client


For example, SOCKOPT="buffsize:2kis" set the size of the socket buffer to receive data from a server to 2048 bytes. Multiple buffer size specifications can be concatenated with "+". For example, SOCKOPT="buffsize:2k" is equivalent to SOCKOPT="buffsize:2kis+2kos+2kic+2koc:*:*:*".