setsockopt

I'd like to test whether particular socket options have been set on an existing socket. Ie, pretty much everything you can see in: #!/usr/bin/env python '''See possible TCP socket options''' import socket sockettypelist = [x for x in dir(socket) if x.startswith('SO_')] sockettypelist.sort() for sockettype in sockettypelist: print sockettype Anyone know how I can see the options on existing sockets, ie those created by other processes? Alas nearly all the documentation I read on Python socket programming is about making new sockets. Unfortunately, nailer's answer only catches the SOL_TCP level

I'm making a program which create a RAW socket in order to read all traffic. Between the call of socket() and recvfrom() (last one is in a loop to get out all packets from buffer) I wait 5s. When I run the program, I send about 200 packets with hping3 command in « faster mode » (to fill in the buffer fastly) to my program. As soon as 5s are elapsed, my program extract about 150 packets from the buffer. I try to change the size of the receive buffer to get better result: int a = 65535; if ( (setsockopt(sockfd, 0, SO_RCVBUF, &a ,sizeof(int)) ) < 0 ) { fprintf(stderr, "Error setting sock opts..\n

This question already has an answer here: Socket options SO_REUSEADDR and SO_REUSEPORT, how do they differ? Do they mean the same across all major operating systems? 1 answer From the man page: SO_REUSEADDR Specifies that the rules used in validating addresses supplied to bind() should allow reuse of local addresses, if this is supported by the protocol. This option takes an int value. This is a Boolean option When should I use it? Why does "reuse of local addresses" give? TCP's primary design goal is to allow reliable data communication in the face of packet loss, packet reordering, and — key