22 Aug
2014
22 Aug
'14
11:51 p.m.
On Sat, Aug 23, 2014 at 04:11:42AM +1000, Dave Horsfall wrote:
On Fri, 22 Aug 2014, Ronald Natalie wrote:
lmbench has one:
/*
* Get a TCP socket, bind it, figure out the port,
* and advertise the port as program "prog".
*
* XXX - it would be nice if you could advertise ascii strings.
*/
int
tcp_server(int prog, int rdwr)
/*
* Unadvertise the socket
*/
int
tcp_done(int prog)
/*
* Accept a connection and return it
*/
int
tcp_accept(int sock, int rdwr)
/*
* Connect to the TCP socket advertised as "prog" on "host" and
* return the connected socket.
*
* Hacked Thu Oct 27 1994 to cache pmap_getport calls. This saves
* about 4000 usecs in loopback lat_connect calls. I suppose we
* should time gethostbyname() & pmap_getprot(), huh?
*/
int
tcp_connect(char *host, int prog, int rdwr)
void
sock_optimize(int sock, int flags)
int
sockport(int s)
I swiped all that code and we use it in bitkeeper.
sock = tcp_server(0, port, 0);
if (sock == -1) exit(1);
verbose((stderr, "started server on port %d\n", sockport(sock)));
while (1) {
if ((nsock = tcp_accept(sock)) < 0) continue;
peer = peeraddr(nsock);
verbose((stderr, "connection from %s\n", peer));
fin = fdopen(nsock, "r");
fout = fdopen(nsock, "w");
info_cmds(fin, fout, dashx);
fclose(fin);
fclose(fout);
verbose((stderr, "%s is done\n", peer));
}
--
---
Larry McVoy lm at mcvoy.com http://www.mcvoy.com/lm
I hate the socket interface, at least once you
use it's goofy interface
on UNIX, it works mostly like a file descriptor.
In a previous slavery we had a simple socket library; the application did
little more than say whether it was a client or a server etc. I wish I
could steal that code now...