Clients using pqlib can get some boost by increasing tcp/ip window size. It might be good to make it a settable parameter.
Anyway, maybe something like this:
/* ----------
* connectNoDelay -
* Sets the TCP_NODELAY socket option.
* Returns 1 if successful, 0 if not.
* ----------
*/
static int
connectNoDelay(PGconn *conn)
{
int on = 1;
#ifdef TCP_NODELAY
if (setsockopt(conn->sock, IPPROTO_TCP, TCP_NODELAY,
(char *) &on,
sizeof(on)) < 0)
{
char sebuf[256];
printfPQExpBuffer(&conn->errorMessage,
libpq_gettext("could not set socket to TCP no delay mode: %s\n"),
SOCK_STRERROR(SOCK_ERRNO, sebuf, sizeof(sebuf)));
return 0;
}
#endif
on = 65535;
if (setsockopt(conn->sock, SOL_SOCKET, SO_RCVBUF,
(char *) &on,
sizeof(on)) < 0)
{
printfPQExpBuffer(&conn->errorMessage,
"connectNoDelay() -- setsockopt SO_RCVBUF failed: errno=%d\n%s\n",
errno, strerror(errno));
#ifdef WIN32
printf("Winsock error: %i\n", WSAGetLastError());
#endif
return 0;
}
on = 65535;
if (setsockopt(conn->sock, SOL_SOCKET, SO_SNDBUF,
(char *) &on,
sizeof(on)) < 0)
{
printfPQExpBuffer(&conn->errorMessage,
"connectNoDelay() -- setsockopt SO_SNDBUF failed: errno=%d\n%s\n",
errno, strerror(errno));
#ifdef WIN32
printf("Winsock error: %i\n", WSAGetLastError());
#endif
return 0;
}
return 1;
}
