net: Dial fails on Solaris with gccgo #6828
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I don't know what is happening here, but it would be much more interesting to try this on tip, since the polling mechanism has completely changed. EINVAL is a peculiar errno value to return. The man page only suggests one possibility: that the address length argument is wrong. I don't see how that could be the case here. Labels changed: added gccgo. Owner changed to @ianlancetaylor. |
This is a guess at the problem. /1: connect(6, 0xC20082EB4C, 16, SOV_XPG4_2) Err#150 EINPROGRESS /4: accept(3, 0xC200831310, 0xC200000168, SOV_DEFAULT, 0) = 7 /4: close(7) = 0 /4: connect(6, 0xC20082EB4C, 16, SOV_XPG4_2) Err#22 EINVAL In other words, I wonder if, while a connect is in progress, the connection is accepted and closed, the attempt to complete the connect returns EINVAL. Labels changed: removed priority-triage, gccgo. |
Confirmed. This program exits with success on GNU/Linux but on Solaris fails with
"connect: Invalid argument."
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
static void
die (const char *s)
{
perror (s);
exit (EXIT_FAILURE);
}
static void *
thread (void *arg)
{
int o1, o3;
struct sockaddr_in asin;
socklen_t slen;
o1 = *(int *) arg;
slen = sizeof asin;
o3 = accept (o1, (struct sockaddr *) &asin, &slen);
if (o3 < 0)
die ("accept");
if (close (o3) < 0)
die ("close");
return NULL;
}
int
main ()
{
struct sockaddr_in sin;
int o1, o2, flags;
socklen_t slen;
pthread_t tid;
int i;
o1 = socket (AF_INET, SOCK_STREAM, 0);
if (o1 < 0)
die ("socket 1");
memset (&sin, 0, sizeof sin);
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
if (bind (o1, (struct sockaddr *) &sin, sizeof sin) < 0)
die ("bind");
if (listen (o1, 5) < 0)
die ("listen");
slen = sizeof sin;
if (getsockname (o1, (struct sockaddr *) &sin, &slen) < 0)
die ("getsockname");
o2 = socket (AF_INET, SOCK_STREAM, 0);
if (o2 < 0)
die ("socket 2");
flags = fcntl (o2, F_GETFL);
if (flags < 0)
die ("fcntl 1");
if (fcntl (o2, F_SETFL, flags | O_NONBLOCK) < 0)
die ("fcntl 2");
if (connect (o2, (struct sockaddr *) &sin, sizeof sin) >= 0)
die ("connect succeeded");
if (errno != EINPROGRESS)
die ("bad connect errno");
i = pthread_create (&tid, NULL, thread, (void *) &o1);
if (i != 0)
{
errno = i;
die ("pthread_create");
}
sleep (1);
if (connect (o2, (struct sockaddr *) &sin, sizeof sin) < 0)
die ("connect");
return 0;
}
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This issue was updated by revision 672525a. R=golang-codereviews, bradfitz, dave CC=golang-codereviews https://golang.org/cl/46160043 |
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