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44 lines
1.8 KiB
44 lines
1.8 KiB
8 months ago
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diff -up cups-2.2.6/cups/http-addrlist.c.cupsgetjobs-pollhup cups-2.2.6/cups/http-addrlist.c
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--- cups-2.2.6/cups/http-addrlist.c.cupsgetjobs-pollhup 2023-12-19 18:25:15.484637450 +0100
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+++ cups-2.2.6/cups/http-addrlist.c 2023-12-19 18:28:57.129163387 +0100
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@@ -313,6 +313,39 @@ httpAddrConnect2(
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{
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# ifdef HAVE_POLL
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DEBUG_printf(("pfds[%d].revents=%x\n", i, pfds[i].revents));
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+
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+# ifdef _WIN32
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+ if (((WSAGetLastError() == WSAEINPROGRESS) && (pfds[i].revents & POLLIN) && (pfds[i].revents & POLLOUT)) ||
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+ ((pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN|POLLOUT))))
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+# else
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+ if (((errno == EINPROGRESS) && (pfds[i].revents & POLLIN) && (pfds[i].revents & POLLOUT)) ||
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+ ((pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN|POLLOUT))))
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+# endif /* _WIN32 */
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+ {
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+ // Some systems generate POLLIN or POLLOUT together with POLLHUP when doing
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+ // asynchronous connections. The solution seems to be to use getsockopt to
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+ // check the SO_ERROR value and ignore the POLLHUP if there is no error or
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+ // the error is EINPROGRESS.
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+
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+ int sres, /* Return value from getsockopt() - 0, or -1 if error */
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+ serr; /* Option SO_ERROR value */
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+ socklen_t slen = sizeof(serr); /* Option value size */
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+
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+ sres = getsockopt(fds[i], SOL_SOCKET, SO_ERROR, &serr, &slen);
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+
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+ if (sres || serr)
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+ {
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+ pfds[i].revents |= POLLERR;
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+# ifdef DEBUG
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+ DEBUG_printf(("1httpAddrConnect2: getsockopt returned: %d with error: %s", sres, strerror(serr)));
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+# endif
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+ }
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+ else if (pfds[i].revents && (pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN | POLLOUT)))
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+ {
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+ pfds[i].revents &= ~POLLHUP;
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+ }
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+ }
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+
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if (pfds[i].revents && !(pfds[i].revents & (POLLERR | POLLHUP)))
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# else
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if (FD_ISSET(fds[i], &input_set) && !FD_ISSET(fds[i], &error_set))
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