Dobes Vandermeer
2009-02-22 07:27:45 UTC
Currently when using cygwin (other software works fine) to communicate over
the network, some network connections will hang. This affects rsync, ssh,
and wget (so far).
I ran an strace on wget http://www.google.com and it hangs here (ssh hangs
in the same place):
Connecting to www.google.com|74.125.19.103|:80... 1870 2067824 [main] wget
214768 fhandler_console::write: 50 = write_c
onsole (,..50)
3637 2071461 [main] wget 214768 cygwin_socket: socket (2, 1, 0)
3889 2075350 [main] wget 214768 fdsock: reset socket inheritance
2096 2077446 [main] wget 214768 build_fh_pc: fh 0x61169E10
1749 2079195 [main] wget 214768 fhandler_base::set_flags: flags 0x10002,
supplied_bin 0x0
1920 2081115 [main] wget 214768 fhandler_base::set_flags: O_TEXT/O_BINARY
set in flags 0x10000
1825 2082940 [main] wget 214768 fhandler_base::set_flags: filemode set to
binary
1968 2084908 [main] wget 214768 fdsock: fd 3, name '', soc 0x1FC
1763 2086671 [main] wget 214768 cygwin_socket: 3 = socket (2, 1, 0)
2374 2089045 [main] wget 214768 sig_send: sendsig 0x13C, pid 214768, signal
-34, its_me 1
1844 2090889 [main] wget 214768 sig_send: wakeup 0x1F4
2028 2092917 [main] wget 214768 sig_send: Waiting for pack.wakeup 0x1F4
1818 2094735 [sig] wget 214768 wait_sig: signalling pack.wakeup 0x1F4
1961 2096696 [main] wget 214768 sig_send: returning 0x0 from sending signal
-34
1801 2098497 [main] wget 214768 fhandler_socket::ioctl: socket is now
nonblocking
2020 2100517 [main] wget 214768 fhandler_socket::ioctl: 0 = ioctl_socket
(8004667E, 27C43C)
3710 2104227 [main] wget 214768 __set_errno: void __set_winsock_errno(const
char*, int):234 val 119
2775 2107002 [main] wget 214768 __set_winsock_errno: connect:788 - winsock
error 10036 -> errno 119
2719 2109721 [main] wget 214768 cygwin_select: 4, 0x0, 0x27C3F0, 0x27C3D0,
0x0
2212 2111933 [main] wget 214768 dtable::select_write: fd 3
1774 2113707 [main] wget 214768 dtable::select_except: fd 3
2143 2115850 [main] wget 214768 cygwin_select: to NULL, ms FFFFFFFF
1763 2117613 [main] wget 214768 cygwin_select: sel.always_ready 0
1953 2119566 [main] wget 214768 start_thread_socket: Handle 0x1FC
1754 2121320 [main] wget 214768 start_thread_socket: Added to writefds
1931 2123251 [main] wget 214768 start_thread_socket: Added to exceptfds
2250 2125501 [main] wget 214768 start_thread_socket: opened new socket
0x208
1923 2127424 [main] wget 214768 start_thread_socket: exitsock 0x208
1810 2129234 [main] wget 214768 start_thread_socket: stuff_start 0x27C354
2635 2131869 [select_socket] wget 214768 cygthread::stub: thread
'select_socket', id 0x3421C, stack_ptr 0x1B2FCDA0
1790 2133659 [select_socket] wget 214768 thread_socket: stuff_start
0xF5582C
3188 2136847 [select_socket] wget 214768 thread_socket: Win32 select
returned 1
2146 2138993 [select_socket] wget 214768 thread_socket: s 0xF527E8, testing
fd 3 ()
5712 2144705 [main] wget 214768 select_stuff::wait: m 2, ms 4294967295
5 2144710 [select_socket] wget 214768 thread_socket: write_ready
3987 2148697 [main] wget 214768 select_stuff::wait: woke up. wait_ret 1.
verifying
2044 2150741 [main] wget 214768 select_stuff::wait: gotone 1
2042 2152783 [main] wget 214768 select_stuff::wait: returning 0
1853 2154636 [main] wget 214768 select_stuff::cleanup: calling cleanup
routines
2033 2156669 [main] wget 214768 socket_cleanup: si 0xF52818 si->thread
0x61106F30
2254 2158923 [main] wget 214768 socket_cleanup: sent a byte to exitsock
0x208, res -1
2038 2160961 [main] wget 214768 socket_cleanup: reading a byte from
exitsock 0x208
For reasons I can't really guess at, wget works 3/4 times, ssh only 1/3
times. I can get through by pressing CTRL-C and re-running the command
(sometimes I have to do this several times), except with rsync which seems
to trap the CTRL-C and I have to kill it using the Task Manager before it
will stop and I can try again. This also affects ssh-add which seems to
hang trying to connect to the ssh-agent on localhost, so it's not related to
connecting to other machines.
This is something that started happening recently, in the last few weeks.
Windows Update has run a few times and I thought it may have updated my
network driver; however, after I observed this problem I used Windows Update
to install a network card driver update, which didn't fix (or worsen) the
problem. Also, the fact that this affects connections to localhost, which
theoretically would bypass the network card driver, seems to discredit the
"network card driver" theory and cast suspicion on the entire networking
stack instead. This only affects cygwin, so far, though ... so maybe it's
something funny cygwin is doing.
I'm running Windows Vista Home Basic 64-bit, the network card is a Realtek
PCI-E GB NIC.
Any ideas? I'm not really sure where to go next with this, my best idea
right now is to try reinstalling windows since reinstalling cygwin didn't
fix it... any help will be appreciated!
the network, some network connections will hang. This affects rsync, ssh,
and wget (so far).
I ran an strace on wget http://www.google.com and it hangs here (ssh hangs
in the same place):
Connecting to www.google.com|74.125.19.103|:80... 1870 2067824 [main] wget
214768 fhandler_console::write: 50 = write_c
onsole (,..50)
3637 2071461 [main] wget 214768 cygwin_socket: socket (2, 1, 0)
3889 2075350 [main] wget 214768 fdsock: reset socket inheritance
2096 2077446 [main] wget 214768 build_fh_pc: fh 0x61169E10
1749 2079195 [main] wget 214768 fhandler_base::set_flags: flags 0x10002,
supplied_bin 0x0
1920 2081115 [main] wget 214768 fhandler_base::set_flags: O_TEXT/O_BINARY
set in flags 0x10000
1825 2082940 [main] wget 214768 fhandler_base::set_flags: filemode set to
binary
1968 2084908 [main] wget 214768 fdsock: fd 3, name '', soc 0x1FC
1763 2086671 [main] wget 214768 cygwin_socket: 3 = socket (2, 1, 0)
2374 2089045 [main] wget 214768 sig_send: sendsig 0x13C, pid 214768, signal
-34, its_me 1
1844 2090889 [main] wget 214768 sig_send: wakeup 0x1F4
2028 2092917 [main] wget 214768 sig_send: Waiting for pack.wakeup 0x1F4
1818 2094735 [sig] wget 214768 wait_sig: signalling pack.wakeup 0x1F4
1961 2096696 [main] wget 214768 sig_send: returning 0x0 from sending signal
-34
1801 2098497 [main] wget 214768 fhandler_socket::ioctl: socket is now
nonblocking
2020 2100517 [main] wget 214768 fhandler_socket::ioctl: 0 = ioctl_socket
(8004667E, 27C43C)
3710 2104227 [main] wget 214768 __set_errno: void __set_winsock_errno(const
char*, int):234 val 119
2775 2107002 [main] wget 214768 __set_winsock_errno: connect:788 - winsock
error 10036 -> errno 119
2719 2109721 [main] wget 214768 cygwin_select: 4, 0x0, 0x27C3F0, 0x27C3D0,
0x0
2212 2111933 [main] wget 214768 dtable::select_write: fd 3
1774 2113707 [main] wget 214768 dtable::select_except: fd 3
2143 2115850 [main] wget 214768 cygwin_select: to NULL, ms FFFFFFFF
1763 2117613 [main] wget 214768 cygwin_select: sel.always_ready 0
1953 2119566 [main] wget 214768 start_thread_socket: Handle 0x1FC
1754 2121320 [main] wget 214768 start_thread_socket: Added to writefds
1931 2123251 [main] wget 214768 start_thread_socket: Added to exceptfds
2250 2125501 [main] wget 214768 start_thread_socket: opened new socket
0x208
1923 2127424 [main] wget 214768 start_thread_socket: exitsock 0x208
1810 2129234 [main] wget 214768 start_thread_socket: stuff_start 0x27C354
2635 2131869 [select_socket] wget 214768 cygthread::stub: thread
'select_socket', id 0x3421C, stack_ptr 0x1B2FCDA0
1790 2133659 [select_socket] wget 214768 thread_socket: stuff_start
0xF5582C
3188 2136847 [select_socket] wget 214768 thread_socket: Win32 select
returned 1
2146 2138993 [select_socket] wget 214768 thread_socket: s 0xF527E8, testing
fd 3 ()
5712 2144705 [main] wget 214768 select_stuff::wait: m 2, ms 4294967295
5 2144710 [select_socket] wget 214768 thread_socket: write_ready
3987 2148697 [main] wget 214768 select_stuff::wait: woke up. wait_ret 1.
verifying
2044 2150741 [main] wget 214768 select_stuff::wait: gotone 1
2042 2152783 [main] wget 214768 select_stuff::wait: returning 0
1853 2154636 [main] wget 214768 select_stuff::cleanup: calling cleanup
routines
2033 2156669 [main] wget 214768 socket_cleanup: si 0xF52818 si->thread
0x61106F30
2254 2158923 [main] wget 214768 socket_cleanup: sent a byte to exitsock
0x208, res -1
2038 2160961 [main] wget 214768 socket_cleanup: reading a byte from
exitsock 0x208
For reasons I can't really guess at, wget works 3/4 times, ssh only 1/3
times. I can get through by pressing CTRL-C and re-running the command
(sometimes I have to do this several times), except with rsync which seems
to trap the CTRL-C and I have to kill it using the Task Manager before it
will stop and I can try again. This also affects ssh-add which seems to
hang trying to connect to the ssh-agent on localhost, so it's not related to
connecting to other machines.
This is something that started happening recently, in the last few weeks.
Windows Update has run a few times and I thought it may have updated my
network driver; however, after I observed this problem I used Windows Update
to install a network card driver update, which didn't fix (or worsen) the
problem. Also, the fact that this affects connections to localhost, which
theoretically would bypass the network card driver, seems to discredit the
"network card driver" theory and cast suspicion on the entire networking
stack instead. This only affects cygwin, so far, though ... so maybe it's
something funny cygwin is doing.
I'm running Windows Vista Home Basic 64-bit, the network card is a Realtek
PCI-E GB NIC.
Any ideas? I'm not really sure where to go next with this, my best idea
right now is to try reinstalling windows since reinstalling cygwin didn't
fix it... any help will be appreciated!
--
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