Package: wget
Version: 1.10.2-2
This is easy to reproduce, just start downloading a largish file with a
--read-timeout of a few seconds, and right in the middle drop traffic from that
server using iptables.
Stracing an HTTP connection shows nice timeout:
20:34:04 read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
16384) = 1398
20:34:04 write(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
1398) = 1398
20:34:04 select(5, [4], NULL, NULL, {15, 0}) = 1 (in [4], left {14, 988000})
20:34:04 read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
16384) = 1398
20:34:04 write(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
1398) = 1398
20:34:04 select(5, [4], NULL, NULL, {15, 0}) = 0 (Timeout)
20:34:19 close(4) = 0
While HTTPS just sits there forever, waiting:
20:28:38 read(4, "\30.\3051\330\307L\301%\206\312\347\326\277i&\250[\025"...,
3852) = 3852
20:28:39 write(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 4096
20:28:39 write(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
12288) = 12288
20:28:39 select(5, [4], NULL, NULL, {15, 0}) = 1 (in [4], left {15, 0})
20:28:39 read(4, "\27\3\0011p", 5) = 5
20:28:39 read(4, "\314\247\266\315\235?K\210\217\317\0014F\\\371J\273*\252"...,
12656) = 1735
20:28:39 read(4, "xT\263pU=\354~W\225\344\237\271\237a%\22\327\326)D\231"...,
10921) = 1398
20:28:39 read(4, "]\303\254\251\354\223#c\304\247E\260\33\326\362\376\374"...,
9523) = 1398
20:28:39 read(4,
Probably the timeout is not implemented in the routine which uses libssl...
Since the TCP internal timeout for an ESTABLISHED connection is very very large
as I remember, this can be very bad for situations where wget is executed
non-interactively (in my case, I update my dyndns entry using wget and reset my
wireless card in a loop, in case something bad happens to the internet
connection, which worked nice, until wget hanged this afternoon).
Marcin
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Marcin Owsiany <[EMAIL PROTECTED]> http://marcin.owsiany.pl/
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