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45 Commits

Author SHA1 Message Date
Daniel Stenberg
6fdbb01194 Lots of work and analysis by "xbx___" in bug #1431750 
(http://curl.haxx.se/bug/view.cgi?id=1431750) helped me identify and fix two
different but related bugs:

1) Removing an easy handle from a multi handle before the transfer is done
   could leave a connection in the connection cache for that handle that is
   in a state that isn't suitable for re-use. A subsequent re-use could then
   read from a NULL pointer and segfault.

2) When an easy handle was removed from the multi handle, there could be an
   outstanding c-ares DNS name resolve request. When the response arrived,
   it caused havoc since the connection struct it "belonged" to could've
   been freed already.

Now Curl_done() is called when an easy handle is removed from a multi handle
pre-maturely (that is, before the transfer was complteted). Curl_done() also
makes sure to cancel all (if any) outstanding c-ares requests.
 2006-02-23 12:20:48 +00:00
Yang Tse
b15f3bb969 Undo last changes 2005-12-11 23:37:58 +00:00
Yang Tse
36485e56ed Fix compiler warning and compatibility issue with the type of the parameter used in getnameinfo() to receive the length of the sockaddr struct. 2005-12-11 12:03:01 +00:00
Daniel Stenberg
9b3c2b6ae2 kill warnings 2005-04-04 21:23:04 +00:00
Gisle Vanem
0b45431139 hostthre.c: destroy_thread_data() made public. Called 
from url.c: Curl_disconnect().
 2005-04-04 12:30:03 +00:00
Daniel Stenberg
6a2e21ec8c FTP code turned into state machine. Not completely yet, but a good start. 
The tag 'before_ftp_statemachine' was set just before this commit in case
of future need.
 2005-02-09 13:06:40 +00:00
Gisle Vanem
d118312922 Curl_addrinfo?_callback() and addrinfo_callback() now returns 
CURLE_OK or CURLE_OUT_OF_MEMORY.
Add typecast in hostares.c.
 2005-02-08 12:36:13 +00:00
Daniel Stenberg
043d70fcdf Use plain structs and not typedef'ed ones in the hash and linked-list code. 2005-01-25 00:06:29 +00:00
Daniel Stenberg
785bad388b Gisle cleaned up remaining host resolve re-org issues 2004-06-24 14:39:52 +00:00
Daniel Stenberg
5e34f3dc01 made the Curl_he2ai() take the port number as an int intead, to avoid lots 
of typecasts all over
 2004-06-24 10:43:50 +00:00
Daniel Stenberg
c39858aac0 Source cleanups. The major one being that we now _always_ use a Curl_addrinfo 
linked list for name resolved data, even on hosts/systems with only IPv4
stacks as this simplifies a lot of code.
 2004-06-24 07:43:48 +00:00
Daniel Stenberg
8d76d4016d removed trailing whitespace 2004-06-10 11:56:02 +00:00
Daniel Stenberg
9f92657f76 Gisle corrected two comments 2004-06-10 11:55:37 +00:00
Daniel Stenberg
9f341f9ce5 Gisle Vanem's improved verbose output and timeout handling when connecting to 
a host name that resolves to multiple IP addresses.
 2004-06-10 11:06:21 +00:00
Daniel Stenberg
245e3122df Made defines instead of plain numbers for the Curl_resolv() return code to 
make the code easier to read
 2004-04-26 14:18:00 +00:00
Daniel Stenberg
2370d4fa02 Curl_ip2addr() now takes an in_addr_t argument instead to prevent compiler 
warnings
 2004-04-26 12:02:33 +00:00
Daniel Stenberg
648e82f05d Major hostip.c cleanup and split into multiple files and easier #ifdef 
usage.
 2004-04-26 07:20:11 +00:00
Daniel Stenberg
7ea837a18c adjusted to the new dns cache function to hide more hostip internals 2004-03-30 13:02:31 +00:00
Daniel Stenberg
053f6c85ef updated year in the copyright string 2004-01-07 09:19:33 +00:00
Daniel Stenberg
3788f25eac added a library-wide interface for doing dns cache pruning, and no longer 
make the pruning at each name lookup, only in Curl_done().
 2003-12-15 17:33:49 +00:00
Daniel Stenberg
343291ce37 Based on a patch provided by Siddhartha Prakash Jain. In Curl_resolv() when 
my_getaddrinfo() has been called (and wait has been set to TRUE), we check
if the name already is resolved and if so don't return wait status to the
parent. This can happen with IP-only names.
 2003-10-04 14:50:45 +00:00
Daniel Stenberg
b73612392d ares awareness/usage/support added. If configure --enable-ares is used, we 
build libcurl to use ares for asynch name resolves.
 2003-08-05 14:40:59 +00:00
Daniel Stenberg
308bc9d919 use CURLDEBUG instead of MALLOCDEBUG for preprocessor conditions 2003-06-26 11:22:12 +00:00
Daniel Stenberg
e615d117a0 Setup and use CURL_INADDR_NONE all over instead of INADDR_NONE. We setup 
the define accordingly in the hostip.h header to work nicely all over.
 2003-05-13 12:12:17 +00:00
Jean-Philippe Barette-LaPierre
beb13a1d3e added the sharing of DNS cache 2003-02-04 23:48:46 +00:00
Daniel Stenberg
f26a338a54 copyright year update in the source header 2003-01-16 21:08:12 +00:00
Daniel Stenberg
7df5677b46 fixed Curl_freeaddrinfo() to only free addrinfo, and added Curl_freednsinfo() 
for freeing single dns cache entries
 2002-11-26 09:41:54 +00:00
Daniel Stenberg
66eb98bb0a unlock dns cache entries with a function call instead of a variable fiddle 2002-11-11 22:36:00 +00:00
Daniel Stenberg
2cff251863 Curl_resolv() now returns a different struct, and it contains a reference 
counter so that the caller needs to decrease that counter when done with
the returned data.

If compiled with MALLOCDEBUG I've added some extra checking that the counter
is decreased before a handle is closed etc.
 2002-11-05 10:51:41 +00:00
Daniel Stenberg
ba4e69bebc updated source code boilerplate/header 2002-09-03 11:52:59 +00:00
Daniel Stenberg
8927ddec16 In order to not get problems with DNS cache pruning, we no longer store 
any name resolved data in any curl handle struct. That way, we won't mind
if the cache entries are pruned for the next time we need them. We'll just
resolve them again instead.

This changes the Curl_resolv() proto. It modifies the SessionHandle struct
but perhaps most importantly, it'll make the internals somewhat dependent
on the DNS cache not being disabled as that will cripple operations somewhat.
Especially for persistant connections.
 2002-04-25 19:00:57 +00:00
Daniel Stenberg
974f314f57 copyright string (year) update 2002-03-19 07:54:55 +00:00
Sterling Hughes
8d7f402efb Make cach'ing work with threads now, there are now three cases: 
- Use a global dns cache (via setting the tentatively named,
    CURLOPT_DNS_USE_GLOBAL_CACHE option to true)
    - Use a per-handle dns cache, by default
    - Use a pooled dns cache when in the "multi" interface
 2002-01-07 20:52:32 +00:00
Daniel Stenberg
6de7dc5879 Sterling Hughes' provided initial DNS cache source code. 2002-01-03 10:22:59 +00:00
Daniel Stenberg
5d9ae88f58 getaddrinfo() cleanups 2001-10-04 13:25:12 +00:00
Daniel Stenberg
51ca5fcbe0 major connecting updates 2001-10-02 09:40:06 +00:00
Daniel Stenberg
48dc74aecc more transparant support for IPv6 name resolving 2001-09-28 07:05:26 +00:00
Daniel Stenberg
0ece1b5c34 Major rename and redesign of the internal "backbone" structs. Details will 
be posted in a minute to the libcurl list.
 2001-08-30 22:48:34 +00:00
Daniel Stenberg
f6e2bfd464 Jun-ichiro itojun Hagino's IPv6 adjustments 2001-02-05 23:04:44 +00:00
Daniel Stenberg
4031104404 Internal symbols that aren't static are now prefixed with 'Curl_' 2001-01-05 10:11:41 +00:00
Daniel Stenberg
24dee483e9 dual-license fix 2001-01-03 09:29:33 +00:00
Daniel Stenberg
aa8a2fbde3 GetHost() changed function arguments 2000-09-21 08:47:48 +00:00
Daniel Stenberg
1ef3600a07 haxx.nu => haxx.se 2000-06-20 15:31:26 +00:00
Daniel Stenberg
a0ce95e155 David LeBlanc's fixes! 2000-05-29 22:51:13 +00:00
Daniel Stenberg
ae1912cb0d Initial revision 1999-12-29 14:20:26 +00:00