generic-library/curl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Added signal-based resolver timeout issue

Browse Source
This commit is contained in:
Dan Fandrich 2008-10-14 23:52:36 +00:00
parent 2f2ed4e40e
commit 9b3f863cf5
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
docs/TODO
View File

@ -18,6 +18,7 @@
1.4 Get IP address 1.4 Get IP address
1.5 c-ares ipv6 1.5 c-ares ipv6
1.6 configure-based info in public headers 1.6 configure-based info in public headers
1.7 signal-based resolver timeouts
2. libcurl - multi interface 2. libcurl - multi interface
2.1 More non-blocking 2.1 More non-blocking
@ -161,6 +162,18 @@
The remaining problems to solve involve the platforms that can't run The remaining problems to solve involve the platforms that can't run
configure. configure.
1.7 signal-based resolver timeouts
libcurl built without an asynchronous resolver library uses alarm() to time
out DNS lookups. When a timeout occurs, this causes libcurl to jump from the
signal handler back into the library with a sigsetjmp, which effectively
causes libcurl to continue running within the signal handler. This is
non-portable and could cause problems on some platforms. A discussion on the
problem is available at http://curl.haxx.se/mail/lib-2008-09/0197.html
Also, alarm() provides timeout resolution only to the nearest second. alarm
ought to be replaced by setitimer on systems that support it.
2. libcurl - multi interface 2. libcurl - multi interface
2.1 More non-blocking 2.1 More non-blocking