mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 08:08:50 -05:00
59 lines
2.3 KiB
Plaintext
59 lines
2.3 KiB
Plaintext
_ _ ____ _
|
|
___| | | | _ \| |
|
|
/ __| | | | |_) | |
|
|
| (__| |_| | _ <| |___
|
|
\___|\___/|_| \_\_____|
|
|
|
|
FAQ
|
|
|
|
Problems connecting to SSL servers.
|
|
===================================
|
|
|
|
It took a very long time before I could sort out why curl had problems
|
|
to connect to certain SSL servers when using SSLeay or OpenSSL v0.9+.
|
|
The error sometimes showed up similar to:
|
|
|
|
16570:error:1407D071:SSL routines:SSL2_READ:bad mac decode:s2_pkt.c:233:
|
|
|
|
It turned out to be because many older SSL servers don't deal with SSLv3
|
|
requests properly. To correct this problem, tell curl to select SSLv2 from
|
|
the command line (-2/--sslv2).
|
|
|
|
I have also seen examples where the remote server didn't like the SSLv2
|
|
request and instead you had to force curl to use SSLv3 with -3/--sslv3.
|
|
|
|
Does curl support resume?
|
|
=========================
|
|
|
|
Yes. Both ways on FTP, download ways on HTTP.
|
|
|
|
Is libcurl thread safe?
|
|
=======================
|
|
|
|
Yes, as far as curl's own code goes. It does use system calls that often
|
|
aren't thread safe in most environments, such as gethostbyname().
|
|
|
|
I am very interested in once and for all getting some kind of report or
|
|
README file from those who have used libcurl in a threaded environment,
|
|
since I haven't and I get this question more and more frequently!
|
|
|
|
Why doesn't my posting using -F work?
|
|
=====================================
|
|
|
|
You can't simply use -F or -d at your choice. The web server that will
|
|
receive your post assumes one of the formats. If the form you're trying to
|
|
"fake" sets the type to 'multipart/form-data', than and only then you must
|
|
use the -F type. In all the most common cases, you should use -d which then
|
|
causes a posting with the type 'application/x-www-form-urlencoded'.
|
|
|
|
Does curl support custom FTP commands?
|
|
======================================
|
|
|
|
Yes it does, you can tell curl to perform optional commands both before
|
|
and/or after a file transfer. Study the -Q/--quote option.
|
|
|
|
Since curl is used for file transfers, you don't use curl to just perform
|
|
ftp commands without transfering anything. Therefore you must always specify
|
|
a URL to transfer to/from even when doing custom FTP commands.
|
|
|
|
|