return code cleanup: build, init and run-time errors

Stop the abuse of CURLE_FAILED_INIT as return code for things not being
init related by introducing two new return codes:

CURLE_NOT_BUILT_IN and CURLE_UNKNOWN_OPTION

CURLE_NOT_BUILT_IN replaces return code 4 that has been obsoleted for
several years. It is used for returning error when something is
attempted to be used but the feature/option was not enabled or
explictitly disabled at build-time. Getting this error mostly means that
libcurl needs to be rebuilt.

CURLE_FAILED_INIT is now saved and used strictly for init
failures. Getting this problem means something went seriously wrong,
like a resource shortage or similar.

CURLE_UNKNOWN_OPTION is the option formerly known as
CURLE_UNKNOWN_TELNET_OPTION (and the old name is still present,
separately defined to be removed in a very distant future). This error
code is meant to be used to return when an option is given to libcurl
that isn't known. This problem would mostly indicate a problem in the
program that uses libcurl.
This commit is contained in:
Daniel Stenberg
2011-04-05 15:14:02 +02:00
parent 8321a367ee
commit 01f05d0c75
15 changed files with 58 additions and 41 deletions

View File

@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -44,9 +44,15 @@ can be a misspelled protocol string or just a protocol libcurl has no code
for.
.IP "CURLE_FAILED_INIT (2)"
Very early initialization code failed. This is likely to be an internal error
or problem.
or problem, or a resource problem where something fundamental couldn't get
done at init time.
.IP "CURLE_URL_MALFORMAT (3)"
The URL was not properly formatted.
.IP "CURLE_NOT_BUILT_IN (4)"
A requested feature, protocol or option was not found built-in in this libcurl
due to a build-time decision. This means that a feature or option was not
enabled or explicitly disabled when libcurl was built and in order to get it
to function you have to get a rebuilt libcurl.
.IP "CURLE_COULDNT_RESOLVE_PROXY (5)"
Couldn't resolve proxy. The given proxy host could not be resolved.
.IP "CURLE_COULDNT_RESOLVE_HOST (6)"
@@ -145,9 +151,11 @@ CURLOPT_INTERFACE.
.IP "CURLE_TOO_MANY_REDIRECTS (47)"
Too many redirects. When following redirects, libcurl hit the maximum amount.
Set your limit with CURLOPT_MAXREDIRS.
.IP "CURLE_UNKNOWN_TELNET_OPTION (48)"
An option set with CURLOPT_TELNETOPTIONS was not recognized/known. Refer to
the appropriate documentation.
.IP "CURLE_UNKNOWN_OPTION (48)"
An option passed to libcurl is not recognized/known. Refer to the appropriate
documentation. This is most likely a problem in the program that uses
libcurl. The error buffer might contain more specific information about which
exact option it concerns.
.IP "CURLE_TELNET_OPTION_SYNTAX (49)"
A telnet option string was Illegally formatted.
.IP "CURLE_PEER_FAILED_VERIFICATION (51)"

View File

@@ -82,6 +82,7 @@ CURLE_LDAP_SEARCH_FAILED 7.1
CURLE_LIBRARY_NOT_FOUND 7.1 7.17.0
CURLE_LOGIN_DENIED 7.13.1
CURLE_MALFORMAT_USER 7.1 7.17.0
CURLE_NOT_BUILT_IN 7.21.5
CURLE_OK 7.1
CURLE_OPERATION_TIMEDOUT 7.10.2
CURLE_OPERATION_TIMEOUTED 7.1 7.17.0
@@ -123,6 +124,7 @@ CURLE_TFTP_NOTFOUND 7.15.0
CURLE_TFTP_PERM 7.15.0
CURLE_TFTP_UNKNOWNID 7.15.0
CURLE_TOO_MANY_REDIRECTS 7.5
CURLE_UNKNOWN_OPTION 7.21.5
CURLE_UNKNOWN_TELNET_OPTION 7.7
CURLE_UNSUPPORTED_PROTOCOL 7.1
CURLE_UPLOAD_FAILED 7.16.3