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| -rw-r--r-- | docs/FAQ | 94 |
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@@ -1,4 +1,4 @@ -Updated: October 18, 2000 (http://curl.haxx.se/docs/faq.shtml) +Updated: October 27, 2000 (http://curl.haxx.se/docs/faq.shtml) _ _ ____ _ ___| | | | _ \| | / __| | | | |_) | | @@ -43,6 +43,8 @@ FAQ 4.5.4 "404 Not Found" 4.5.5 "405 Method Not Allowed" 4.6 Can you tell me what error code 142 means? + 4.7 How do I keep usernames and passwords secret in Curl command lines? + 4.8 I found a bug! 5. libcurl Issues 5.1 Is libcurl thread safe? @@ -63,7 +65,8 @@ FAQ cURL (or simply just 'curl') is a command line tool for getting or sending files using URL syntax. The name is a play on 'Client for URLs', originally - with URL spelled in uppercase to make it obvious it deals with URLs. + with URL spelled in uppercase to make it obvious it deals with URLs. The + fact it can also be pronounced 'see URL' also helped. Curl supports a range of common internet protocols, currently including HTTP, HTTPS, FTP, GOPHER, LDAP, DICT and FILE. @@ -76,7 +79,7 @@ FAQ transfer library. Any application is free to use libcurl, even commercial or closed-source - ones. Just make sure changes to the lib itself is made public. + ones. Just make sure changes to the lib itself are made public. 1.3 What is cURL not? @@ -97,7 +100,7 @@ FAQ or with PHP. Curl is not a single-OS program. Curl exists, compiles, builds and runs - under a long range of operating systems, including all modern Unixes, + under a wide range of operating systems, including all modern Unixes, Windows, Amiga, BeOS, OS/2, OS X, QNX etc. 1.4 When will you make curl do XXXX ? @@ -135,7 +138,7 @@ FAQ This may be because of several reasons. - 2.1.1. native linker doesn't find openssl + 2.1.1. native linker doesn't find openssl Affected platforms: Solaris (native cc compiler) @@ -157,7 +160,7 @@ FAQ Solution submitted by: Bob Allison <allisonb@users.sourceforge.net> - 2.1.2. only the libssl lib is missing + 2.1.2. only the libssl lib is missing If all include files and the libcrypto lib is present, with only the libssl being missing according to configure, this is mostly likely because @@ -194,7 +197,6 @@ FAQ brings this functionality. - 3. Usage problems 3.1. curl: (1) SSL is disabled, https: not supported @@ -325,26 +327,26 @@ FAQ RFC2616 clearly explains the return codes. I'll make a short transcript here. Go read the RFC for exact details: - 4.5.1 "400 Bad Request" + 4.5.1 "400 Bad Request" The request could not be understood by the server due to malformed syntax. The client SHOULD NOT repeat the request without modifications. - 4.5.2 "401 Unauthorized" + 4.5.2 "401 Unauthorized" The request requires user authentication. - 4.5.3 "403 Forbidden" + 4.5.3 "403 Forbidden" The server understood the request, but is refusing to fulfill it. Authorization will not help and the request SHOULD NOT be repeated. - 4.5.4 "404 Not Found" + 4.5.4 "404 Not Found" The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent. - 4.5.5 "405 Method Not Allowed" + 4.5.5 "405 Method Not Allowed" The method specified in the Request-Line is not allowed for the resource identified by the Request-URI. The response MUST include an Allow header @@ -353,9 +355,9 @@ FAQ 4.6. Can you tell me what error code 142 means? All error codes that are larger than the highest documented error code means - that curl has existed due to a timeout. There is currentl no nice way for + that curl has existed due to a timeout. There is currently no nice way for curl to abort from such a condition and that's why it gets this undocumented - error. This is planned to change in a future release. + error. This should be changed in releases after 7.4.1. 4.7. How do I keep usernames and passwords secret in Curl command lines? @@ -371,15 +373,30 @@ FAQ at least hide them from being read by human eyes, but that is not what anyone would call security. + 4.8 I found a bug! + + It is not a bug if the behaviour is documented. Read the docs first. + + If it is a problem with a binary you've downloaded or a package for your + particular platform, try contacting the person who built the package/archive + you have. + + If there is a bug, post a bug report in the Curl Bug Track System over at + http://sourceforge.net/bugs/?group_id=976 or mail a detailed bug description + to curl-bug@haxx.se. + + Always include as many details you can think of, including curl version, + operating system name and version and complete instructions how to repeat + the bug. + 5. libcurl Issues 5.1. Is libcurl thread safe? - As version seven is slowly marching in as the libcurl version to use, we - have made a serious attempt to address all places in the code where we could - forsee problems for multi-threaded programs. If your system has them, curl - will attempt to use threadsafe functions instead of non-safe ones. + We have attempted to write the entire code adjusted for multi-threaded + programs. If your system has such, curl will attempt to use threadsafe + functions instead of non-safe ones. 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, @@ -388,10 +405,11 @@ FAQ 6. License Issues Curl and libcurl are released under the MPL, the Mozilla Public License. To - get a really good answer to this or other licensing questions, you should + get a really good answer to your license conflict questions, you should study the MPL license and the license you are about to use and check for - clashes yourself. This is a brief summary for the cases we get the most - questions. (Parts of this section was enhanced by Bjorn Reese.) + clashes yourself. This section is just a brief summary for the cases we get + the most questions. (Parts of this section was much enhanced by Bjorn + Reese.) 6.1. I have a GPL program, can I use the libcurl library? @@ -427,33 +445,33 @@ FAQ 6.2. I have a closed-source program, can I use the libcurl library? - Yes, libcurl does not put any restrictions on the program that uses the - library. If you end up doing changes to the library, only those changes - must be made available, not the ones to your program. + Yes, libcurl does not put any restrictions on the program that uses the + library. If you end up doing changes to the library, only those changes must + be made available, not the ones to your program. 6.3. I have a BSD licensed program, can I use the libcurl library? - Yes, libcurl does not put any restrictions on the program that uses the - library. If you end up doing changes to the library, only those changes - must be made available, not the ones to your program. + Yes, libcurl does not put any restrictions on the program that uses the + library. If you end up doing changes to the library, only those changes must + be made available, not the ones to your program. 6.4. I have a program that uses LGPL libraries, can I use libcurl? - Yes you can. LGPL libraries don't spread to other libraries the same way - GPL ones do. + Yes you can. LGPL libraries don't spread to other libraries the same way GPL + ones do. - However, when you read paragraph (3) of the LGPL license, you'll see that - anyone - at will - may at any time convert that LGPL program into GPL. And - GPL programs can't be distributed together with MPL programs, neither with - (lib)curl source code and not as a binary. + However, when you read paragraph (3) of the LGPL license, you'll see that + anyone - at will - may at any time convert that LGPL program into GPL. And + GPL programs can't be distributed together with MPL programs, neither with + (lib)curl source code and not as a binary. 6.5. Can I modify curl/libcurl for my program and keep the changes secret? - No, you're not allowed to do that. + No, you're not allowed to do that. 6.6. Can you please change the curl/libcurl license to XXXX? - No. We carefully picked this license years ago and a large amount of - people have contributed with source code knowing that this is the license - we use. This license puts the restrictions we want on curl/libcurl and it - does not spread to other programs or libraries that use it. + No. We carefully picked this license years ago and a large amount of people + have contributed with source code knowing that this is the license we + use. This license puts the restrictions we want on curl/libcurl and it does + not spread to other programs or libraries that use it. |