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3.14 added, javascript support

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Daniel Stenberg 2002-05-21 13:53:32 +00:00
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Updated: May 15, 2002 (http://curl.haxx.se/docs/faq.shtml) Updated: May 21, 2002 (http://curl.haxx.se/docs/faq.shtml)
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3.3 Why doesn't my posting using -F work? 3.3 Why doesn't my posting using -F work?
3.4 How do I tell curl to run custom FTP commands? 3.4 How do I tell curl to run custom FTP commands?
3.5 How can I disable the Pragma: nocache header? 3.5 How can I disable the Pragma: nocache header?
3.6 Does curl support javascript, ASP, XML, XHTML or HTML version Y? 3.6 Does curl support ASP, XML, XHTML or HTML version Y?
3.7 Can I use curl to delete/rename a file through FTP? 3.7 Can I use curl to delete/rename a file through FTP?
3.8 How do I tell curl to follow HTTP redirects? 3.8 How do I tell curl to follow HTTP redirects?
3.9 How do I use curl in my favourite programming language? 3.9 How do I use curl in my favourite programming language?
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3.11 How do I POST with a different Content-Type? 3.11 How do I POST with a different Content-Type?
3.12 Why do FTP specific features over HTTP proxy fail? 3.12 Why do FTP specific features over HTTP proxy fail?
3.13 Why does my single/double quotes fail? 3.13 Why does my single/double quotes fail?
3.14 Does curl support javascript or pac (automated proxy config)?
4. Running Problems 4. Running Problems
4.1 Problems connecting to SSL servers. 4.1 Problems connecting to SSL servers.
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the -H/--header option. By adding a header with empty contents you safely the -H/--header option. By adding a header with empty contents you safely
disable that one. Use -H "Pragma:" to disable that specific header. disable that one. Use -H "Pragma:" to disable that specific header.
3.6. Does curl support javascript, ASP, XML, XHTML or HTML version Y? 3.6. Does curl support ASP, XML, XHTML or HTML version Y?
To curl, all contents are alike. It doesn't matter how the page was To curl, all contents are alike. It doesn't matter how the page was
generated. It may be ASP, PHP, Perl, shell-script, SSI or plain generated. It may be ASP, PHP, Perl, shell-script, SSI or plain
HTML-files. There's no difference to curl and it doesn't even know what kind HTML-files. There's no difference to curl and it doesn't even know what kind
of language that generated the page. of language that generated the page.
Javascript is slightly different since that is code embedded in the HTML See also item 3.13 regarding javascript.
that is sent for the client to interpret and curl has no javascript
interpreter.
3.7. Can I use curl to delete/rename a file through FTP? 3.7. Can I use curl to delete/rename a file through FTP?
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Remember that curl works and runs on more operating systems than most single Remember that curl works and runs on more operating systems than most single
individuals have ever tried. individuals have ever tried.
3.14 Does curl support javascript or pac (automated proxy config)?
Many web pages do magic stuff using embedded javascript. Curl and libcurl
have no built-in support for that, so it will be treated just like any other
contents.
.pac files are a netscape invention and are sometimes used by organizations
to allow them to differentiate which proxies to use. The .pac contents is
just a javascript program that gets invoked by the browser and that returns
the name of the proxy to connect to. Since curl doesn't support javascript,
it can't support .pac proxy configuration either.
Some work-arounds usually suggested to overcome this javascript dependency:
- Depending on the javascript complexity, write up a script that
translates it to another language and execute that.
- Read the javascript code and rewrite the same logic in another language.
- Implement a javascript interpreted, people have successfully used the
Mozilla javascript engine in the past.
- Ask your admins to stop this, for a static proxy setup or similar.
4. Running Problems 4. Running Problems