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Updated cURL version.

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This commit is contained in:
Asher Baker
2013-03-17 22:23:20 +00:00
parent 986aa2a477
commit 63175aa3cb
1510 changed files with 213259 additions and 161405 deletions
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extensions/curl/curl-src/docs/MANUAL
+120 -59
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@@ -19,7 +19,7 @@ SIMPLE USAGE
curl http://www.weirdserver.com:8000/
Get a list of a directory of an FTP site:
Get a directory listing of an FTP site:
curl ftp://cool.haxx.se/
@@ -46,7 +46,7 @@ SIMPLE USAGE
Get a file from an SSH server using SCP using a private key to authenticate:
curl -u username: --key ~/.ssh/id_dsa --pubkey ~/.ssh/id_dsa.pub \
scp://shell.example.com/~/personal.txt
scp://shell.example.com/~/personal.txt
Get the main page from an IPv6 web server:
@@ -54,7 +54,7 @@ SIMPLE USAGE
DOWNLOAD TO A FILE
Get a web page and store in a local file:
Get a web page and store in a local file with a specific name:
curl -o thatpage.html http://www.netscape.com/
@@ -113,9 +113,10 @@ USING PASSWORDS
ones out of the ones that the server accepts for the given URL, by using
--anyauth.
NOTE! Since HTTP URLs don't support user and password, you can't use that
style when using Curl via a proxy. You _must_ use the -u style fetch
during such circumstances.
NOTE! According to the URL specification, HTTP URLs can not contain a user
and password, so that style will not work when using curl via a proxy, even
though curl allows it at other times. When using a proxy, you _must_ use
the -u style for user and password.
HTTPS
@@ -123,11 +124,17 @@ USING PASSWORDS
PROXY
Get an ftp file using a proxy named my-proxy that uses port 888:
curl supports both HTTP and SOCKS proxy servers, with optional authentication.
It does not have special support for FTP proxy servers since there are no
standards for those, but it can still be made to work with many of them. You
can also use both HTTP and SOCKS proxies to transfer files to and from FTP
servers.
Get an ftp file using an HTTP proxy named my-proxy that uses port 888:
curl -x my-proxy:888 ftp://ftp.leachsite.com/README
Get a file from a HTTP server that requires user and password, using the
Get a file from an HTTP server that requires user and password, using the
same proxy as above:
curl -u user:passwd -x my-proxy:888 http://www.get.this/
@@ -136,14 +143,36 @@ PROXY
curl -U user:passwd -x my-proxy:888 http://www.get.this/
A comma-separated list of hosts and domains which do not use the proxy can
be specified as:
curl --noproxy localhost,get.this -x my-proxy:888 http://www.get.this/
If the proxy is specified with --proxy1.0 instead of --proxy or -x, then
curl will use HTTP/1.0 instead of HTTP/1.1 for any CONNECT attempts.
curl also supports SOCKS4 and SOCKS5 proxies with --socks4 and --socks5.
See also the environment variables Curl support that offer further proxy
See also the environment variables Curl supports that offer further proxy
control.
Most FTP proxy servers are set up to appear as a normal FTP server from the
client's perspective, with special commands to select the remote FTP server.
curl supports the -u, -Q and --ftp-account options that can be used to
set up transfers through many FTP proxies. For example, a file can be
uploaded to a remote FTP server using a Blue Coat FTP proxy with the
options:
curl -u "[email protected] Proxy-Username:Remote-Pass" \
--ftp-account Proxy-Password --upload-file local-file \
ftp://my-ftp.proxy.server:21/remote/upload/path/
See the manual for your FTP proxy to determine the form it expects to set up
transfers, and curl's -v option to see exactly what curl is sending.
RANGES
With HTTP 1.1 byte-ranges were introduced. Using this, a client can request
HTTP 1.1 introduced byte-ranges. Using this, a client can request
to get only one or more subparts of a specified document. Curl supports
this with the -r flag.
@@ -160,7 +189,7 @@ RANGES
Get the first 100 bytes of a document using FTP:
curl -r 0-99 ftp://www.get.this/README
curl -r 0-99 ftp://www.get.this/README
UPLOADING
@@ -174,9 +203,9 @@ UPLOADING
curl -T uploadfile -u user:passwd ftp://ftp.upload.com/myfile
Upload a local file to the remote site, and use the local file name remote
too:
Upload a local file to the remote site, and use the local file name at the remote
site too:
curl -T uploadfile -u user:passwd ftp://ftp.upload.com/
Upload a local file to get appended to the remote file:
@@ -191,14 +220,14 @@ UPLOADING
HTTP
Upload all data on stdin to a specified http site:
Upload all data on stdin to a specified HTTP site:
curl -T - http://www.upload.com/myfile
Note that the http server must have been configured to accept PUT before
Note that the HTTP server must have been configured to accept PUT before
this can be done successfully.
For other ways to do http data upload, see the POST section below.
For other ways to do HTTP data upload, see the POST section below.
VERBOSE / DEBUG
@@ -215,7 +244,7 @@ VERBOSE / DEBUG
this:
curl --trace trace.txt www.haxx.se
DETAILED INFORMATION
@@ -261,7 +290,7 @@ POST (HTTP)
The 'variable' names are the names set with "name=" in the <input> tags, and
the data is the contents you want to fill in for the inputs. The data *must*
be properly URL encoded. That means you replace space with + and that you
write weird letters with %XX where XX is the hexadecimal representation of
replace weird letters with %XX where XX is the hexadecimal representation of
the letter's ASCII code.
Example:
@@ -300,7 +329,7 @@ POST (HTTP)
If the content-type is not specified, curl will try to guess from the file
extension (it only knows a few), or use the previously specified type (from
an earlier file if several files are specified in a list) or else it will
using the default type 'text/plain'.
use the default type 'application/octet-stream'.
Emulate a fill-in form with -F. Let's say you fill in three fields in a
form. One field is a file name which to post, one field is your name and one
@@ -317,12 +346,12 @@ POST (HTTP)
To send two files in one post you can do it in two ways:
1. Send multiple files in a single "field" with a single field name:
curl -F "[email protected],cat.gif"
2. Send two fields with two field names:
curl -F "doc[email protected]" -F "catpicture=@cat.gif"
curl -F "pictures[email protected],cat.gif"
2. Send two fields with two field names:
curl -F "[email protected]" -F "[email protected]"
To send a field value literally without interpreting a leading '@'
or '<', or an embedded ';type=', use --form-string instead of
@@ -333,8 +362,8 @@ POST (HTTP)
REFERRER
A HTTP request has the option to include information about which address
that referred to actual page. Curl allows you to specify the
An HTTP request has the option to include information about which address
referred it to the actual page. Curl allows you to specify the
referrer to be used on the command line. It is especially useful to
fool or trick stupid servers or CGI scripts that rely on that information
being available or contain certain data.
@@ -345,7 +374,7 @@ REFERRER
USER AGENT
A HTTP request has the option to include information about the browser
An HTTP request has the option to include information about the browser
that generated the request. Curl allows it to be specified on the command
line. It is especially useful to fool or trick stupid servers or CGI
scripts that only accept certain browsers.
@@ -504,7 +533,7 @@ CONFIG FILE
can also specify the long options without the dashes to make it more
readable. You can separate the options and the parameter with spaces, or
with = or :. Comments can be used within the file. If the first letter on a
line is a '#'-letter the rest of the line is treated as a comment.
line is a '#'-symbol the rest of the line is treated as a comment.
If you want the parameter to contain spaces, you must enclose the entire
parameter within double quotes ("). Within those quotes, you specify a
@@ -585,21 +614,21 @@ SFTP and SCP and PATH NAMES
FTP and firewalls
The FTP protocol requires one of the involved parties to open a second
connection as soon as data is about to get transfered. There are two ways to
connection as soon as data is about to get transferred. There are two ways to
do this.
The default way for curl is to issue the PASV command which causes the
server to open another port and await another connection performed by the
client. This is good if the client is behind a firewall that don't allow
client. This is good if the client is behind a firewall that doesn't allow
incoming connections.
curl ftp.download.com
If the server for example, is behind a firewall that don't allow connections
on other ports than 21 (or if it just doesn't support the PASV command), the
If the server, for example, is behind a firewall that doesn't allow connections
on ports other than 21 (or if it just doesn't support the PASV command), the
other way to do it is to use the PORT command and instruct the server to
connect to the client on the given (as parameters to the PORT command) IP
number and port.
connect to the client on the given IP number and port (as parameters to the
PORT command).
The -P flag to curl supports a few different options. Your machine may have
several IP-addresses and/or network interfaces and curl allows you to select
@@ -657,8 +686,8 @@ HTTPS
If you neglect to specify the password on the command line, you will be
prompted for the correct password before any data can be received.
Many older SSL-servers have problems with SSLv3 or TLS, that newer versions
of OpenSSL etc is using, therefore it is sometimes useful to specify what
Many older SSL-servers have problems with SSLv3 or TLS, which newer versions
of OpenSSL etc use, therefore it is sometimes useful to specify what
SSL-version curl should use. Use -3, -2 or -1 to specify that exact SSL
version to use (for SSLv3, SSLv2 or TLSv1 respectively):
@@ -667,29 +696,38 @@ HTTPS
Otherwise, curl will first attempt to use v3 and then v2.
To use OpenSSL to convert your favourite browser's certificate into a PEM
formatted one that curl can use, do something like this (assuming netscape,
but IE is likely to work similarly):
formatted one that curl can use, do something like this:
You start with hitting the 'security' menu button in netscape.
In Netscape, you start with hitting the 'Security' menu button.
Select 'certificates->yours' and then pick a certificate in the list
Select 'certificates->yours' and then pick a certificate in the list
Press the 'export' button
Press the 'Export' button
enter your PIN code for the certs
enter your PIN code for the certs
select a proper place to save it
select a proper place to save it
Run the 'openssl' application to convert the certificate. If you cd to the
openssl installation, you can do it like:
# ./apps/openssl pkcs12 -in [file you saved] -clcerts -out [PEMfile]
In Firefox, select Options, then Advanced, then the Encryption tab,
View Certificates. This opens the Certificate Manager, where you can
Export. Be sure to select PEM for the Save as type.
In Internet Explorer, select Internet Options, then the Content tab, then
Certificates. Then you can Export, and depending on the format you may
need to convert to PEM.
In Chrome, select Settings, then Show Advanced Settings. Under HTTPS/SSL
select Manage Certificates.
RESUMING FILE TRANSFERS
To continue a file transfer where it was previously aborted, curl supports
resume on http(s) downloads as well as ftp uploads and downloads.
resume on HTTP(S) downloads as well as FTP uploads and downloads.
Continue downloading a document:
@@ -703,7 +741,7 @@ RESUMING FILE TRANSFERS
curl -C - -o file http://www.server.com/
(*1) = This requires that the ftp server supports the non-standard command
(*1) = This requires that the FTP server supports the non-standard command
SIZE. If it doesn't, curl will say so.
(*2) = This requires that the web server supports at least HTTP/1.1. If it
@@ -712,7 +750,7 @@ RESUMING FILE TRANSFERS
TIME CONDITIONS
HTTP allows a client to specify a time condition for the document it
requests. It is If-Modified-Since or If-Unmodified-Since. Curl allow you to
requests. It is If-Modified-Since or If-Unmodified-Since. Curl allows you to
specify them with the -z/--time-cond flag.
For example, you can easily make a download that only gets performed if the
@@ -760,7 +798,7 @@ LDAP
and offer ldap:// support.
LDAP is a complex thing and writing an LDAP query is not an easy task. I do
advice you to dig up the syntax description for that elsewhere. Two places
advise you to dig up the syntax description for that elsewhere. Two places
that might suit you are:
Netscape's "Netscape Directory SDK 3.0 for C Programmer's Guide Chapter 10:
@@ -769,7 +807,7 @@ LDAP
RFC 2255, "The LDAP URL Format" http://curl.haxx.se/rfc/rfc2255.txt
To show you an example, this is now I can get all people from my local LDAP
To show you an example, this is how I can get all people from my local LDAP
server that has a certain sub-domain in their email address:
curl -B "ldap://ldap.frontec.se/o=frontec??sub?mail=*sth.frontec.se"
@@ -785,7 +823,7 @@ ENVIRONMENT VARIABLES
They should be set for protocol-specific proxies. General proxy should be
set with
ALL_PROXY
A comma-separated list of host names that shouldn't go through any proxy is
@@ -793,8 +831,9 @@ ENVIRONMENT VARIABLES
NO_PROXY
If a tail substring of the domain-path for a host matches one of these
strings, transactions with that node will not be proxied.
If the host name matches one of these strings, or the host is within the
domain of one of these strings, transactions with that node will not be
proxied.
The usage of the -x/--proxy flag overrides the environment variables.
@@ -802,15 +841,15 @@ ENVIRONMENT VARIABLES
NETRC
Unix introduced the .netrc concept a long time ago. It is a way for a user
to specify name and password for commonly visited ftp sites in a file so
to specify name and password for commonly visited FTP sites in a file so
that you don't have to type them in each time you visit those sites. You
realize this is a big security risk if someone else gets hold of your
passwords, so therefore most unix programs won't read this file unless it is
only readable by yourself (curl doesn't care though).
Curl supports .netrc files if told so (using the -n/--netrc and
--netrc-optional options). This is not restricted to only ftp,
but curl can use it for all protocols where authentication is used.
Curl supports .netrc files if told to (using the -n/--netrc and
--netrc-optional options). This is not restricted to just FTP,
so curl can use it for all protocols where authentication is used.
A very simple .netrc file could look something like:
@@ -831,7 +870,7 @@ KERBEROS FTP TRANSFER
Curl supports kerberos4 and kerberos5/GSSAPI for FTP transfers. You need
the kerberos package installed and used at curl build time for it to be
used.
available.
First, get the krb-ticket the normal way, like with the kinit/kauth tool.
Then use curl in way similar to:
@@ -866,7 +905,7 @@ TELNET
- NEW_ENV=<var,val> Sets an environment variable.
NOTE: the telnet protocol does not specify any way to login with a specified
NOTE: The telnet protocol does not specify any way to login with a specified
user and password so curl can't do that automatically. To do that, you need
to track when the login prompt is received and send the username and
password accordingly.
@@ -885,7 +924,7 @@ PERSISTENT CONNECTIONS
Note that curl cannot use persistent connections for transfers that are used
in subsequence curl invokes. Try to stuff as many URLs as possible on the
same command line if they are using the same host, as that'll make the
transfers faster. If you use a http proxy for file transfers, practically
transfers faster. If you use an HTTP proxy for file transfers, practically
all transfers will be persistent.
MULTIPLE TRANSFERS WITH A SINGLE COMMAND LINE
@@ -926,6 +965,28 @@ IPv6
IPv6 addresses provided other than in URLs (e.g. to the --proxy, --interface
or --ftp-port options) should not be URL encoded.
METALINK
Curl supports Metalink (both version 3 and 4 (RFC 5854) are supported), a way
to list multiple URIs and hashes for a file. Curl will make use of the mirrors
listed within for failover if there are errors (such as the file or server not
being available). It will also verify the hash of the file after the download
completes. The Metalink file itself is downloaded and processed in memory and
not stored in the local file system.
Example to use a remote Metalink file:
curl --metalink http://www.example.com/example.metalink
To use a Metalink file in the local file system, use FILE protocol (file://):
curl --metalink file://example.metalink
Please note that if FILE protocol is disabled, there is no way to use a local
Metalink file at the time of this writing. Also note that if --metalink and
--include are used together, --include will be ignored. This is because including
headers in the response will break Metalink parser and if the headers are included
in the file described in Metalink file, hash check will fail.
MAILING LISTS