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Checked in some grammatical and minor other fixes in the documentation and

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examples that I found in the FreeBSD ports system.
This commit is contained in:
Dan Fandrich 2008-09-10 07:11:45 +00:00
parent c98ab69cc7
commit 152cf6325d
7 changed files with 130 additions and 122 deletions
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@ -10,6 +10,9 @@ Daniel Fandrich (9 Sep 2008)
- Mike Revi discovered some swapped speed switches documented in the curl man
page.
- Checked in some grammatical and minor other fixes in the documentation and
examples that I found in the FreeBSD ports system.
Daniel Stenberg (8 Sep 2008)
- Dmitry Kurochkin patched a problem: I have found bug in pipelining through
proxy. I have a transparent proxy. When running with http_proxy environment

8
docs/TODO
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@ -50,7 +50,7 @@
7. SSL
7.1 Disable specific versions
7.2 Provide mytex locking API
7.2 Provide mutex locking API
7.3 dumpcert
7.4 Evaluate SSL patches
7.5 Cache OpenSSL contexts
@ -152,7 +152,7 @@
know MUST have it. This is error-prone. We therefore want the header files to
adapt to configure results. Those results must be stored in a new header and
they must use a curl name space, i.e not be HAVE_* prefix (as that would risk
collide with other apps that use libcurl and that runs configure).
a collision with other apps that use libcurl and that runs configure).
Work on this has been started but hasn't been finished, and the initial patch
and some details are found here:
@ -165,7 +165,7 @@
2.1 More non-blocking
Make sure we don't ever loop because of non-blocking sockets return
Make sure we don't ever loop because of non-blocking sockets returning
EWOULDBLOCK or similar. The GnuTLS connection etc.
2.2 Pause transfers
@ -304,7 +304,7 @@ to provide the data to send.
Provide an option that allows for disabling specific SSL versions, such as
SSLv2 http://curl.haxx.se/bug/feature.cgi?id=1767276
7.2 Provide mytex locking API
7.2 Provide mutex locking API
Provide a libcurl API for setting mutex callbacks in the underlying SSL
library, so that the same application code can use mutex-locking

227
docs/curl.1
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@ -34,7 +34,7 @@ protocols (HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP or
FILE). The command is designed to work without user interaction.
curl offers a busload of useful tricks like proxy support, user
authentication, ftp upload, HTTP post, SSL connections, cookies, file transfer
authentication, FTP upload, HTTP post, SSL connections, cookies, file transfer
resume and more. As you will see below, the number of features will make your
head spin!
@ -42,7 +42,7 @@ curl is powered by libcurl for all transfer-related features. See
.BR libcurl (3)
for details.
.SH URL
The URL syntax is protocol dependent. You'll find a detailed description in
The URL syntax is protocol-dependent. You'll find a detailed description in
RFC 3986.
You can specify multiple URLs or parts of URLs by writing part sets within
@ -64,7 +64,7 @@ several ones next to each other:
You can specify any amount of URLs on the command line. They will be fetched
in a sequential manner in the specified order.
Since curl 7.15.1 you can also specify step counter for the ranges, so that
Since curl 7.15.1 you can also specify a step counter for the ranges, so that
you can get every Nth number or letter:
http://www.numericals.com/file[1-100:10].txt
@ -81,10 +81,10 @@ handshakes. This improves speed. Of course this is only done on files
specified on a single command line and cannot be used between separate curl
invokes.
.SH "PROGRESS METER"
curl normally displays a progress meter during operations, indicating amount
of transferred data, transfer speeds and estimated time left etc.
curl normally displays a progress meter during operations, indicating the amount
of transferred data, transfer speeds and estimated time left, etc.
However, since curl displays data to the terminal by default, if you invoke
However, since curl displays this data to the terminal by default, if you invoke
curl to do an operation and it is about to write data to the terminal, it
\fIdisables\fP the progress meter as otherwise it would mess up the output
mixing progress meter and response data.
@ -93,7 +93,7 @@ If you want a progress meter for HTTP POST or PUT requests, you need to
redirect the response output to a file, using shell redirect (>), -o [file] or
similar.
It is not the same case for FTP upload as that operation is not spitting out
It is not the same case for FTP upload as that operation does not spit out
any response data to the terminal.
If you prefer a progress "bar" instead of the regular meter, \fI-#\fP is your
@ -119,7 +119,7 @@ If this option is set more than once, the last one will be the one that's
used.
.IP "--anyauth"
(HTTP) Tells curl to figure out authentication method by itself, and use the
most secure one the remote site claims it supports. This is done by first
most secure one the remote site claims to support. This is done by first
doing a request and checking the response-headers, thus possibly inducing an
extra network round-trip. This is used instead of setting a specific
authentication method, which you can do with \fI--basic\fP, \fI--digest\fP,
@ -158,10 +158,10 @@ sent to stdout to be in text mode for win32 systems.
(HTTP) Tells curl to use HTTP Basic authentication. This is the default and
this option is usually pointless, unless you use it to override a previously
set option that sets a different authentication method (such as \fI--ntlm\fP,
\fI--digest\fP and \fI--negotiate\fP).
\fI--digest\fP, or \fI--negotiate\fP).
.IP "--ciphers <list of ciphers>"
(SSL) Specifies which ciphers to use in the connection. The list of ciphers
must be using valid ciphers. Read up on SSL cipher list details on this URL:
must specify valid ciphers. Read up on SSL cipher list details on this URL:
\fIhttp://www.openssl.org/docs/apps/ciphers.html\fP
NSS ciphers are done differently than OpenSSL and GnuTLS. The full list of
@ -199,7 +199,7 @@ used.
Continue/Resume a previous file transfer at the given offset. The given offset
is the exact number of bytes that will be skipped counted from the beginning
of the source file before it is transferred to the destination. If used with
uploads, the ftp server command SIZE will not be used by curl.
uploads, the FTP server command SIZE will not be used by curl.
Use "-C -" to tell curl to automatically find out where/how to resume the
transfer. It then uses the given output/input files to figure that out.
@ -223,7 +223,7 @@ using the content-type application/x-www-form-urlencoded. Compare to
\fI-F/--form\fP.
\fI-d/--data\fP is the same as \fI--data-ascii\fP. To post data purely binary,
you should instead use the \fI--data-binary\fP option. To URL encode the value
you should instead use the \fI--data-binary\fP option. To URL-encode the value
of a form field you may use \fI--data-urlencode\fP.
If any of these options is used more than once on the same command line, the
@ -233,7 +233,7 @@ chunk that looks like \&'name=daniel&skill=lousy'.
If you start the data with the letter @, the rest should be a file name to
read the data from, or - if you want curl to read the data from stdin. The
contents of the file must already be url-encoded. Multiple files can also be
contents of the file must already be URL-encoded. Multiple files can also be
specified. Posting data from a file named 'foobar' would thus be done with
\fI--data @foobar\fP.
.IP "--data-binary <data>"
@ -245,33 +245,33 @@ is posted in a similar manner as \fI--data-ascii\fP does, except that newlines
are preserved and conversions are never done.
If this option is used several times, the ones following the first will append
data. As described in \fI-d/--data\fP.
data as described in \fI-d/--data\fP.
.IP "--data-urlencode <data>"
(HTTP) This posts data, similar to the other --data options with the exception
that this performs URL encoding. (Added in 7.18.0)
that this performs URL-encoding. (Added in 7.18.0)
To be CGI compliant, the <data> part should begin with a \fIname\fP followed
To be CGI-compliant, the <data> part should begin with a \fIname\fP followed
by a separator and a content specification. The <data> part can be passed to
curl using one of the following syntaxes:
.RS
.IP "content"
This will make curl URL encode the content and pass that on. Just be careful
This will make curl URL-encode the content and pass that on. Just be careful
so that the content doesn't contain any = or @ letters, as that will then make
the syntax match one of the other cases below!
.IP "=content"
This will make curl URL encode the content and pass that on. The preceding =
This will make curl URL-encode the content and pass that on. The preceding =
letter is not included in the data.
.IP "name=content"
This will make curl URL encode the content part and pass that on. Note that
the name part is expected to be URL encoded already.
This will make curl URL-encode the content part and pass that on. Note that
the name part is expected to be URL-encoded already.
.IP "@filename"
This will make curl load data from the given file (including any newlines),
URL encode that data and pass it on in the POST.
URL-encode that data and pass it on in the POST.
.IP "name@filename"
This will make curl load data from the given file (including any newlines),
URL encode that data and pass it on in the POST. The name part gets an equal
URL-encode that data and pass it on in the POST. The name part gets an equal
sign appended, resulting in \fIname=urlencoded-file-content\fP. Note that the
name is expected to be URL encoded already.
name is expected to be URL-encoded already.
.RE
.IP "--digest"
(HTTP) Enables HTTP Digest authentication. This is a authentication that
@ -304,10 +304,10 @@ Write the protocol headers to the specified file.
This option is handy to use when you want to store the headers that a HTTP
site sends to you. Cookies from the headers could then be read in a second
curl invoke by using the \fI-b/--cookie\fP option! The \fI-c/--cookie-jar\fP
curl invocation by using the \fI-b/--cookie\fP option! The \fI-c/--cookie-jar\fP
option is however a better way to store cookies.
When used on FTP, the ftp server response lines are considered being "headers"
When used in FTP, the FTP server response lines are considered being "headers"
and thus are saved there.
If this option is used several times, the last one will be used.
@ -358,7 +358,7 @@ file may contain multiple CA certificates. The certificate(s) must be in PEM
format. Normally curl is built to use a default file for this, so this option
is typically used to alter that default file.
curl recognizes the environment variable named 'CURL_CA_BUNDLE' if that is
curl recognizes the environment variable named 'CURL_CA_BUNDLE' if it is
set, and uses the given path as a path to a CA cert bundle. This option
overrides that variable.
@ -384,7 +384,7 @@ certificates.
If this option is used several times, the last one will be used.
.IP "-f/--fail"
(HTTP) Fail silently (no output at all) on server errors. This is mostly done
like this to better enable scripts etc to better deal with failed attempts. In
to better enable scripts etc to better deal with failed attempts. In
normal cases when a HTTP server fails to deliver a document, it returns an
HTML document stating so (which often also describes why and more). This flag
will prevent curl from outputting that and return error 22.
@ -445,7 +445,7 @@ connection if the server doesn't support SSL/TLS. See also
\fI--ftp-ssl-control\fP and \fI--ftp-ssl-reqd\fP for different levels of
encryption required. (Added in 7.11.0)
.IP "--ftp-ssl-control"
(FTP) Require SSL/TLS for the ftp login, clear for transfer. Allows secure
(FTP) Require SSL/TLS for the FTP login, clear for transfer. Allows secure
authentication, but non-encrypted data transfers for efficiency. Fails the
transfer if the server doesn't support SSL/TLS. (Added in 7.16.0)
.IP "--ftp-ssl-reqd"
@ -467,7 +467,7 @@ shutdown from the server. The active mode initiates the shutdown and
waits for a reply from the server.
(Added in 7.16.2)
.IP "-F/--form <name=content>"
(HTTP) This lets curl emulate a filled in form in which a user has pressed the
(HTTP) This lets curl emulate a filled-in form in which a user has pressed the
submit button. This causes curl to POST data using the Content-Type
multipart/form-data according to RFC1867. This enables uploading of binary
files etc. To force the 'content' part to be a file, prefix the file name
@ -517,7 +517,7 @@ contents but they should be encoded according to the URI standard.
When used, this option will make all data specified with \fI-d/--data\fP or
\fI--data-binary\fP to be used in a HTTP GET request instead of the POST
request that otherwise would be used. The data will be appended to the URL
with a '?' separator.
with a '?' separator.
If used in combination with -I, the POST data will instead be appended to the
URL with a HEAD request.
@ -537,9 +537,9 @@ set headers without knowing perfectly well what you're doing. Remove an
internal header by giving a replacement without content on the right side of
the colon, as in: -H \&"Host:".
curl will make sure that each header you add/replace get sent with the proper
end of line marker, you should thus \fBnot\fP add that as a part of the header
content: do not add newlines or carriage returns they will only mess things up
curl will make sure that each header you add/replace is sent with the proper
end-of-line marker, you should thus \fBnot\fP add that as a part of the header
content: do not add newlines or carriage returns, they will only mess things up
for you.
See also the \fI-A/--user-agent\fP and \fI-e/--referer\fP options.
@ -580,7 +580,7 @@ cookies when they're closed down.
(SSL) This option explicitly allows curl to perform "insecure" SSL connections
and transfers. All SSL connections are attempted to be made secure by using
the CA certificate bundle installed by default. This makes all connections
considered "insecure" to fail unless \fI-k/--insecure\fP is used.
considered "insecure" fail unless \fI-k/--insecure\fP is used.
See this online resource for further details:
\fBhttp://curl.haxx.se/docs/sslcerts.html\fP
@ -599,16 +599,16 @@ separate file.
If this option is used several times, the last one will be used.
.IP "--key-type <type>"
(SSL) Private key file type. Specify which type your \fI--key\fP provided
private key is. DER, PEM and ENG are supported. If not specified, PEM is
private key is. DER, PEM, and ENG are supported. If not specified, PEM is
assumed.
If this option is used several times, the last one will be used.
.IP "--krb <level>"
(FTP) Enable Kerberos authentication and use. The level must be entered and
should be one of 'clear', 'safe', 'confidential' or 'private'. Should you use
should be one of 'clear', 'safe', 'confidential', or 'private'. Should you use
a level that is not one of these, 'private' will instead be used.
This option requires that the library was built with kerberos4 or GSSAPI
This option requires a library built with kerberos4 or GSSAPI
(GSS-Negotiate) support. This is not very common. Use \fI-V/--version\fP to
see if your curl supports it.
@ -618,11 +618,11 @@ Specify which config file to read curl arguments from. The config file is a
text file in which command line arguments can be written which then will be
used as if they were written on the actual command line. Options and their
parameters must be specified on the same config file line, separated by
white space, colon, the equals sign or any combination thereof (however,
whitespace, colon, the equals sign or any combination thereof (however,
the preferred separator is the equals sign). If the parameter is to contain
white spaces, the parameter must be enclosed within quotes. Within double
whitespace, the parameter must be enclosed within quotes. Within double
quotes, the following escape sequences are available: \\\\, \\", \\t, \\n,
\\r and \\v. A backlash preceding any other letter is ignored. If the
\\r and \\v. A backslash preceding any other letter is ignored. If the
first column of a config line is a '#' character, the rest of the line will be
treated as a comment. Only write one option per physical line in the config
file.
@ -645,12 +645,12 @@ the following places in this order:
1) curl tries to find the "home dir": It first checks for the CURL_HOME and
then the HOME environment variables. Failing that, it uses getpwuid() on
unix-like systems (which returns the home dir given the current user in your
UNIX-like systems (which returns the home dir given the current user in your
system). On Windows, it then checks for the APPDATA variable, or as a last
resort the '%USERPROFILE%\Application Data'.
resort the '%USERPROFILE%\\Application Data'.
2) On windows, if there is no _curlrc file in the home dir, it checks for one
in the same dir the executable curl is placed. On unix-like systems, it will
in the same dir the curl executable is placed. On UNIX-like systems, it will
simply try to load .curlrc from the determined home dir.
.nf
@ -671,7 +671,7 @@ This option can be used multiple times to load multiple config files.
.IP "--libcurl <file>"
Append this option to any ordinary curl command line, and you will get a
libcurl-using source code written to the file that does the equivalent
operation of what your command line operation does!
of what your command-line operation does!
NOTE: this does not properly support -F and the sending of multipart
formposts, so in those cases the output program will be missing necessary
@ -681,18 +681,18 @@ If this option is used several times, the last given file name will be
used. (Added in 7.16.1)
.IP "--limit-rate <speed>"
Specify the maximum transfer rate you want curl to use. This feature is useful
if you have a limited pipe and you'd like your transfer not use your entire
if you have a limited pipe and you'd like your transfer not to use your entire
bandwidth.
The given speed is measured in bytes/second, unless a suffix is appended.
Appending 'k' or 'K' will count the number as kilobytes, 'm' or M' makes it
megabytes while 'g' or 'G' makes it gigabytes. Examples: 200K, 3m and 1G.
megabytes, while 'g' or 'G' makes it gigabytes. Examples: 200K, 3m and 1G.
The given rate is the average speed, counted during the entire transfer. It
The given rate is the average speed counted during the entire transfer. It
means that curl might use higher transfer speeds in short bursts, but over
time it uses no more than the given rate.
If you are also using the \fI-Y/--speed-limit\fP option, that option will take
If you also use the \fI-Y/--speed-limit\fP option, that option will take
precedence and might cripple the rate-limiting slightly, to help keeping the
speed-limit logic working.
@ -710,12 +710,12 @@ subdirectories and symbolic links.
.IP "--local-port <num>[-num]"
Set a preferred number or range of local port numbers to use for the
connection(s). Note that port numbers by nature is a scarce resource that
connection(s). Note that port numbers by nature are a scarce resource that
will be busy at times so setting this range to something too narrow might
cause unnecessary connection setup failures. (Added in 7.15.2)
.IP "-L/--location"
(HTTP/HTTPS) If the server reports that the requested page has moved to a
different location (indicated with a Location: header and a 3XX response code)
different location (indicated with a Location: header and a 3XX response code),
this option will make curl redo the request on the new place. If used together
with \fI-i/--include\fP or \fI-I/--head\fP, headers from all requested pages
will be shown. When authentication is used, curl only sends its credentials to
@ -740,7 +740,7 @@ Specify the maximum size (in bytes) of a file to download. If the file
requested is larger than this value, the transfer will not start and curl will
return with exit code 63.
NOTE: The file size is not always known prior to download, and for such files
\fBNOTE:\fP The file size is not always known prior to download, and for such files
this option has no effect even if the file transfer ends up being larger than
this given limit. This concerns both FTP and HTTP transfers.
.IP "-m/--max-time <seconds>"
@ -753,24 +753,24 @@ If this option is used several times, the last one will be used.
Manual. Display the huge help text.
.IP "-n/--netrc"
Makes curl scan the \fI.netrc\fP (\fI_netrc\fP on Windows) file in the user's
home directory for login name and password. This is typically used for ftp on
unix. If used with http, curl will enable user authentication. See
home directory for login name and password. This is typically used for FTP on
UNIX. If used with HTTP, curl will enable user authentication. See
.BR netrc(4)
or
.BR ftp(1)
for details on the file format. Curl will not complain if that file
hasn't the right permissions (it should not be world nor group
readable). The environment variable "HOME" is used to find the home
doesn't have the right permissions (it should not be either world- or
group-readable). The environment variable "HOME" is used to find the home
directory.
A quick and very simple example of how to setup a \fI.netrc\fP to allow curl
to ftp to the machine host.domain.com with user name \&'myself' and password
to FTP to the machine host.domain.com with user name \&'myself' and password
\&'secret' should look similar to:
.B "machine host.domain.com login myself password secret"
.IP "--netrc-optional"
Very similar to \fI--netrc\fP, but this option makes the .netrc usage
\fBoptional\fP and not mandatory as the \fI--netrc\fP does.
\fBoptional\fP and not mandatory as the \fI--netrc\fP option does.
.IP "--negotiate"
(HTTP) Enables GSS-Negotiate authentication. The GSS-Negotiate method was
designed by Microsoft and is used in their web applications. It is primarily
@ -781,7 +781,7 @@ draft-brezak-spnego-http-04.txt.
If you want to enable Negotiate for your proxy authentication, then use
\fI--proxy-negotiate\fP.
This option requires that the library was built with GSSAPI support. This is
This option requires a library built with GSSAPI support. This is
not very common. Use \fI-V/--version\fP to see if your version supports
GSS-Negotiate.
@ -807,7 +807,7 @@ Note that this is the negated option name documented. You can thus use
\fI--keepalive\fP to enforce keepalive.
.IP "--no-sessionid"
(SSL) Disable curl's use of SSL session-ID caching. By default all transfers
are done using the cache. Note that while nothing ever should get hurt by
are done using the cache. Note that while nothing should ever get hurt by
attempting to reuse SSL session-IDs, there seem to be broken SSL
implementations in the wild that may require you to disable this in order for
you to succeed. (Added in 7.16.0)
@ -817,15 +817,15 @@ Note that this is the negated option name documented. You can thus use
.IP "--ntlm"
(HTTP) Enables NTLM authentication. The NTLM authentication method was
designed by Microsoft and is used by IIS web servers. It is a proprietary
protocol, reversed engineered by clever people and implemented in curl based
protocol, reverse-engineered by clever people and implemented in curl based
on their efforts. This kind of behavior should not be endorsed, you should
encourage everyone who uses NTLM to switch to a public and documented
authentication method instead. Such as Digest.
authentication method instead, such as Digest.
If you want to enable NTLM for your proxy authentication, then use
\fI--proxy-ntlm\fP.
This option requires that the library was built with SSL support. Use
This option requires a library built with SSL support. Use
\fI-V/--version\fP to see if your curl supports NTLM.
If this option is used several times, the following occurrences make no
@ -842,7 +842,7 @@ or use several variables like:
curl http://{site,host}.host[1-5].com -o "#1_#2"
You may use this option as many times as you have number of URLs.
You may use this option as many times as the number of URLs you have.
See also the \fI--create-dirs\fP option to create the local directories
dynamically.
@ -853,21 +853,21 @@ part of the remote file is used, the path is cut off.)
The remote file name to use for saving is extracted from the given URL,
nothing else.
You may use this option as many times as you have number of URLs.
You may use this option as many times as the number of URLs you have.
.IP "--remote-name-all"
This option changes the default action for all given URLs to be dealt with as
if \fI-O/--remote-name\fP were used for each one. So if you want to disable
that for a specific URL after \fI--remote-name-all\fP has been used, you must
use "-o -" or \fI--no-remote-name\fP. (Added in 7.19.0)
.IP "--pass <phrase>"
(SSL/SSH) Pass phrase for the private key
(SSL/SSH) Passphrase for the private key
If this option is used several times, the last one will be used.
.IP "--post301"
Tells curl to respect RFC 2616/10.3.2 and not convert POST requests into GET
requests when following a 301 redirection. The non-RFC behaviour is ubiquitous
in web browsers, so curl does the conversion by default to maintain
consistency. However, a server may requires a POST to remain a POST after such
consistency. However, a server may require a POST to remain a POST after such
a redirection. This option is meaningful only when using \fI-L/--location\fP
(Added in 7.17.1)
.IP "--post302"
@ -907,18 +907,18 @@ separate file.
If this option is used several times, the last one will be used.
.IP "-P/--ftp-port <address>"
(FTP) Reverses the initiator/listener roles when connecting with ftp. This
switch makes Curl use the PORT command instead of PASV. In practise, PORT
(FTP) Reverses the initiator/listener roles when connecting with FTP. This
switch makes Curl use the PORT command instead of PASV. In practice, PORT
tells the server to connect to the client's specified address and port, while
PASV asks the server for an ip address and port to connect to. <address>
PASV asks the server for an IP address and port to connect to. <address>
should be one of:
.RS
.IP interface
i.e "eth0" to specify which interface's IP address you want to use (Unix only)
i.e "eth0" to specify which interface's IP address you want to use (Unix only)
.IP "IP address"
i.e "192.168.10.1" to specify exact IP number
i.e "192.168.10.1" to specify the exact IP address
.IP "host name"
i.e "my.host.domain" to specify machine
i.e "my.host.domain" to specify the machine
.IP "-"
make curl pick the same IP address that is already used for the control
connection
@ -933,11 +933,11 @@ file will not be read and used. See the \fI-K/--config\fP for details on the
default config file search path.
.IP "-Q/--quote <command>"
(FTP/SFTP) Send an arbitrary command to the remote FTP or SFTP server. Quote
commands are sent BEFORE the transfer is taking place (just after the
commands are sent BEFORE the transfer takes place (just after the
initial PWD command in an FTP transfer, to be exact). To make commands
take place after a successful transfer, prefix them with a dash '-'.
To make commands get sent after libcurl has changed working directory,
just before the transfer command(s), prefix the command with '+' (this
To make commands be sent after libcurl has changed the working directory,
just before the transfer command(s), prefix the command with a '+' (this
is only supported for FTP). You may specify any number of commands. If
the server returns failure for one of the commands, the entire operation
will be aborted. You must send syntactically correct FTP commands as
@ -983,7 +983,7 @@ random data. The data is used to seed the random engine for SSL connections.
See also the \fI--egd-file\fP option.
.IP "-r/--range <range>"
(HTTP/FTP/FILE) Retrieve a byte range (i.e a partial document) from a
HTTP/1.1, FTP server or a local FILE. Ranges can be specified in a number of
HTTP/1.1 or FTP server or a local FILE. Ranges can be specified in a number of
ways.
.RS
.TP 10
@ -1006,21 +1006,21 @@ specifies the first and last byte only(*)(H)
specifies 300 bytes from offset 500(H)
.TP
.B 100-199,500-599
specifies two separate 100 bytes ranges(*)(H)
specifies two separate 100-byte ranges(*)(H)
.RE
(*) = NOTE that this will cause the server to reply with a multipart
response!
Only digit characters (0-9) are valid in 'start' and 'stop' of range syntax
\&'start-stop'. If a non-digit character is given in the range, the server's
response will be indeterminable, depending on different server's configuration.
Only digit characters (0-9) are valid in the 'start' and 'stop' fields of
the \&'start-stop' range syntax. If a non-digit character is given in the range, the server's
response will be unspecified, depending on the server's configuration.
You should also be aware that many HTTP/1.1 servers do not have this feature
enabled, so that when you attempt to get a range, you'll instead get the whole
document.
FTP range downloads only support the simple syntax 'start-stop' (optionally
FTP range downloads only support the simple 'start-stop' syntax (optionally
with one of the numbers omitted). It depends on the non-RFC command SIZE.
If this option is used several times, the last one will be used.
@ -1046,13 +1046,13 @@ retries. (Added in 7.12.3)
If this option is used multiple times, the last occurrence decide the amount.
.IP "--retry-delay <seconds>"
Make curl sleep this amount of time between each retry when a transfer has
Make curl sleep this amount of time before each retry when a transfer has
failed with a transient error (it changes the default backoff time algorithm
between retries). This option is only interesting if \fI--retry\fP is also
used. Setting this delay to zero will make curl use the default backoff time.
(Added in 7.12.3)
If this option is used multiple times, the last occurrence decide the amount.
If this option is used multiple times, the last occurrence determines the amount.
.IP "--retry-max-time <seconds>"
The retry timer is reset before the first transfer attempt. Retries will be
done as usual (see \fI--retry\fP) as long as the timer hasn't reached this
@ -1061,12 +1061,13 @@ will be made and while performing, it may take longer than this given time
period. To limit a single request\'s maximum time, use \fI-m/--max-time\fP.
Set this option to zero to not timeout retries. (Added in 7.12.3)
If this option is used multiple times, the last occurrence decide the amount.
If this option is used multiple times, the last occurrence determines the
amount.
.IP "-s/--silent"
Silent mode. Don't show progress meter or error messages. Makes
Curl mute.
.IP "-S/--show-error"
When used with -s it makes curl show error message if it fails.
When used with -s it makes curl show an error message if it fails.
.IP "--socks4 <host[:port]>"
Use the specified SOCKS4 proxy. If the port number is not specified, it is
assumed at port 1080. (Added in 7.15.2)
@ -1127,7 +1128,7 @@ part in the specified URL, Curl will append the local file name. NOTE that you
must use a trailing / on the last directory to really prove to Curl that there
is no file name or curl will think that your last directory name is the remote
file name to use. That will most likely cause the upload operation to fail. If
this is used on a http(s) server, the PUT command will be used.
this is used on a HTTP(S) server, the PUT command will be used.
Use the file name "-" (a single dash) to use stdin instead of a given file.
@ -1166,7 +1167,7 @@ If this option is used several times, the last one will be used.
Prepends a time stamp to each trace or verbose line that curl displays.
(Added in 7.14.0)
.IP "-u/--user <user:password>"
Specify user and password to use for server authentication. Overrides
Specify the user name and password to use for server authentication. Overrides
\fI-n/--netrc\fP and \fI--netrc-optional\fP.
If you just give the user name (without entering a colon) curl will prompt for
@ -1178,7 +1179,7 @@ simply specifying a single colon with this option: "-u :".
If this option is used several times, the last one will be used.
.IP "-U/--proxy-user <user:password>"
Specify user and password to use for proxy authentication.
Specify the user name and password to use for proxy authentication.
If you use an SSPI-enabled curl binary and do NTLM authentication, you can
force curl to pick up the user name and password from your environment by
@ -1192,9 +1193,9 @@ URL(s) in a config file.
This option may be used any number of times. To control where this URL is
written, use the \fI-o/--output\fP or the \fI-O/--remote-name\fP options.
.IP "-v/--verbose"
Makes the fetching more verbose/talkative. Mostly usable for debugging. Lines
Makes the fetching more verbose/talkative. Mostly useful for debugging. A line
starting with '>' means "header data" sent by curl, '<' means "header data"
received by curl that is hidden in normal cases and lines starting with '*'
received by curl that is hidden in normal cases, and a line starting with '*'
means additional info provided by curl.
Note that if you only want HTTP headers in the output, \fI-i/--include\fP
@ -1219,7 +1220,7 @@ reports to offer. Available features include:
.IP "IPv6"
You can use IPv6 with this.
.IP "krb4"
Krb4 for ftp is supported.
Krb4 for FTP is supported.
.IP "SSL"
HTTPS and FTPS are supported.
.IP "libz"
@ -1227,7 +1228,7 @@ Automatic decompression of compressed files over HTTP is supported.
.IP "NTLM"
NTLM authentication is supported.
.IP "GSS-Negotiate"
Negotiate authentication and krb5 for ftp is supported.
Negotiate authentication and krb5 for FTP is supported.
.IP "Debug"
This curl uses a libcurl built with Debug. This enables more error-tracking
and memory debugging etc. For curl-developers only!
@ -1252,7 +1253,7 @@ format from stdin you write "@-".
The variables present in the output format will be substituted by the value or
text that curl thinks fit, as described below. All variables are specified
like %{variable_name} and to output a normal % you just write them like
as %{variable_name} and to output a normal % you just it them as
%%. You can output a newline by using \\n, a carriage return with \\r and a tab
space with \\t.
@ -1260,11 +1261,11 @@ space with \\t.
The %-letter is a special letter in the win32-environment, where all
occurrences of % must be doubled when using this option.
Available variables are at this point:
The variables available at this point are:
.RS
.TP 15
.B url_effective
The URL that was fetched last. This is mostly meaningful if you've told curl
The URL that was fetched last. This is most meaningful if you've told curl
to follow location: headers.
.TP
.B http_code
@ -1293,20 +1294,20 @@ The time, in seconds, it took from the start until the SSL/SSH/etc
connect/handshake to the remote host was completed. (Added in 7.19.0)
.TP
.B time_pretransfer
The time, in seconds, it took from the start until the file transfer is just
The time, in seconds, it took from the start until the file transfer was just
about to begin. This includes all pre-transfer commands and negotiations that
are specific to the particular protocol(s) involved.
.TP
.B time_redirect
The time, in seconds, it took for all redirection steps include name lookup,
connect, pretransfer and transfer before final transaction was
connect, pretransfer and transfer before the final transaction was
started. time_redirect shows the complete execution time for multiple
redirections. (Added in 7.12.3)
.TP
.B time_starttransfer
The time, in seconds, it took from the start until the first byte is just about
The time, in seconds, it took from the start until the first byte was just about
to be transferred. This includes time_pretransfer and also the time the
server needs to calculate the result.
server needed to calculate the result.
.TP
.B size_download
The total amount of bytes that were downloaded.
@ -1350,10 +1351,10 @@ means the verification was successful. (Added in 7.19.0)
If this option is used several times, the last one will be used.
.IP "-x/--proxy <proxyhost[:port]>"
Use specified HTTP proxy. If the port number is not specified, it is assumed
Use the specified HTTP proxy. If the port number is not specified, it is assumed
at port 1080.
This option overrides existing environment variables that sets proxy to
This option overrides existing environment variables that set the proxy to
use. If there's an environment variable setting a proxy, you can set proxy to
\&"" to override it.
@ -1363,8 +1364,8 @@ operations might not be available. This is not the case if you can tunnel
through the proxy, as done with the \fI-p/--proxytunnel\fP option.
Starting with 7.14.1, the proxy host can be specified the exact same way as
the proxy environment variables, include protocol prefix (http://) and
embedded user + password.
the proxy environment variables, including the protocol prefix (http://) and
the embedded user + password.
If this option is used several times, the last one will be used.
.IP "-X/--request <command>"
@ -1375,7 +1376,7 @@ details and explanations.
(FTP)
Specifies a custom FTP command to use instead of LIST when doing file lists
with ftp.
with FTP.
If this option is used several times, the last one will be used.
.IP "-y/--speed-time <time>"
@ -1417,7 +1418,7 @@ If this option is used several times, the last one will be used.
internally preferred: HTTP 1.1.
.IP "-1/--tlsv1"
(SSL)
Forces curl to use TSL version 1 when negotiating with a remote TLS server.
Forces curl to use TLS version 1 when negotiating with a remote TLS server.
.IP "-2/--sslv2"
(SSL)
Forces curl to use SSL version 2 when negotiating with a remote SSL server.
@ -1426,11 +1427,11 @@ Forces curl to use SSL version 2 when negotiating with a remote SSL server.
Forces curl to use SSL version 3 when negotiating with a remote SSL server.
.IP "-4/--ipv4"
If libcurl is capable of resolving an address to multiple IP versions (which
it is if it is ipv6-capable), this option tells libcurl to resolve names to
it is if it is IPv6-capable), this option tells libcurl to resolve names to
IPv4 addresses only.
.IP "-6/--ipv6"
If libcurl is capable of resolving an address to multiple IP versions (which
it is if it is ipv6-capable), this option tells libcurl to resolve names to
it is if it is IPv6-capable), this option tells libcurl to resolve names to
IPv6 addresses only.
.IP "-#/--progress-bar"
Make curl display progress information as a progress bar instead of the
@ -1442,13 +1443,13 @@ Default config file, see \fI-K/--config\fP for details.
.SH ENVIRONMENT
.IP "http_proxy [protocol://]<host>[:port]"
Sets proxy server to use for HTTP.
Sets the proxy server to use for HTTP.
.IP "HTTPS_PROXY [protocol://]<host>[:port]"
Sets proxy server to use for HTTPS.
Sets the proxy server to use for HTTPS.
.IP "FTP_PROXY [protocol://]<host>[:port]"
Sets proxy server to use for FTP.
Sets the proxy server to use for FTP.
.IP "ALL_PROXY [protocol://]<host>[:port]"
Sets proxy server to use if no protocol-specific proxy is set.
Sets the proxy server to use if no protocol-specific proxy is set.
.IP "NO_PROXY <comma-separated list of hosts>"
list of host names that shouldn't go through any proxy. If set to a asterisk
\&'*' only, it matches all hosts.
@ -1572,7 +1573,7 @@ Sending the data requires a rewind that failed
.IP 66
Failed to initialise SSL Engine
.IP 67
User, password or similar was not accepted and curl failed to login
The user name, password, or similar was not accepted and curl failed to log in
.IP 68
File not found on TFTP server
.IP 69
@ -1604,7 +1605,7 @@ Could not load CRL file, missing or wrong format (added in 7.19.0)
.IP 83
Issuer check failed (added in 7.19.0)
.IP XX
There will appear more error codes here in future releases. The existing ones
More error codes will appear here in future releases. The existing ones
are meant to never change.
.SH AUTHORS / CONTRIBUTORS
Daniel Stenberg is the main author, but the whole list of contributors is

6
docs/examples/fileupload.c
View File

@ -27,7 +27,11 @@ int main(void)
return 1; /* can't continue */
}
stat("debugit", &file_info); /* to get the file size */
/* to get the file size */
if(fstat(fileno(fd), &file_info) != 0) {
return 1; /* can't continue */
}
curl = curl_easy_init();
if(curl) {

4
docs/libcurl/curl_easy_pause.3
View File

@ -12,7 +12,7 @@ curl_easy_pause - pause and unpause a connection
Using this function, you can explicitly mark a running connection to get
paused, and you can unpause a connection that was previously paused.
A connection can made to pause by using this function or by letting the read
A connection can be paused by using this function or by letting the read
or the write callbacks return the proper magic return code
(\fICURL_READFUNC_PAUSE\fP and \fICURL_WRITEFUNC_PAUSE\fP). A write callback
that returns pause signals to the library that it couldn't take care of any
@ -56,7 +56,7 @@ it in an allocated buffer until the reading is again unpaused using this
function.
If the downloaded data is compressed and is asked to get uncompressed
automatially on download, libcurl will continue to uncompress the entire
automatically on download, libcurl will continue to uncompress the entire
downloaded chunk and it will cache the data uncompressed. This has the side-
effect that if you download something that is compressed a lot, it can result
in a very large data amount needing to be allocated to save the data during

2
docs/libcurl/curl_multi_setopt.3
View File

@ -49,7 +49,7 @@ one of the \&"performing" functions of the multi interface
\fIcurl_multi_perform(3)\fP) - to allow libcurl to keep timeouts and retries
etc to work. A timeout value of -1 means that there is no timeout at all, and
0 means that the timeout is already reached. Libcurl attempts to limit calling
this only when the fixed future timeout time actually change. See also
this only when the fixed future timeout time actually changes. See also
\fICURLMOPT_TIMERDATA\fP. This callback can be used instead of, or in addition
to, \fIcurl_multi_timeout(3)\fP. (Added in 7.16.0)
.IP CURLMOPT_TIMERDATA

2
lib/easy.c
View File

@ -852,7 +852,7 @@ CURLcode curl_easy_pause(CURL *curl, int action)
if(data->state.tempwrite && (tempsize - chunklen)) {
/* Ouch, the reading is again paused and the block we send is now
"cached". If this is the final chunk we can leave it like this, but
if we have more chunks that is cached after this, we need to free
if we have more chunks that are cached after this, we need to free
the newly cached one and put back a version that is truly the entire
contents that is saved for later
*/