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Editing File: /usr/share/doc/curl-7.29.0/FEATURES

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FEATURES

curl tool
 - config file support
 - multiple URLs in a single command line
 - range "globbing" support: [0-13], {one,two,three}
 - multiple file upload on a single command line
 - custom maximum transfer rate
 - redirectable stderr

libcurl supports
 - full URL syntax with no length limit
 - custom maximum download time
 - custom least download speed acceptable
 - custom output result after completion
 - guesses protocol from host name unless specified
 - uses .netrc
 - progress bar/time specs while downloading
 - "standard" proxy environment variables support
 - compiles on win32 (reported builds on 40+ operating systems)
 - selectable network interface for outgoing traffic
 - IPv6 support on unix and Windows
 - persistent connections
 - socks5 support
 - supports user name + password in proxy environment variables
 - operations through proxy "tunnel" (using CONNECT)
 - supports large files (>2GB and >4GB) both upload/download
 - replaceable memory functions (malloc, free, realloc, etc)
 - asynchronous name resolving (*6)
 - both a push and a pull style interface

HTTP
 - HTTP/1.1 compliant (optionally uses 1.0)
 - GET
 - PUT
 - HEAD
 - POST
 - Pipelining
 - multipart formpost (RFC1867-style)
 - authentication: Basic, Digest, NTLM (*9), GSS-Negotiate/Negotiate (*3) and
   SPNEGO (*4) to server and proxy
 - resume (both GET and PUT)
 - follow redirects
 - maximum amount of redirects to follow
 - custom HTTP request
 - cookie get/send fully parsed
 - reads/writes the netscape cookie file format
 - custom headers (replace/remove internally generated headers)
 - custom user-agent string
 - custom referer string
 - range
 - proxy authentication
 - time conditions
 - via http-proxy
 - retrieve file modification date
 - Content-Encoding support for deflate and gzip
 - "Transfer-Encoding: chunked" support for "uploads"

HTTPS (*1)
 - (all the HTTP features)
 - using client certificates
 - verify server certificate
 - via http-proxy
 - select desired encryption
 - force usage of a specific SSL version (SSLv2(*7), SSLv3 or TLSv1)

FTP
 - download
 - authentication
 - kerberos4 (*5), kerberos5 (*3)
 - active/passive using PORT, EPRT, PASV or EPSV
 - single file size information (compare to HTTP HEAD)
 - 'type=' URL support
 - dir listing
 - dir listing names-only
 - upload
 - upload append
 - upload via http-proxy as HTTP PUT
 - download resume
 - upload resume
 - custom ftp commands (before and/or after the transfer)
 - simple "range" support
 - via http-proxy
 - all operations can be tunneled through a http-proxy
 - customizable to retrieve file modification date
 - no dir depth limit

FTPS (*1)
 - implicit ftps:// support that use SSL on both connections
 - explicit "AUTH TSL" and "AUTH SSL" usage to "upgrade" plain ftp://
   connection to use SSL for both or one of the connections

SCP (*8)
 - both password and public key auth

SFTP (*8)
 - both password and public key auth
 - with custom commands sent before/after the transfer

TFTP
 - download / upload

TELNET
 - connection negotiation
 - custom telnet options
 - stdin/stdout I/O

LDAP (*2)
 - full LDAP URL support

DICT
 - extended DICT URL support

FILE
 - URL support
 - "uploads"
 - resume

SMTP
 - authentication: Plain, Login, CRAM-MD5, Digest-MD5 and NTLM (*9)
 - send mail
 - mail from support
 - mail size support
 - mail auth support for trusted server-to-server relaying
 - multiple recipients
 - via http-proxy

SMTPS (*1)
 - implicit smtps:// support
 - explicit "STARTTLS" usage to "upgrade" plain smtp:// connections to use SSL
 - via http-proxy

POP3
 - authentication: Clear Text, APOP and SASL
 - SASL based authentication: Plain, Login, CRAM-MD5, Digest-MD5 and
   NTLM (*9)
 - list e-mails
 - retrieve e-mails
 - enhanced command support for: CAPA, DELE, TOP, STAT, UIDL and NOOP
 - via http-proxy

POP3S (*1)
 - implicit pop3s:// support
 - explicit "STLS" usage to "upgrade" plain pop3:// connections to use SSL
 - via http-proxy

IMAP
 - authentication: Clear Text and SASL
 - select mailbox
 - basic fetch e-mail support
 - SASL based authentication: Plain, Login, CRAM-MD5, Digest-MD5 and
   NTLM (*9)
 - via http-proxy

IMAPS (*1)
 - implicit imaps:// support
 - explicit "STARTTLS" usage to "upgrade" plain imap:// connections to use SSL
 - via http-proxy

FOOTNOTES
=========

*1 = requires OpenSSL, GnuTLS, NSS, yassl, axTLS, PolarSSL, schannel (native
       Windows), Secure Transport (native iOS/OS X)  or qssl (native IBM i)
  *2 = requires OpenLDAP
  *3 = requires a GSSAPI-compliant library, such as Heimdal or similar.
  *4 = requires FBopenssl
  *5 = requires a krb4 library, such as the MIT one or similar.
  *6 = requires c-ares
  *7 = requires OpenSSL or NSS, as GnuTLS only supports SSLv3 and TLSv1
  *8 = requires libssh2
  *9 = requires OpenSSL, GnuTLS, NSS, yassl or SSPI (native Windows)

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