52 lines
1.8 KiB
Markdown
52 lines
1.8 KiB
Markdown
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<!-- Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. -->
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<!-- SPDX-License-Identifier: curl -->
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# PROTOCOLS
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curl supports numerous protocols, or put in URL terms: schemes. Your
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particular build may not support them all.
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## DICT
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Lets you lookup words using online dictionaries.
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## FILE
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Read or write local files. curl does not support accessing file:// URL
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remotely, but when running on Microsoft Windows using the native UNC approach
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works.
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## FTP(S)
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curl supports the File Transfer Protocol with a lot of tweaks and levers. With
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or without using TLS.
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## GOPHER(S)
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Retrieve files.
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## HTTP(S)
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curl supports HTTP with numerous options and variations. It can speak HTTP
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version 0.9, 1.0, 1.1, 2 and 3 depending on build options and the correct
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command line options.
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## IMAP(S)
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Using the mail reading protocol, curl can "download" emails for you. With or
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without using TLS.
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## LDAP(S)
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curl can do directory lookups for you, with or without TLS.
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## MQTT
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curl supports MQTT version 3. Downloading over MQTT equals "subscribe" to a
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topic while uploading/posting equals "publish" on a topic. MQTT over TLS is
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not supported (yet).
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## POP3(S)
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Downloading from a pop3 server means getting a mail. With or without using
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TLS.
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## RTMP(S)
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The **Realtime Messaging Protocol** is primarily used to serve streaming media
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and curl can download it.
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## RTSP
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curl supports RTSP 1.0 downloads.
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## SCP
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curl supports SSH version 2 scp transfers.
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## SFTP
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curl supports SFTP (draft 5) done over SSH version 2.
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## SMB(S)
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curl supports SMB version 1 for upload and download.
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## SMTP(S)
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Uploading contents to an SMTP server means sending an email. With or without
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TLS.
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## TELNET
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Telling curl to fetch a telnet URL starts an interactive session where it
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sends what it reads on stdin and outputs what the server sends it.
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## TFTP
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curl can do TFTP downloads and uploads.
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