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rtmp: drop support

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- librtmp has no test cases, makes no proper releases and has not had a
  single commit within the last year

- librtmp parses the URL itself and requires non-compliant URLs for this

- we have no RTMP tests

- RTMP was used by 2.2% of curl users (self-identified in the 2025
  survey)

Closes #20673
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Daniel Stenberg 2026-03-21 12:14:21 +01:00
parent ff28f67970
commit ceae02db04
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37 changed files with 82 additions and 740 deletions
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24
docs/URL-SYNTAX.md
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@ -141,9 +141,8 @@ curl supports the following schemes on URLs specified to transfer. They are
matched case insensitively:
`dict`, `file`, `ftp`, `ftps`, `gopher`, `gophers`, `http`, `https`, `imap`,
`imaps`, `ldap`, `ldaps`, `mqtt`, `pop3`, `pop3s`, `rtmp`, `rtmpe`, `rtmps`,
`rtmpt`, `rtmpte`, `rtmpts`, `rtsp`, `smb`, `smbs`, `smtp`, `smtps`, `telnet`,
`tftp`
`imaps`, `ldap`, `ldaps`, `mqtt`, `pop3`, `pop3s`, `rtsp`, `smb`, `smbs`,
`smtp`, `smtps`, `telnet`, `tftp`
When the URL is specified to identify a proxy, curl recognizes the following
schemes:
@ -209,10 +208,9 @@ only if the URL starts with a scheme.
If the port number is not specified in the URL, curl uses a default port
number based on the provide scheme:
DICT 2628, FTP 21, FTPS 990, GOPHER 70, GOPHERS 70, HTTP 80, HTTPS 443,
IMAP 143, IMAPS 993, LDAP 389, LDAPS 636, MQTT 1883, POP3 110, POP3S 995,
RTMP 1935, RTMPS 443, RTMPT 80, RTSP 554, SCP 22, SFTP 22, SMB 445, SMBS 445,
SMTP 25, SMTPS 465, TELNET 23, TFTP 69
DICT 2628, FTP 21, FTPS 990, GOPHER 70, GOPHERS 70, HTTP 80, HTTPS 443, IMAP
143, IMAPS 993, LDAP 389, LDAPS 636, MQTT 1883, POP3 110, POP3S 995, RTSP 554,
SCP 22, SFTP 22, SMB 445, SMBS 445, SMTP 25, SMTPS 465, TELNET 23, TFTP 69
# Scheme specific behaviors
@ -381,15 +379,3 @@ machine's fully qualified domain name, which you might have obtained from an
external function such as gethostname or getaddrinfo.
The default smtp port is 25. Some servers use port 587 as an alternative.
## RTMP
There is no official URL spec for RTMP so libcurl uses the URL syntax supported
by the underlying librtmp library. It has a syntax where it wants a
traditional URL, followed by a space and a series of space-separated
`name=value` pairs.
While space is not typically a "legal" letter, libcurl accepts them. When a
user wants to pass in a `#` (hash) character it is treated as a fragment and
it gets cut off by libcurl if provided literally. You have to escape it by
providing it as backslash and its ASCII value in hexadecimal: `\23`.