[3] [CITE[W3CLIST]] にも掲載されています。

[1]
[SAMP(URI)[tcp://host.dom:21]]

[CITE[Appendix 1 - Values]] <http://www.rebol.com/docs/core23/rebolcore-16.html#section-2.13.2>




[FIG(quote)[
[FIGCAPTION[
[2] [CITE@en[FFmpeg Protocols Documentation]]
([TIME[2017-01-22 02:22:36 +09:00]])
<https://ffmpeg.org/ffmpeg-protocols.html#tcp>
]FIGCAPTION]

> Transmission Control Protocol.
> The required syntax for a TCP url is:
> tcp://hostname:port'''['''?options''']'''
> options contains a list of &-separated options of the form key=val.

]FIG]