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Related to URI scheme: Uniform Resource Identifier
URI schemeAn application-level protocol used to obtain resources on the Internet. Following are some of the common URI schemes, all of which ride over TCP/IP. See URI and URL.
URI SCHEMEPrefix To gain access to http: Web server https: secure Web server ftp: file server im: instant messaging itms: iTunes streaming news: Usenet newsgroups nntp: Usenet newsgroups mailto: send email (SMTP) imap: IMAP mailbox pop: POP mailbox sip: voice over IP (VoIP) sips: secure VoIP h323: H.323 videoconference ldap: directory request telnet: run program nfs: network file system wais: WAIS server gopher: Gopher server file: local file on host