What is the proper term for (example) hostname.tld:433 (hostname:portnumber)?
It is not just hostname, and it is not really a URL either :) same goes for 10.0.0.1:3306 etc.
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1This is not on-topic here, but what you're looking for is probably "URI". – Sebastian Wiesinger Jun 17 '14 at 08:17
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2A URI includes the mechanism used to access the resource, for example http: or ftp:, and as such doesn't really answer the question. URI schemes are defined and documented. See this W3C document for further clarification. – YLearn Jun 17 '14 at 15:36
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1It's "socket" although a "endpoint" is in vogue these days. http://en.wikipedia.org/wiki/Network_socket. – generalnetworkerror Jun 20 '14 at 08:30
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See also: https://stackoverflow.com/questions/47488910/whats-the-difference-between-endpoint-and-socket/47490978 – David J. Jun 26 '21 at 04:00
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IP address and port pair is called, Socket Address
Pair of socket addresses (10.0.0.1:123, 192.168.0.1:123) may also be called 4-tuple or 5-tuple if the protocol is specified as well (10.0.0.1:123, 192.168.0.1:123 UDP)
vhu
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2This is more true in the programming/systems world and not always as relevant in networking. In networking the IP address and port/protocol are generally distinct and specific values, and not used as a single value. – YLearn Jun 17 '14 at 15:45
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I've been writing a lot of network code over the years, and the word "endpoint" seems to be the term for "a specific port on a specific IP address".
Have a look at the Boost documentation as well as the Microsoft documentation:
http://www.boost.org/doc/libs/1_38_0/doc/html/boost_asio/reference/ip__tcp/endpoint.html
http://msdn.microsoft.com/en-us/library/bbx2eya8(v=vs.110).aspx
Carlos
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See https://stackoverflow.com/questions/47488910/whats-the-difference-between-endpoint-and-socket/47490978 -- an endpoint is a more general term than a socket; there are are non-TCP endpoints. – David J. Jun 26 '21 at 04:01
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Note that "endpoint" has a different meaning in web services. In web services, an endpoint is a complete URL. – Cameron Hudson Feb 03 '24 at 01:59
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According to the DOM/Web API it is simply host.
The host property of the URL interface is [...] the hostname, and then, if the port of the URL is nonempty, a ':', and the port of the URL.
You can see this in a browser console:
url = new URL('http://example:8080/path')
url.hostname // "example"
url.host // "example:8080"
Tamlyn
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If your use case covers the optional 'authentication' section, then this would be called an "authority".
[A URI] comprises:
...
An authority part, comprising:
- An optional authentication section of a user name and password, separated by a colon, followed by an at symbol (@)
- A "host", consisting of either a registered name (including but not limited to a hostname), or an IP address. IPv4 addresses must be in dot-decimal notation, and IPv6 addresses must be enclosed in brackets ([ ]).
- An optional port number, separated from the hostname by a colon
...
It is formalized in RFC 3986 - Uniform Resource Identifier (URI): Generic Syntax
The authority component is preceded by a double slash ("//") and is terminated by the next slash ("/"), question mark ("?"), or number sign ("#") character, or by the end of the URI.
authority = [ userinfo "@" ] host [ ":" port ]
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I would call generically describe (IPAddress, Port) as an IP Service.
If used in DNS context, then look up DNSSRV records.
If used in Socket context, then it is a Socket Address.
Another context could be use in a regular expression used in filtering Flows.
Or use in router or firewall in an access-list.
