Relation between port numbers, sockets, processes, application layer protocols and network applications
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
I'm trying to find a sensible relation between the terms in the title above. I think I've come across some contradictory statements when reading on the topic (Computer Networking: A Top Down Approach). I'd be very grateful for help on rectifying the following statements/conclusions:
A single port number corresponds to a single socket, which corresponds to a single application layer protocol, which corresponds to a single process.
Network applications propagate across several port numbers/ sockets & potentially across several application layer protocols. Why? A network application consists of pairs of processes which send messages to each other over a network, and these are equivalent to port numbers / sockets / protocols. Plural implies there could be several.
Is distinguishing between processes which correspond to port number / socket, and (less significant) processes run by network applications the answer to 2.? By 'distinguishing' I mean as opposed to saying that 'process' is the same thing in every context.
Could I say that port number = socket = application layer protocol = process, and process can consist of many network applications which each have their own processes used for communication between end systems? (by = i mean one-to-one correspondence)
networking
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
add a comment |
I'm trying to find a sensible relation between the terms in the title above. I think I've come across some contradictory statements when reading on the topic (Computer Networking: A Top Down Approach). I'd be very grateful for help on rectifying the following statements/conclusions:
A single port number corresponds to a single socket, which corresponds to a single application layer protocol, which corresponds to a single process.
Network applications propagate across several port numbers/ sockets & potentially across several application layer protocols. Why? A network application consists of pairs of processes which send messages to each other over a network, and these are equivalent to port numbers / sockets / protocols. Plural implies there could be several.
Is distinguishing between processes which correspond to port number / socket, and (less significant) processes run by network applications the answer to 2.? By 'distinguishing' I mean as opposed to saying that 'process' is the same thing in every context.
Could I say that port number = socket = application layer protocol = process, and process can consist of many network applications which each have their own processes used for communication between end systems? (by = i mean one-to-one correspondence)
networking
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49
add a comment |
I'm trying to find a sensible relation between the terms in the title above. I think I've come across some contradictory statements when reading on the topic (Computer Networking: A Top Down Approach). I'd be very grateful for help on rectifying the following statements/conclusions:
A single port number corresponds to a single socket, which corresponds to a single application layer protocol, which corresponds to a single process.
Network applications propagate across several port numbers/ sockets & potentially across several application layer protocols. Why? A network application consists of pairs of processes which send messages to each other over a network, and these are equivalent to port numbers / sockets / protocols. Plural implies there could be several.
Is distinguishing between processes which correspond to port number / socket, and (less significant) processes run by network applications the answer to 2.? By 'distinguishing' I mean as opposed to saying that 'process' is the same thing in every context.
Could I say that port number = socket = application layer protocol = process, and process can consist of many network applications which each have their own processes used for communication between end systems? (by = i mean one-to-one correspondence)
networking
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
I'm trying to find a sensible relation between the terms in the title above. I think I've come across some contradictory statements when reading on the topic (Computer Networking: A Top Down Approach). I'd be very grateful for help on rectifying the following statements/conclusions:
A single port number corresponds to a single socket, which corresponds to a single application layer protocol, which corresponds to a single process.
Network applications propagate across several port numbers/ sockets & potentially across several application layer protocols. Why? A network application consists of pairs of processes which send messages to each other over a network, and these are equivalent to port numbers / sockets / protocols. Plural implies there could be several.
Is distinguishing between processes which correspond to port number / socket, and (less significant) processes run by network applications the answer to 2.? By 'distinguishing' I mean as opposed to saying that 'process' is the same thing in every context.
Could I say that port number = socket = application layer protocol = process, and process can consist of many network applications which each have their own processes used for communication between end systems? (by = i mean one-to-one correspondence)
networking
networking
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
asked Nov 22 '18 at 14:28
Marek ZakrzewskiMarek Zakrzewski
186
186
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49
add a comment |
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53433114%2frelation-between-port-numbers-sockets-processes-application-layer-protocols-a%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53433114%2frelation-between-port-numbers-sockets-processes-application-layer-protocols-a%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Did you read this answer?
– Ron Maupin
Nov 22 '18 at 14:49