Questions tagged [port]
A port is a communication end-point in the context of network communications or an interaction point for inter-component interactions. Do not use this tag for software ports from one platform or language to another, but use the tag "porting" instead.
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How do I find out which process is listening on a TCP or UDP port on Windows? [closed]
How do I find out which process is listening on a TCP or UDP port on Windows?
- 351k
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8
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What is the difference between "expose" and "publish" in Docker?
I'm experimenting with Dockerfiles, and I think I understand most of the logic. However, I don't see the difference between "exposing" and "publishing" a port in this context.
All the tutorials I ...
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363
votes
17
answers
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Can two applications listen to the same port?
Can two applications on the same machine bind to the same port and IP address? Taking it a step further, can one app listen to requests coming from a certain IP and the other to another remote IP?
I ...
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How to configure port for a Spring Boot application
How do I configure the TCP/IP port listened on by a Spring Boot application, so it does not use the default port of 8080.
- 62.6k
301
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9
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How to open a specific port such as 9090 in Google Compute Engine
I have 2 Google Compute Engine instances and I want to open port 9090 in both the instances. I think we need to add some firewall rules.
Can you tell me how can I do that?
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What is the difference between a port and a socket?
This was a question raised by one of the Software Engineers in my organisation. I'm interested in the broadest definition.
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35
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How to kill a process running on particular port in Linux?
I tried to close the tomcat using ./shutdown.sh from tomcat /bin directory. But found that the server was not closed properly. And thus I was unable to restartMy tomcat is running on port 8080.
I ...
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How do I assign a port mapping to an existing Docker container?
I'm not sure if I've misunderstood something here, but it seems like it's only possible to set port mappings by creating a new container from an image. Is there a way to assign a port mapping to an ...
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26
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Accessing localhost:port from Android emulator
I'm running a web service on my local machine that runs at localhost:54722.
I want to call the service from an app running in the Android emulator.
I read that using 10.0.2.2 in the app would access ...
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308
votes
3
answers
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What is the theoretical maximum number of open TCP connections that a modern Linux box can have
Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections?
I understand that the number of ephemeral ports (<65536) limits the number of connections from one ...
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416
votes
19
answers
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Get protocol, domain, and port from URL
I need to extract the full protocol, domain, and port from a given URL. For example:
https://localhost:8181/ContactUs-1.0/contact?lang=it&report_type=consumer
>>>
https://localhost:8181
- 5,893
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Sockets: Discover port availability using Java
How do I programmatically determine the availability of a port in a given machine using Java?
i.e given a port number, determine whether it is already being used or not?.
- 1,471
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3
answers
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What is the meaning of SO_REUSEADDR (setsockopt option) - Linux? [duplicate]
From the man page:
SO_REUSEADDR Specifies that the rules
used in validating addresses supplied
to bind() should allow reuse of local
addresses, if this is supported by the
protocol. This ...
- 1,211
461
votes
5
answers
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
I understand the basics of how ports work. However, what I don't get is how multiple clients can simultaneously connect to say port 80. I know each client has a unique (for their machine) port. Does ...
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7
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What is the difference between ports 465 and 587? [closed]
These ports 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them?
- 13.3k