Questions tagged [connection]
Refers to a connection used to transfer data between two endpoints, such as between a client and a web, database, web service or other server.
connection
10,309
questions
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 ...
398
votes
22
answers
231k
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Artificially create a connection timeout error
I've had a bug in our software that occurs when I receive a connection timeout. These errors are very rare (usually when my connection gets dropped by our internal network). How can I generate this ...
386
votes
16
answers
1.1m
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How to connect to MySQL from the command line
How can you connect to MySQL from the command line in a Mac? (i.e. show me the code)
I'm doing a PHP/SQL tutorial, but it starts by assuming you're already in MySQL.
361
votes
27
answers
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Login to Microsoft SQL Server Error: 18456
I am getting this error while trying to connect to the SQL Server.
Microsoft SQL Server Error: 18456
Can anybody tell me what the error code means?
322
votes
9
answers
838k
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MySQL show status - active or total connections?
When I run show status like 'Con%' it shows the number of connections, which is 9972 and constantly growing. Is this an active number of connections or connections made in total?
272
votes
21
answers
461k
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No internet connection on WSL Ubuntu (Windows Subsystem for Linux) [closed]
Recently I installed WSL Ubuntu 18.04 on my Windows machine, but nothing seems to work properly, because I have no internet access.
I tried a few commands and sudo apt update says 'Connection failed' ...
245
votes
2
answers
255k
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What is the difference between connection and read timeout for sockets?
3 questions:
What is the difference between connection and read timeout for sockets?
What does connection timeout set to "infinity" mean? In what situation can it remain in an infinitive loop? and ...
241
votes
2
answers
359k
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How to create user for a db in postgresql? [closed]
I have installed PostgreSQL 8.4 on my CentOS server and connected to root user from shell and accessing the PostgreSQL shell.
I created the database and user in PostgreSQL.
While trying to connect ...
188
votes
22
answers
696k
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How do I start Mongo DB from Windows?
I have installed MongoDB on my Windows 7 (64 bit) machine. I have created the path data/db too but when I tried to start mongodb using the command 'C:\mongodb\bin\mongod.exe', it is not starting. It ...
186
votes
17
answers
1.2m
views
java.net.SocketException: Connection reset
I am getting the following error trying to read from a socket. I'm doing a readInt() on that InputStream, and I am getting this error. Perusing the documentation suggests that the client part of the ...
167
votes
16
answers
389k
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How to detect the physical connected state of a network cable/connector?
In a Linux environment, I need to detect the physical connected or disconnected state of an RJ45 connector to its socket. Preferably using BASH scripting only.
The following solutions which have ...
160
votes
10
answers
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Using R to download zipped data file, extract, and import data
@EZGraphs on Twitter writes:
"Lots of online csvs are zipped. Is there a way to download, unzip the archive, and load the data to a data.frame using R? #Rstats"
I was also trying to do this today, ...
157
votes
16
answers
395k
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Python [Errno 98] Address already in use
In my Python socket program, I sometimes need to interrupt it with Ctrl-C. When I do this, it does close the connection using socket.close().
However, when I try to reopen it I have to wait what ...
155
votes
8
answers
80k
views
iPhone Simulator - Simulate a slow connection?
Is there a way to slow down the internet connection to the iPhone Simulator, so as to mimic how the App might react when you are in a slow spot on the cellular network?
155
votes
16
answers
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"The underlying connection was closed: An unexpected error occurred on a send." With SSL Certificate
Issue
I get this exception
The underlying connection was closed: An unexpected error occurred on a send.
in my logs, and it is breaking our OEM integration with our e-mail marketing system at random ...