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psql: FATAL: Ident authentication failed for user “postgres”
...art is important: it tells the psql client that we wish to connect using a TCP connection (which is configured to use password authentication), and not by a PEER connection (which does not care about the password).
$ psql -U postgres -h localhost
...
java.net.ConnectException: Connection refused
I'm trying to implement a TCP connection, everything works fine from the server's side but when I run the client program (from client computer) I get the following error:
...
When is TCP option SO_LINGER (0) required?
...TIME_WAIT state, tying up all the available resources on a server.
When a TCP connection is closed cleanly, the end that initiated the close ("active close") ends up with the connection sitting in TIME_WAIT for several minutes. So if your protocol is one where the server initiates the connection c...
windows下捕获dump之Google breakpad_client的理解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nServer。
这两个类主要用于进程间通信，包括：管道数据传输、Event通知。跟ExceptionHandler有关联的就是CrashGenerationClient，这里的client可以当作管道的client来理解。ExceptionHandler已经做了异常处理初始化，而进程外dump的生成是另外...
How to grant remote access permissions to mysql server for user?
...pe (and any routers in between) as to how to open up the connection. Open TCP port 3306 inbound, and give it a similar access rule for external machines (all/subnet/single IP/etc.).
share
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psql: FATAL: Peer authentication failed for user “dev”
...t database user ::1/128 md5
to get TCP/IP connection on loopback interface (both IPv4 and IPv6) for specified database and user.
After changes you have to restart postgres or reload it's configuration.
Restart that should work in modern RHEL/Debian based dist...
how to find host name from IP with out login to the host
...ease exists for a client, doesn't mean it's still being used.
NetBIOS for TCP/IP (NBT) was used for decades to perform name resolution, but has since been replaced by LLMNR for name resolution (part of zeroconf on Windows). This legacy system can still be queried with the nbtstat (Windows) or nmblo...
Connect Java to a MySQL database
...lved it, then you've a problem in your network/DNS/hosts config.
port: The TCP/IP port where MySQL server listens on. This is by default 3306.
databasename: The name of the database you'd like to connect to. That's javabase.
So the final URL should look like:
jdbc:mysql://localhost:3306/javabase
...
What is the most accurate way to retrieve a user's correct IP address in PHP?
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@rubenrp81 The TCP socket handler is the only canonical source, everything else is attacker-controlled. The code above is an attacker's dream.
– rook
Feb 1 '16 at 11:20
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What ports does RabbitMQ use?
....0.0.1)
Host is up (0.00041s latency).
PORT STATE SERVICE
443/tcp open https
5672/tcp open amqp
15672/tcp open unknown
35102/tcp open unknown
59440/tcp open unknown
Oh look, 5672, and 15672
Use netstat:
netstat -lntu
Active Internet connections (only servers)...