Contents
How to send a SOCAT broadcast from stdin?
Also as OP wrote, a port has to be chosen in advance in order to have them both use the same. The sending socket too must use -u to avoid risking to read back the answer and stealing it to the other dedicated socat command. Here’s an example in a LAN with the local system having 192.0.2.2/24 and the peer system having 192.0.2.3/24.
How to prevent port hijacking in networking-SOCAT?
This option must be set on each socket (including the first socket) prior to calling bind (2) on the socket. To prevent port hijacking, all of the processes binding to the same address must have the same effective UID.
What does SO _ REUSEPORT do in networking-SOCAT?
SO_REUSEPORT allows completely duplicate bindings by multiple processes if they all set SO_REUSEPORT before binding the port. This option permits multiple instances of a program to each receive UDP/IP multicast or broadcast datagrams destined for the bound port.
How to split a SOCAT channel into two simplex channels?
If one socat command can’t do the work due to limitations, using two socat, splitting the full-duplex communication channel into two simplex channels, will for this case. One will be used for reading back the answers, the other for sending the broadcast.
What can I do with the SOCAT command?
The command also tells the interface eth0 to accept multicast packets for the given group. Socat is a great tool for troubleshooting. It is also handy for easily making remote connections. Practically, I have used socat for remote MySQL connections.
Which is an example of a SOCAT connection?
Let’s get started with some basic examples of using socat for various connections. 1. Connect to TCP port 80 on the local or remote system: In this case, socat transfers data between STDIO (-) and a TCP4 connection to port 80 on a host named www.example.com.
Which is port does SOCAT listen and forwards?
This example listens on port 81, accepts connections, and forwards the connections to port 80 on the remote host. The above example listens on port 3307, accepts connections, and forwards the connections to a Unix socket on the remote host. 3.