Im not very experienced with C so this is probably a basic question. I have a script that opens up 5 sockets, it then runs through a loop and on a given event reconnects to the relevant socket and sends some data. The socket to be reconnected to is kept track of with a 'count' variable. The sockets are named s0,s1,s2 etc. This is the code I have to send the data:
Instead of this I simply want to use:
write(s+count,"some data",9)
But how do I append the count integer onto the 's'
Hello all,
How does the Solaris identifies the controller subscript ? ( like c0txdxs0 or c1txdxsx ?? )
I have a unix box ( Ultra 30) running with 2.5.1.
When I connected an external hard disk to the on-board scsi port, it got identified as c0t1dxsx...
(... (1 Reply)
Hello,
I actually try to make client-server program.
I'm using SCO OpenServer Release 5.0.0 and when I try to compile my code (by TELNET) I've got this error :
I'm just using this simple code :
and I get the same error if I use :
If someone can help me,
Thanks (2 Replies)
Hi,
I was porting ipv4 application to ipv6; i was done with TCP transports. Now i am facing problem with SCTp transport at runtime.
To test SCTP transport I am using following server and client socket programs. Server program runs fine, but client program fails giving Invalid Arguments for... (0 Replies)
Hi all,
On the server side, one socket is used for listening, the others are used for communicating with the client.
My question is: if i want to set option for socket, which socket should be set on?
If either can be set, what's the different?
Again, what's the different if set option... (1 Reply)
Why does this socket function only read the first 1440 chars of the stream. Why not the whole stream ? I checked it with gdm and valgrind and everything seems correct...
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include... (3 Replies)
Dear Experts,
i am compiling my code in suse 4.1 which is compiling fine,
but at runtime it is showing me for socket programming error no 88
as i searched in errno.h it is telling me socket operation on non socket,
what is the meaning of this , how to deal with this error , please... (1 Reply)
i have a file staff.txt with contents
tom|25|New York
sims|40|London
neyo|18|Moscow
i want to label the column at the top, my output should be
Names|age|city of birth
tom|25|New York
sims|40|London
neyo|18|Moscow (4 Replies)
I need clarification on whether it is okay to set socket options on a listening socket
simultaneously when it is being used in an accept() call?
Following is the scenario:-
-- Task 1 - is executing in a loop - polling a listen socket, lets call it 'fd', (whose file descriptor is global)... (2 Replies)
Dear all,
We've been asked to submit names for our documentation system. It used to be the very dry ISDL (Information Services Documentation Library)
The replacement is built on a Wiki-beastie but that doesn't help much with a name.
I wondered about an acronym based on CRAFT, so I can... (1 Reply)
Hi,
I have a folder that contains files
abc.txt
def.txt
....and so on
Inside abc.txt, I have @<TRIPOS>MOLECULE
4|Chelerythrine|abcb11_earlyIdentification_Stronginhib_washed_ligprep|sdf|1|dock
Inside def.txt, I have @<TRIPOS>MOLECULE... (6 Replies)
Discussion started by: rossi
6 Replies
LEARN ABOUT DEBIAN
systemd-socket-proxyd
SYSTEMD-SOCKET-PROXYD(8) systemd-socket-proxyd SYSTEMD-SOCKET-PROXYD(8)NAME
systemd-socket-proxyd - Bidirectionally proxy local sockets to another (possibly remote) socket.
SYNOPSIS
systemd-socket-proxyd [OPTIONS...] HOST:PORT
systemd-socket-proxyd [OPTIONS...] UNIX-DOMAIN-SOCKET-PATH
DESCRIPTION
systemd-socket-proxyd is a generic socket-activated network socket forwarder proxy daemon for IPv4, IPv6 and UNIX stream sockets. It may be
used to bi-directionally forward traffic from a local listening socket to a local or remote destination socket.
One use of this tool is to provide socket activation support for services that do not natively support socket activation. On behalf of the
service to activate, the proxy inherits the socket from systemd, accepts each client connection, opens a connection to a configured server
for each client, and then bidirectionally forwards data between the two.
This utility's behavior is similar to socat(1). The main differences for systemd-socket-proxyd are support for socket activation with
"Accept=false" and an event-driven design that scales better with the number of connections.
OPTIONS
The following options are understood:
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
--connections-max=, -c
Sets the maximum number of simultaneous connections, defaults to 256. If the limit of concurrent connections is reached further
connections will be refused.
EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise.
EXAMPLES
Simple Example
Use two services with a dependency and no namespace isolation.
Example 1. proxy-to-nginx.socket
[Socket]
ListenStream=80
[Install]
WantedBy=sockets.target
Example 2. proxy-to-nginx.service
[Unit]
Requires=nginx.service
After=nginx.service
Requires=proxy-to-nginx.socket
After=proxy-to-nginx.socket
[Service]
ExecStart=/lib/systemd/systemd-socket-proxyd /tmp/nginx.sock
PrivateTmp=yes
PrivateNetwork=yes
Example 3. nginx.conf
[...]
server {
listen unix:/tmp/nginx.sock;
[...]
Example 4. Enabling the proxy
# systemctl enable --now proxy-to-nginx.socket
$ curl http://localhost:80/
Namespace Example
Similar as above, but runs the socket proxy and the main service in the same private namespace, assuming that nginx.service has PrivateTmp=
and PrivateNetwork= set, too.
Example 5. proxy-to-nginx.socket
[Socket]
ListenStream=80
[Install]
WantedBy=sockets.target
Example 6. proxy-to-nginx.service
[Unit]
Requires=nginx.service
After=nginx.service
Requires=proxy-to-nginx.socket
After=proxy-to-nginx.socket
JoinsNamespaceOf=nginx.service
[Service]
ExecStart=/lib/systemd/systemd-socket-proxyd 127.0.0.1:8080
PrivateTmp=yes
PrivateNetwork=yes
Example 7. nginx.conf
[...]
server {
listen 8080;
[...]
Example 8. Enabling the proxy
# systemctl enable --now proxy-to-nginx.socket
$ curl http://localhost:80/
SEE ALSO systemd(1), systemd.socket(5), systemd.service(5), systemctl(1), socat(1), nginx(1), curl(1)systemd 237SYSTEMD-SOCKET-PROXYD(8)