[Program/Tutorial] Sockets to send messages

L7Sqr · #1 27-Jul-2005, 12:27

[Name] none
[Description] Example of creating a server and client for a simple message relay
[Date of Submit] July 27, 2005
[Submitter] L7Sqr
[License] none - free to use/copy/modify
[Detail] -
[Problems/Limitations] Files are compressed with 'tar -czv' and can be uncompressed with 'tar -xzvf socket.tar.gz' (the v is optional). A makefile is included. Program compiles with -ansi flag (no errors) although that flag is not included in the make. System specifics can be found in the file headers. Designed on a Linux system. Must be able to create /tmp/sample_chat.d as-is, but that can be modified pre-compile

NOTE: Due to extension reasons, the file has been renamed socket.zip...But IT IS NOT A ZIP FORMAT!!!

Included files

ipc_server.c:
Uses the following functions:

CPP / C++ / C Code:

socket (int, int, int);
unlink (const char *);
bind (int, struct sockaddr *, socklen_t);
listen (int, int)
accept (int, struct sockaddr *, socklen_t *);
select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
recv (int, void *, size_t, int);
close (int);

ipc_client.c:
Uses the following functions:

CPP / C++ / C Code:

socket (int, int, int);
connect (int, const struct sockaddr *,  socklen_t);
write (int, void *, size_t);
close (int);

sample_ipc.h:
Containes the following (all of which can be 'tweaked')

CPP / C++ / C Code:

#define LISTENQ 10
#define path "/tmp/sample_chat.d"

typedef struct {
   char name[20];
   char msg[255];
} message_t;

makefile:
Compiles using the following

CPP / C++ / C Code:

cc -o server -Wall -W -pedantic -g ipc_server.c
cc -o client -Wall -W -pedantic -g ipc_client.c

Use
Open two consoles. In the directory containing the executables run ./server in one and ./client in the other.

Sample output:
Console #1: (client)

CPP / C++ / C Code:

[CLIENT] : I am the client\n
[CLIENT] : Sending a test\n
[CLIENT] : ^C

Console #2: (server)

CPP / C++ / C Code:

[SERVER] Name: 'Client'
[SERVER] Data: I am the client
-------------
[SERVER] Name: 'Client'
[SERVER] Data: Sending a test
recv error...Aborting

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