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TCP socket problem : connect and bind
- From: Thierry Brémard <bremardt at esiee dot fr>
- To: ecos-discuss at sources dot redhat dot com
- Date: Fri, 17 Jun 2005 16:10:42 +0300
- Subject: [ECOS] TCP socket problem : connect and bind
Hello, I have the code folowing , it works fine under a cygwin
environement, it compiles fine with the ecos tools and I load it fine
on my viper card.
after a 'load -v -m ymodem'
I run: 'go'
and I have an error of connect() and of bind().
Furthermore I can ping the viper card thanks to my computer, but the
command 'ping -n 3 -h 1.1.1.2' doesn't succeed on the redboot
environement (where 1.1.1.2 is the ip of my computer), my computer is
linked with a ethernet cable to the card directly.
=> is there some functions to call before using the network ?
in my repository I have an ecos environnement build arround the 'net'
package.
**
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define SOCKET_ERROR -1
int OpenPort(int port)
{
struct sockaddr_in sin;
int sock;
unsigned char val=1;
if((sock=socket(AF_INET,SOCK_STREAM,0)) == SOCKET_ERROR) return 0;
sin.sin_port=htons((short)port);
sin.sin_addr.s_addr=0;
sin.sin_family=AF_INET;
//Allow the socket to be bound to an address which is already in
use
//
if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&val,sizeof(val))==SOCKET_E
RROR) return 0;
// (By default, a socket cannot be bound to a local address which is
already in use.)
if(bind(sock,(struct sockaddr *)&sin,sizeof(sin))==SOCKET_ERROR)
return 0;
if(listen(sock,SOMAXCONN)==SOCKET_ERROR) return 0;
return sock;
}
int connecta(short port)
{
struct sockaddr_in sin;
int sock;
if((sock=socket(AF_INET,SOCK_STREAM,0)) == SOCKET_ERROR) return 0;
sin.sin_port=htons((short)port);
sin.sin_addr.s_addr = inet_addr("147.215.40.139");
sin.sin_family=AF_INET;
//Allow the socket to be bound to an address which is already in
use
//
if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,&val,sizeof(val))==SOCKET_E
RROR) return 0;
// (By default, a socket cannot be bound to a local address which is
already in use.)
// if(bind(sock,(struct sockaddr *)&sin,sizeof(sin))==SOCKET_ERROR)
return 0;
connect(sock, (struct sockaddr *)&sin, sizeof(sin));
//if(listen(sock,SOMAXCONN)==SOCKET_ERROR) return 0;
return sock;
}
int main()
{
int sock;
int sock_client;
connecta(90);
sock = OpenPort(90);
sock_client = accept(sock, NULL, 0);
printf("client connected");
return 0;
}
**eof
Thank you
Thierry
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