My most humble apologies! I didn't notice that you were running test1
again after the first connection.
You must set a socket option on the socket that tells bind() to reuse
the address. You can do this like so, AFTER creating the socket and
BEFORE binding it:
int reuse;
reuse = 1;
setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse));
See setsockopt(2) for more info. Once again please forgive my
a-little-too-quick-ness today.
Scott
Stephen Inkpen wrote:
>
> When I run this the first time I can telnet into the port '5000' and connect.
> But after disconnecting I can't connect again afterwards.... Is there some
> sort of timeout thing or something?
>
> ---------------screen insert--------------------
> beta:/mnt/coding/network$ ./test1 &
> [1] 1617
> beta:/mnt/coding/network$ telnet beta 5000
> Trying 192.168.1.4...
> Connected to beta.
> Escape character is '^]'.
> helloConnection closed by foreign host.
> [1]+ Done ./test1
> beta:/mnt/coding/network$ ./test1 &
> [1] 1619
> beta:/mnt/coding/network$ telnet beta 5000
> Trying 192.168.1.4...
> telnet: Unable to connect to remote host: Connection refused
> beta:/mnt/coding/network$
> --------------------------------------------
>
> Here is my code:
>
> ----------------------------------------------------------
> #include <string.h>
> #include <sys/socket.h>
> #include <sys/types.h>
> #include <netinet/in.h>
>
> #define PORT 5000
>
> int main()
> {
> struct sockaddr_in local_addr;
> struct sockaddr_in remote_addr;
> int file,remote_file,size,length;
> char *response = "hello";
>
> file = socket(AF_INET,SOCK_STREAM,0);
> if (file == -1)
> printf("No socket call work");
>
> local_addr.sin_family = AF_INET;
> local_addr.sin_port = htons(PORT);
> local_addr.sin_addr.s_addr = inet_addr("192.168.1.4");
> memset(&(local_addr.sin_zero),0,8);
>
> if (bind(file, (struct sockaddr *) &local_addr, sizeof(struct sockaddr)) == -1)
> printf("Bind no work");
>
> listen(file,5);
> size = sizeof(struct sockaddr_in);
> remote_file = accept(file, (struct sockaddr *) &remote_addr, &size);
>
> length = strlen(response);
> send(remote_file,response,length, 0);
>
> close(file);
> close(remote_file);
> }
>
> -----------------------------------------------------
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