addr.sin_port=htons(net->l_port);
addr.sin_addr.s_addr=INADDR_ANY;
- /* prevent addres in use error message */
- true=1;
- if(setsockopt(net->l_fd,SOL_SOCKET,SO_REUSEADDR,&true,sizeof(true))==-1) {
- perror("[network] setsockopt call");
- return N_ERROR;
- }
-
if(bind(net->l_fd,(struct sockaddr *)&addr,
sizeof(struct sockaddr))==-1) {
- perror("[network] bind call");
- return N_ERROR;
+ /* try harder ... */
+ true=1;
+ if(setsockopt(net->l_fd,SOL_SOCKET,SO_REUSEADDR,&true,sizeof(true))==-1) {
+ perror("[network] setsockopt call");
+ return N_ERROR;
+ }
+ puts("[network] reused address");
}
if(listen(net->l_fd,MAX_LISTEN_QUEUE)==-1) {
return N_E_IN_USE;
}
if(!(net->connection[channel].status&C_INFO_A)) {
- printf("[network] connect failed, missing configuration for channel %02d",
+ printf("[network] connect failed, missing configuration for channel %02d\n",
channel);
return N_E_NO_INFO;
}
int network_close(t_net *net,int channel) {
if(!(net->connection[channel].status&C_ESTABL)) {
- printf("[network] close failed, channel %02d not active",channel);
+ printf("[network] close failed, channel %02d not active\n",channel);
return N_E_NC;
}
return(network_manage_connection(net)); /* could be other channel too */
}
+int network_close_all(t_net *net) {
+
+ int channel;
+
+ for(channel=0;channel<MAX_CONNECTIONS;channel++)
+ if(net->connection[channel].status&C_ESTABL) network_close(net,channel);
+
+ return N_SUCCESS;
+}
+
int network_set_connection_info(t_net *net,int channel,char *ip,int port) {
if(net->connection[channel].status&C_IN_USE) {
return count;
}
+
+int network_udp_listen_init(t_net *net) {
+
+ struct sockaddr_in addr;
+
+ if((net->l_udp_fd=socket(AF_INET,SOCK_DGRAM,0))==-1) {
+ perror("[network] socket call (udp-receive)");
+ return N_ERROR;
+ }
+
+ memset(&addr,0,sizeof(struct sockaddr));
+ addr.sin_family=AF_INET;
+ addr.sin_port=htons(net->l_udp_port);
+ addr.sin_addr.s_addr=INADDR_ANY;
+ if(bind(net->l_udp_fd,(struct sockaddr *)&addr,sizeof(struct sockaddr))==-1) {
+ perror("[network] bind call (udp)");
+ return N_ERROR;
+ }
+
+ printf("[network] listening on port %d (udp)\n",net->l_udp_port);
+
+ if((net->s_udp_fd=socket(AF_INET,SOCK_DGRAM,0))==-1) {
+ perror("[network] socket call (udp-send)");
+ return N_ERROR;
+ }
+
+ return N_SUCCESS;
+}
+
+int network_udp_receive(t_net *net,int channel, unsigned char *data,int count) {
+
+ struct sockaddr_in addr;
+ socklen_t len;
+
+ if((count=recvfrom(net->l_udp_fd,data,count,0,
+ (struct sockaddr *)&addr,&len))==-1) {
+ perror("[network] recvfrom call");
+ return N_ERROR;
+ }
+
+ if(strncmp(net->connection[channel].ip,inet_ntoa(addr.sin_addr),IP_DIGITS)) {
+ printf("[network] packet from unknown: %s\n",inet_ntoa(addr.sin_addr));
+ return N_UDP_WRONG_SENDER;
+ }
+
+ return N_SUCCESS;
+}
+
+int network_udp_send(t_net *net,int channel, unsigned char *data,int size) {
+
+ int count,left;
+ struct sockaddr_in addr;
+
+ count=0;
+ left=count;
+
+ memset(&addr,0,sizeof(struct sockaddr));
+ addr.sin_family=AF_INET;
+ addr.sin_port=htons(net->l_udp_port);
+ inet_aton(net->connection[channel].ip,&(addr.sin_addr));
+
+ while(left) {
+ if((count=sendto(net->s_udp_fd,data+size-left,left,0,
+ (struct sockaddr *)&addr,sizeof(struct sockaddr)))==-1) {
+ perror("[network] sendto call");
+ return N_ERROR;
+ }
+ left-=count;
+ }
+
+ return N_SUCCESS;
+}
+
+int network_udp_shutdown(t_net *net) {
+
+ if(close(net->l_udp_fd)==-1) {
+ perror("[network] close call (udp-receive)");
+ return N_ERROR;
+ }
+
+ if(close(net->s_udp_fd)==-1) {
+ perror("[network] close call (udp-send)");
+ return N_ERROR;
+ }
+
+ return N_SUCCESS;
+}