diff --git a/server.c b/server.c new file mode 100644 index 0000000..a01117d --- /dev/null +++ b/server.c @@ -0,0 +1,80 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define PORT 8888 +#define BUFF_SIZE 2048 +#define MAX_CLIENTS 10 + +typedef struct { + int fd; + struct sockaddr_in clients[MAX_CLIENTS + 1]; +} DATA; + +void *process_clients(void *p) { + DATA *data = (DATA *)p; + char buf[BUFF_SIZE + 1]; + + while (1) { + off_t ret = read(STDIN_FILENO, buf, sizeof(buf)); + if (ret <= 0) + continue; + + socklen_t len = sizeof(data->clients[0]); + for (size_t i = 0; i < MAX_CLIENTS; i++) + sendto(data->fd, buf, ret, 0, (struct sockaddr *)&data->clients[i], len); + } +} + +int main(void) { + signal(SIGPIPE, SIG_IGN); + + int fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) + goto ERROR_WITHOUTCLOSE; + + struct timeval tv = {.tv_sec = 1, .tv_usec = 0}; + if (setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) < 0) + goto ERROR; + + int reuse = 1; + if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(int)) < 0) + goto ERROR; + + static struct sockaddr_in addr; + addr.sin_family = AF_INET; + addr.sin_port = htons(PORT); + addr.sin_addr.s_addr = htonl(INADDR_ANY); + if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) + goto ERROR; + + static DATA data; + data.fd = fd; + + pthread_t td; + pthread_create(&td, NULL, process_clients, (void *)&data); + + int last = 0; + char buf[25]; + + socklen_t len = sizeof(data.clients[last]); + while (1) { + if (recvfrom(fd, buf, sizeof(buf), 0, (struct sockaddr *)&data.clients[last], &len) > 0) + if (last <= MAX_CLIENTS) + last++; + } + +ERROR: + close(fd); + +ERROR_WITHOUTCLOSE: + fprintf(stderr, "streamer: %s\n", strerror(errno)); + return 1; +}