linux下tcp服务程序

linux下tcp服务程序如果开发者对于本文件有需要的可以参考。
#include
#include
#include
#include
#include
#include

void error_handling(char *message);

int main(int argc, char *argv[])
{
int serv_sock;
int clnt_sock;

struct sockaddr_in serv_addr;
struct sockaddr_in clnt_addr;
socklen_t clnt_addr_size;

char message[] = "Hello world!";

if (argc != 2)
{
printf("Usage: %s \n", argv[0]);
exit(1);
}

serv_sock = socket(AF_INET, SOCK_STREAM, 0);
if (serv_sock == -1)
error_handling("sock() error");

memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(atoi(argv[1]));

if (bind(serv_sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
error_handling("bind() error");

if (listen(serv_sock, 5) == -1)
error_handling("listen() error");

clnt_addr_size = sizeof(clnt_addr);
clnt_sock = accept(serv_sock, (struct sockaddr *)&clnt_addr, &clnt_addr_size);
if (clnt_sock == -1)
error_handling("accept() error");

write(clnt_sock, message, sizeof(message));
close(clnt_sock);
close(serv_sock);

return 0;
}

void error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}