104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
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/*************************************************************************
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> File Name: server.c
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> Author: TianLun Song
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> Mail: songtianlun@frytea.com
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> Blog: https://blog.frytea.com
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> Created Time: Wed 13 Jan 2021 09:26:32 AM CST
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************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <sys/types.h>
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#define MAXLINE 80
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char *socket_path = "server.socket";
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int main(void)
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{
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struct sockaddr_un serun, cliun;
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socklen_t cliun_len;
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int listenfd, connfd, size;
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char buf[MAXLINE];
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int i, n;
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// SOCK_STREAM 指定 TCP
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// SOCK_DGRAM 指定 UDP
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// SOCK_RAW 原始套接字
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/*modify for udp*/
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if ((listenfd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) {
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perror("socket error");
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exit(1);
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}
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#include <sys/types.h>
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memset(&serun, 0, sizeof(serun));
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serun.sun_family = AF_UNIX;
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strcpy(serun.sun_path, socket_path);
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size = offsetof(struct sockaddr_un, sun_path) + strlen(serun.sun_path);
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/* add for udp */
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access(serun.sun_path,0);
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unlink(socket_path);
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if (bind(listenfd, (struct sockaddr *)&serun, size) < 0) {
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perror("bind error");
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exit(1);
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}
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printf("UNIX domain socket bound\n");
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/*
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* move for udp
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*
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if (listen(listenfd, 20) < 0) {
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perror("listen error");
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exit(1);
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} */
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printf("Accepting connections ...\n");
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while(1) {
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memset(buf, 0x00, sizeof buf);
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int iMsgSize = recvfrom(listenfd, buf, sizeof(buf), 0, (struct sockaddr*)&serun, &size);
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printf("Recv Msg: %s, len: %d", buf, iMsgSize);
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strcpy(buf, "Ok, i got it!");
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sendto(listenfd, buf, sizeof(buf), 0, (struct sockaddr*)&serun, size);
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sleep(1);
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/*
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cliun_len = sizeof(cliun);
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if ((connfd = accept(listenfd, (struct sockaddr *)&cliun, &cliun_len)) < 0){
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perror("accept error");
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continue;
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}
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while(1) {
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n = read(connfd, buf, sizeof(buf));
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if (n < 0) {
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perror("read error");
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break;
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} else if(n == 0) {
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printf("EOF\n");
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break;
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}
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printf("received: %s", buf);
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for(i = 0; i < n; i++) {
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buf[i] = toupper(buf[i]);
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}
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write(connfd, buf, n);
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}
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close(connfd);
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*/
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}
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close(listenfd);
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return 0;
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}
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