1 struct sockaddr_un{
2     unsigned short sun_family; /*协议类型*/
3     char sun_path[108];           /*套接字文件路径*/
4 };

 1 #include<stdio.h>
 2 #include<sys/types.h>
 3 #include<unistd.h>
 4 #include<sys/socket.h>
 5 #include<arpa/inet.h>
 6 #include<netinet/in.h>
 7 #include<string.h>
 8 #include<sys/un.h>
 9 #include<stdlib.h>
10
11 #define N 64
12
13 int main(int argc, const char *argv[])
14 {
15     int sockfd;
16     struct sockaddr_un serveraddr, clientaddr;
17     char buf[N];
18     socklen_t len = sizeof(clientaddr);
19
20     sockfd = socket(AF_LOCAL, SOCK_DGRAM, 0);
21     if(sockfd < 0)
22     {
23         perror("fail to sockfd");
24         return -1;
25     }
26
27     serveraddr.sun_family = AF_LOCAL;
28     strcpy(serveraddr.sun_path, "mysocket");
29
30     if(bind(sockfd, (struct sockaddr*)&serveraddr, sizeof(serveraddr)) < 0)
31     {
32         perror("fail to bind");
33         return -1;
34     }
35
36     while(1)
37     {
38         if(recvfrom(sockfd, buf, N, 0, (struct sockaddr*)&clientaddr, &len) < 0)
39         {
40             perror("fail to recvfrom");
41             return -1;
42         }
43         if(strncmp(buf, "quit", 4) == 0)
44         {
45             break;
46         }
47         buf[strlen(buf) - 1] = '\0';
48         printf("buf:%s\n", buf);
49         strcat(buf, "++++----");
50         if(sendto(sockfd, buf, N, 0, (struct sockaddr*)&clientaddr, sizeof(clientaddr)) < 0)
51         {
52             perror("fail to sendto");
53             return -1;
54         }
55     }
56     close(sockfd);
57     return 0;
58 }

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<sys/types.h>
 4 #include<unistd.h>
 5 #include<sys/socket.h>
 6 #include<arpa/inet.h>
 7 #include<netinet/in.h>
 8 #include<sys/un.h>
 9 #include<string.h>
10
11 #define N 64
12
13 int main(int argc, const char *argv[])
14 {
15     int sockfd;
16     char buf[N];
17     struct sockaddr_un serveraddr, clientaddr;
18
19     sockfd = socket(AF_LOCAL, SOCK_DGRAM, 0);
20     if(sockfd < 0)
21     {
22         perror("fail to sockfd");
23         return -1;
24     }
25
26     serveraddr.sun_family = AF_LOCAL;
27     strcpy(serveraddr.sun_path, "mysocket");
28
29     clientaddr.sun_family = AF_LOCAL;
30     strcpy(clientaddr.sun_path, "socket");
31
32     if(bind(sockfd, (struct sockaddr*)&clientaddr, sizeof(clientaddr)) < 0)
33     {
34         perror("fail to bind");
35         return -1;
36     }
37
38     while(1)
39     {
40         printf("<client>");
41         fgets(buf, N, stdin);
42         if(sendto(sockfd, buf, N, 0, (struct sockaddr*)&serveraddr, sizeof(serveraddr)) < 0)
43         {
44             perror("fail to sendto");
45             return -1;
46         }
47         if(strncmp(buf, "quit", 4) == 0)
48         {
49             break;
50         }
51         if(recvfrom(sockfd, buf, N, 0, NULL, NULL) < 0)
52         {
53             perror("fail to recvfrom");
54             return -1;
55         }
56         printf("buf:%s\n", buf);
57     }
58     close(sockfd);
59
60     return 0;
61 }