linux 进程间通信系列2，使用unix_socket

关键点：使用一个临时的文件，进行信息的互传。

  s_un.sun_family = af_unix;   strcpy(s_un.sun_path, "/tmp/afunix_text");

#include <stdio.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <sys/un.h>  #define filepath "/tmp/afunix_text"  int main(){   int s0, sock;   sockaddr_un s_un;   sockaddr_un s_un_accept;   socklen_t addrlen;    s0 = socket(af_unix, sock_stream, 0);   if(s0 < 0){     perror("socket");     return 1;   }    s_un.sun_family = af_unix;   strcpy(s_un.sun_path, filepath);    if(bind(s0, (sockaddr*)&s_un, sizeof(s_un)) != 0){     perror("bind");     return 1;   }    if(listen(s0, 5) != 0){     perror("listen");     return 1;   }    addrlen = sizeof(s_un_accept);   sock = accept(s0, (sockaddr*)&s_un_accept, &addrlen);   if(sock < 0){     perror("accept");     return 1;   }    printf("after acceptn");    write(sock, "the msg is send from server", 27);   close(sock);   close(s0);    unlink(filepath);    return 0; } 

#include <stdio.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <sys/un.h>  int main(){   int sock;   sockaddr_un s_un;   int n;   char buf[128];    sock = socket(af_unix, sock_stream, 0);   if(sock < 0){     perror("socket");     return 1;   }    s_un.sun_family = af_unix;   strcpy(s_un.sun_path, "/tmp/afunix_text");    if(connect(sock, (sockaddr*)&s_un, sizeof(s_un)) != 0){     perror("connect");     return 1;   }   printf("after connectn");   memset(buf, 0, sizeof(buf));   n = read(sock, buf, sizeof(buf));   if(n < 0){     perror("read");     return 1;   }    printf("%sn", buf);   close(sock);   return 0; } 

#include <stdio.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/un.h>  int main(){   int sock;   sockaddr_un addr;   socklen_t addrlen;    sock = socket(af_unix, sock_dgram, 0);   addr.sun_family = af_unix;   strcpy(addr.sun_path, "/tmp/afu_dgram");    int n = sendto(sock, "hellon", 6, 0, (sockaddr*)&addr, sizeof(addr));   printf("send datan");   close(sock);   return 0; } 

github源代码

#include <stdio.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/un.h>  int main(){   int sock;   sockaddr_un addr;   socklen_t addrlen;   char buf[1024];   int n;    sock = socket(af_unix, sock_dgram, 0);    addr.sun_family = af_unix;   strcpy(addr.sun_path, "/tmp/afu_dgram");    bind(sock, (sockaddr*)&addr, sizeof(addr));    while(1){     memset(buf, 0, sizeof(buf));     n = recv(sock, buf, sizeof(buf) - 1, 0);     printf("recv:%sn", buf);   }    close(sock);   return 0; } 

github源代码