Initial commit

kapitel17/unix-socket-client.c

@@ -0,0 +1,48 @@
+#define _XOPEN_SOURCE 700
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <errno.h>
+#define MAXLEN 32
+
+int main(void)
+{
+    const char sockname[] = "/tmp/tidssocket";
+    int fd;
+    struct sockaddr_un addr;
+    char recvbuffer[MAXLEN];
+
+    /* skapa en socket fildeskriptor */
+    fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if ( fd == -1 )
+    {
+        perror("Create socket failed");
+        return 1;
+    }
+    /* sätt adressfamiljen och socket-filen */
+    addr.sun_family = AF_UNIX;
+    strcpy(addr.sun_path, sockname);
+
+    /* anslut till servern */
+    if ( (connect(fd, (const struct sockaddr*) &addr, 
+        sizeof(struct sockaddr_un))) == -1 )
+    {
+        perror("Can't connect");
+        fprintf(stderr, "The server is down?\n");
+        return 1;
+    }
+    /* läs tiden från servern */
+    if ( (read(fd, recvbuffer, MAXLEN)) == -1 )
+    {
+        perror("Can't read");
+        return 1;
+    }
+    printf("Server time is: %s", recvbuffer);
+    write(fd, "Thank you for the time", 23);
+    return 0;
+}