repack rep

Practice/sem25.10/s_inet.c

@@ -0,0 +1,70 @@
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define FIN "exit"
+
+int main(int argc, char *argv[])
+{
+   int sock;
+   socklen_t length;
+   struct sockaddr_in server;
+   int msgsock;
+   char buf[1024];
+   int rval;
+
+   sock = socket(AF_INET, SOCK_STREAM, 0);
+   if (sock == -1)
+   {
+      perror("opening stream socket");
+      exit(1);
+   }
+
+   server.sin_family = AF_INET;
+   server.sin_addr.s_addr = htonl(INADDR_ANY);
+   if (argc == 2)
+      server.sin_port = htons(atoi(argv[1]));
+   else
+      server.sin_port = 0;
+
+   if (bind(sock, (struct sockaddr *)&server, sizeof server) == -1)
+   {
+      perror("binding stream socket");
+      exit(1);
+   }
+
+   length = sizeof server;
+   if (getsockname(sock, (struct sockaddr *)&server, &length) == -1)
+   {
+      perror("getting socket name");
+      exit(1);
+   }
+   printf("Socket port %d\n", ntohs(server.sin_port));
+
+   listen(sock, 5);
+   do
+   {
+      if ((msgsock = accept(sock, (struct sockaddr *)NULL, (socklen_t *)NULL)) == -1)
+         perror("accept");
+      else
+         do
+         {
+            memset(buf, 0, sizeof buf);
+            if ((rval = read(msgsock, buf, 1024)) == -1)
+               perror("reading stream message");
+            dprintf(1, "-[%d]\n", rval);
+            if (rval == 0)
+               printf("Connection finished\n");
+            else
+            {
+               dprintf(1, "[%s]\n", buf);
+            }
+            //         if (!strcmp(buf,FIN)) {break;}
+         } while ((rval > 0) && (strcmp(buf, FIN)));
+      close(msgsock);
+   } while (strcmp(buf, FIN));
+   exit(0);
+}