1 files changed, 55 insertions, 0 deletions
diff --git a/demo/nginx_proxy/demo-2/udpserver.c b/demo/nginx_proxy/demo-2/udpserver.c
new file mode 100644
index 0000000..456c7fc
--- /dev/null
+++ b/demo/nginx_proxy/demo-2/udpserver.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+#define PORT     53
+#define MAXLINE 1024
+
+int
+main ()
+{
+  int sockfd;
+  char buffer[MAXLINE];
+  char *hello = "Hello from server";
+
+  struct sockaddr_in servaddr, cliaddr;
+  char name[128] = { 0 };
+
+  // Creating socket file descriptor
+  if ((sockfd = socket (AF_INET, SOCK_DGRAM, 0)) < 0)
+    {
+      perror ("socket creation failed");
+      exit (EXIT_FAILURE);
+    }
+
+  memset (&servaddr, 0, sizeof (servaddr));
+  memset (&cliaddr, 0, sizeof (cliaddr));
+
+  // Filling server information
+  servaddr.sin_family = AF_INET;        // IPv4
+  servaddr.sin_addr.s_addr = inet_addr ("182.167.50.30");
+  servaddr.sin_port = htons (PORT);
+
+  if (bind (sockfd, (const struct sockaddr *) &servaddr,
+            sizeof (servaddr)) < 0)
+    {
+      perror ("bind failed");
+      exit (EXIT_FAILURE);
+    }
+
+  int len, n;
+  n = recvfrom (sockfd, (char *) buffer, MAXLINE,
+                MSG_WAITALL, (struct sockaddr *) &cliaddr, &len);
+  buffer[n] = '\0';
+  (void) gethostname (name, 127);
+  printf ("Client : %s \n", buffer);
+  sendto (sockfd, (const char *) hello, strlen (hello),
+          MSG_CONFIRM, (const struct sockaddr *) &cliaddr, len);
+  printf ("%s\n", hello);
+  return 0;
+}