Chore: NGINX demo with multi stack and multi protocol (vpp-hoststck, lwip, kernel) (tcp, udp)

Change-Id: I3feb3a88b75b8292e0d7df77e8ed41ee0e2fc0aa
Signed-off-by: swarupn <swarupnpvt@gmail.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/demo/nginx_proxy/demo-2/udpclient.c b/demo/nginx_proxy/demo-2/udpclient.c
new file mode 100644
index 0000000..76e7b05
--- /dev/null
+++ b/demo/nginx_proxy/demo-2/udpclient.c
@@ -0,0 +1,50 @@
+#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
+
+// Driver code
+int
+main ()
+{
+  int sockfd;
+  char buffer[MAXLINE];
+  char *hello = "Hello from client";
+  struct sockaddr_in servaddr;
+
+  // 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));
+
+  // Filling server information
+  servaddr.sin_family = AF_INET;
+  servaddr.sin_port = htons (PORT);
+  servaddr.sin_addr.s_addr = inet_addr ("192.168.50.20");
+
+  int n, len;
+
+  sendto (sockfd, (const char *) hello, strlen (hello),
+          MSG_CONFIRM, (const struct sockaddr *) &servaddr,
+          sizeof (servaddr));
+  printf ("Hello message sent.\n");
+
+  n = recvfrom (sockfd, (char *) buffer, MAXLINE,
+                MSG_WAITALL, (struct sockaddr *) &servaddr, &len);
+  buffer[n] = '\0';
+  printf ("Server : %s\n", buffer);
+
+  close (sockfd);
+  return 0;
+}