improved testing and connection handling

test/dumb/udpclient6.cpp

@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#define MAXBUF 65536
+
+int main(int argc, char* argv[])
+{
+   int status;
+   struct addrinfo sainfo, *psinfo;
+   struct hostent *server;
+   char buffer[MAXBUF];
+
+   int sock, portno, n;
+   struct sockaddr_in6 serv_addr;
+
+   if(argc < 2)
+     printf("Specify a port number\n"), exit(1);
+
+   sock = socket(PF_INET6, SOCK_DGRAM,0);
+
+    portno = atoi(argv[2]);
+    server = gethostbyname2(argv[1],AF_INET6);
+    memset((char *) &serv_addr, 0, sizeof(serv_addr));
+    serv_addr.sin6_flowinfo = 0;
+    serv_addr.sin6_family = AF_INET6;
+    memmove((char *) &serv_addr.sin6_addr.s6_addr, (char *) server->h_addr, server->h_length);
+    serv_addr.sin6_port = htons(portno);
+
+   sprintf(buffer,"Ciao");
+
+   status = sendto(sock, buffer, strlen(buffer), 0, (const struct sockaddr *)&serv_addr, sizeof(serv_addr));
+   printf("buffer : %s \t%d\n", buffer, status);
+
+   close(sock);
+   return 0;
+}