picotcp udp updates

tests/api_test/udpclient6.c

@@ -12,63 +12,32 @@
 
 int main(int argc, char* argv[])
 {
-   int sock;
    int status;
    struct addrinfo sainfo, *psinfo;
-   struct sockaddr_in6 sin6;
-   socklen_t sin6len;
+   struct hostent *server;
    char buffer[MAXBUF];
 
-   sin6len = sizeof(struct sockaddr_in6);
+   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);
 
-   memset(&sin6, 0, sizeof(struct sockaddr_in6));
-   sin6.sin6_port = htons(0);
-   sin6.sin6_family = AF_INET6;
-   sin6.sin6_addr = in6addr_any;
+    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);
 
-   status = bind(sock, (struct sockaddr *)&sin6, sin6len);
-
-   if(-1 == status)
-     perror("bind"), exit(1);
-
-   memset(&sainfo, 0, sizeof(struct addrinfo));
-   memset(&sin6, 0, sin6len);
-
-   sainfo.ai_flags = 0;
-   sainfo.ai_family = PF_INET6;
-   sainfo.ai_socktype = SOCK_DGRAM;
-   sainfo.ai_protocol = IPPROTO_UDP;
-   status = getaddrinfo("ip6-localhost", argv[1], &sainfo, &psinfo);
-
-   switch (status) 
-     {
-      case EAI_FAMILY: printf("family\n");
-        break;
-      case EAI_SOCKTYPE: printf("stype\n");
-        break;
-      case EAI_BADFLAGS: printf("flag\n");
-        break;
-      case EAI_NONAME: printf("noname\n");
-        break;
-      case EAI_SERVICE: printf("service\n");
-        break;
-     }
    sprintf(buffer,"Ciao");
 
-   status = sendto(sock, buffer, strlen(buffer), 0,
-                     (struct sockaddr *)psinfo->ai_addr, sin6len);
+   status = sendto(sock, buffer, strlen(buffer), 0, (const struct sockaddr *)&serv_addr, sizeof(serv_addr));
    printf("buffer : %s \t%d\n", buffer, status);
 
-   // free memory
-   freeaddrinfo(psinfo);
-   psinfo = NULL;
-
-   shutdown(sock, 2);
    close(sock);
    return 0;
 }