IPv6 working, just barely

tests/api_test/server6.c

@@ -0,0 +1,82 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include <arpa/inet.h>
+
+void error(char *msg) {
+    perror(msg);
+    exit(1);
+}
+
+int main(int argc, char *argv[]) {
+    int sockfd, newsockfd, portno;
+    socklen_t clilen;
+    char buffer[256];
+    struct sockaddr_in6 serv_addr, cli_addr;
+    int n;
+    char client_addr_ipv6[100];
+
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s \n", argv[0]);
+        exit(0);
+    }
+
+    printf("\nIPv6 TCP Server Started...\n");
+    
+    //Sockets Layer Call: socket()
+    sockfd = socket(AF_INET6, SOCK_STREAM, 0);
+    if (sockfd < 0)
+        error("ERROR opening socket");
+
+    bzero((char *) &serv_addr, sizeof(serv_addr));
+    portno = atoi(argv[1]);
+    serv_addr.sin6_flowinfo = 0;
+    serv_addr.sin6_family = AF_INET6;
+    serv_addr.sin6_addr = in6addr_any;
+    serv_addr.sin6_port = htons(portno);
+
+    
+    //Sockets Layer Call: bind()
+    if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0)
+        error("ERROR on binding");
+
+    //Sockets Layer Call: listen()
+    listen(sockfd, 5);
+    clilen = sizeof(cli_addr);
+    
+    //Sockets Layer Call: accept()
+    newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, &clilen);
+    if (newsockfd < 0)
+        error("ERROR on accept");
+
+    //Sockets Layer Call: inet_ntop()
+    inet_ntop(AF_INET6, &(cli_addr.sin6_addr),client_addr_ipv6, 100);
+    printf("Incoming connection from client having IPv6 address: %s\n",client_addr_ipv6);
+
+    memset(buffer,0, 256);
+    
+    //Sockets Layer Call: recv()
+    n = recv(newsockfd, buffer, 255, 0);
+    if (n < 0)
+        error("ERROR reading from socket");
+
+    printf("Message from client: %s\n", buffer);
+
+    //Sockets Layer Call: send()
+    n = send(newsockfd, "Server got your message", 23+1, 0);
+    if (n < 0)
+        error("ERROR writing to socket");
+    
+    //Sockets Layer Call: close()
+    close(sockfd);
+    close(newsockfd);
+    
+    return 0;
+}

tests/api_test/tcp_server.c

@@ -11,35 +11,55 @@ int atoi(const char *str);
 int main(int argc , char *argv[])
 {
     if(argc < 2) {
-	   printf("usage: tcp_server <port>\n");
+       printf("usage: tcp_server <4/6> <port>\n");
+       printf("\t - where 4/6 represent IP version\n");
        return 0;
     }
    
-    int socket_desc, client_sock, c, read_size, port = atoi(argv[1]);
-    struct sockaddr_in server , client;
+
+    int sock, client_sock, c, read_size, ipv = atoi(argv[1]), port = atoi(argv[2]);
     char client_message[2000];
      
-    socket_desc = socket(AF_INET , SOCK_STREAM , 0);
-    if (socket_desc == -1) {
-        printf("could not create socket");
-        return 0;
+    struct sockaddr_storage server, client;
+    struct sockaddr_in6 *server6 = (struct sockaddr_in6 *)&server;
+    struct sockaddr_in *server4 = (struct sockaddr_in *)&server;
+
+    // IPV4
+    if(ipv == 4)
+    {
+        printf("ipv4 mode\n");
+        if((sock = socket(AF_INET, SOCK_STREAM , 0)) < 0) {
+            printf("could not create socket");
+            return 0;
+        }
+        server4->sin_family = AF_INET;
+        server4->sin_addr.s_addr = INADDR_ANY;
+        server4->sin_port = htons(port);
+    }
+    // IPV6
+    if(ipv == 6)
+    {
+        printf("ipv6 mode\n");
+        if((sock = socket(AF_INET6, SOCK_STREAM , 0)) < 0) {
+            printf("could not create socket");
+            return 0;
+        }
+        server6->sin6_family = AF_INET6;
+        server6->sin6_addr = in6addr_any;
+        server6->sin6_port = htons(port);
     }
      
-    server.sin_family = AF_INET;
-    server.sin_addr.s_addr = INADDR_ANY;
-    server.sin_port = htons(port);
-     
     printf("binding on port %d\n", port);
-    if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0) {
+    if( bind(sock,(struct sockaddr *)&server , sizeof(server)) < 0) {
         perror("bind failed. Error");
         return 0;
     }
     printf("listening\n");
-    listen(socket_desc , 3); 
+    listen(sock , 3); 
     printf("waiting to accept\n");
     c = sizeof(struct sockaddr_in);
     
-    client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
+    client_sock = accept(sock, (struct sockaddr *)&client, (socklen_t*)&c);
     if (client_sock < 0) {
         perror("accept failed");
         return 0;