Adding IPv6 support to the UDP transport
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@ -42,7 +42,7 @@
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/* for udp4 and udp6 */
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#ifndef UDP_FAMILY
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# define UDP_FAMILY AF_INET
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# define UDP_FAMILY PF_UNSPEC
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#endif
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@ -62,6 +62,9 @@ struct _AppTransportPlugin
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AppTransportPluginHelper * helper;
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int fd;
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struct addrinfo * ai;
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struct addrinfo * aip;
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/* output queue */
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UDPMessage * messages;
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size_t messages_cnt;
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@ -101,8 +104,7 @@ AppTransportPluginDefinition transport =
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/* functions */
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/* plug-in */
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/* udp_init */
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static int _init_address(char const * name, int * domain,
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struct sockaddr_in * sa);
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static int _init_address(UDP * udp, char const * name, int domain);
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static int _init_client(UDP * udp, char const * name);
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static int _init_server(UDP * udp, char const * name);
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static int _init_socket(UDP * udp, int domain);
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@ -117,6 +119,8 @@ static UDP * _udp_init(AppTransportPluginHelper * helper,
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return NULL;
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udp->helper = helper;
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udp->fd = -1;
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udp->ai = NULL;
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udp->aip = NULL;
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udp->messages = NULL;
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udp->messages_cnt = 0;
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switch(mode)
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@ -140,70 +144,91 @@ static UDP * _udp_init(AppTransportPluginHelper * helper,
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return udp;
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}
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static int _init_address(char const * name, int * domain,
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struct sockaddr_in * sa)
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static int _init_address(UDP * udp, char const * name, int domain)
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{
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char * p;
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char * q;
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char * r;
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struct hostent * he;
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long l = -1;
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struct addrinfo hints;
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int res = 0;
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/* obtain the name */
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if((p = strdup(name)) == NULL)
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return -error_set_code(1, "%s", strerror(errno));
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if((q = strchr(p, ':')) != NULL)
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/* FIXME wrong for IPv6 notation (should be '.' then) */
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if((q = strrchr(p, ':')) != NULL)
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{
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*(q++) = '\0';
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/* obtain the port number */
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l = strtol(q, &r, 10);
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if(q[0] == '\0' || *r != '\0' || l < 0 || l > 65535)
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if(q[0] == '\0' || *r != '\0')
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l = -error_set_code(1, "%s", strerror(EINVAL));
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}
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/* FIXME perform this asynchronously */
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if((he = gethostbyname(p)) == NULL)
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l = -error_set_code(1, "%s", hstrerror(h_errno));
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = domain;
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hints.ai_socktype = SOCK_DGRAM;
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if(l >= 0)
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res = getaddrinfo(p, q, &hints, &udp->ai);
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free(p);
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/* check for errors */
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if(l < 0)
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if(res != 0)
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{
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error_set_code(1, "%s", gai_strerror(res));
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if(udp->ai != NULL)
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freeaddrinfo(udp->ai);
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udp->ai = NULL;
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return -1;
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sa->sin_family = *domain;
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sa->sin_port = htons(l);
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memcpy(&sa->sin_addr, he->h_addr_list[0], sizeof(sa->sin_addr));
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return 0;
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}
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return (udp->ai != NULL) ? 0 : -1;
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}
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static int _init_client(UDP * udp, char const * name)
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{
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int domain = UDP_FAMILY;
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struct sockaddr_in sa;
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/* obtain the remote address */
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if(_init_address(name, &domain, &sa) != 0)
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if(_init_address(udp, name, UDP_FAMILY) != 0)
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return -1;
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for(udp->aip = udp->ai; udp->aip != NULL; udp->aip = udp->aip->ai_next)
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{
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/* create the socket */
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if(_init_socket(udp, domain) != 0)
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return -1;
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if(_init_socket(udp, udp->aip->ai_family) != 0)
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continue;
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/* listen for incoming messages */
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event_register_io_read(udp->helper->event, udp->fd,
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(EventIOFunc)_udp_callback_read, udp);
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break;
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}
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if(udp->aip == NULL)
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{
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freeaddrinfo(udp->ai);
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udp->ai = NULL;
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return -1;
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}
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return 0;
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}
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static int _init_server(UDP * udp, char const * name)
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{
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int domain = UDP_FAMILY;
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struct sockaddr_in sa;
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/* obtain the local address */
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if(_init_address(name, &domain, &sa) != 0)
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if(_init_address(udp, name, UDP_FAMILY) != 0)
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return -1;
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for(udp->aip = udp->ai; udp->aip != NULL; udp->aip = udp->aip->ai_next)
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{
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/* create the socket */
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if(_init_socket(udp, domain) != 0)
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return -1;
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if(_init_socket(udp, udp->aip->ai_family) != 0)
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continue;
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/* listen for incoming messages */
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event_register_io_read(udp->helper->event, udp->fd,
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(EventIOFunc)_udp_callback_read, udp);
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break;
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}
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if(udp->aip == NULL)
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{
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freeaddrinfo(udp->ai);
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udp->ai = NULL;
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return -1;
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}
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return 0;
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}
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@ -211,7 +236,7 @@ static int _init_socket(UDP * udp, int domain)
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{
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int flags;
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if((udp->fd = socket(domain, SOCK_STREAM, 0)) < 0)
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if((udp->fd = socket(domain, SOCK_DGRAM, 0)) < 0)
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return -_udp_error("socket", 1);
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/* set the socket as non-blocking */
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if((flags = fcntl(udp->fd, F_GETFL)) == -1)
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@ -232,6 +257,8 @@ static void _udp_destroy(UDP * udp)
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if(udp->fd >= 0)
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close(udp->fd);
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free(udp->messages);
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if(udp->ai != NULL)
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freeaddrinfo(udp->ai);
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object_delete(udp);
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}
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@ -239,8 +266,25 @@ static void _udp_destroy(UDP * udp)
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/* udp_send */
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static int _udp_send(UDP * udp, AppMessage * message, int acknowledge)
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{
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#ifdef DEBUG
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struct sockaddr_in * sa;
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#endif
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#ifdef DEBUG
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if(udp->aip->ai_family == PF_INET)
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{
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sa = (struct sockaddr_in *)udp->aip->ai_addr;
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fprintf(stderr, "DEBUG: %s() %s (%s:%u)\n", __func__,
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"sendto()", inet_ntoa(sa->sin_addr),
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ntohs(sa->sin_port));
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}
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else
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fprintf(stderr, "DEBUG: %s() %s %d\n", __func__,
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"sendto()", udp->aip->ai_family);
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#endif
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/* FIXME really implement */
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return -1;
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return sendto(udp->fd, NULL, 0, 0, udp->aip->ai_addr,
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udp->aip->ai_addrlen);
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}
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@ -259,6 +303,7 @@ static int _udp_callback_read(int fd, UDP * udp)
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{
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char buf[65536];
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ssize_t ssize;
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/* FIXME may not be the right type of struct sockaddr */
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struct sockaddr_in sa;
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socklen_t sa_len;
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@ -65,8 +65,10 @@ _transport tcp ::1.4242 >> "$target" || FAILED="$FAILED tcp(error $?)"
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_transport tcp ::1:4242 >> "$target" || FAILED="$FAILED tcp(error $?)"
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_transport udp4 127.0.0.1:4242 >> "$target" || FAILED="$FAILED udp4(error $?)"
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_transport udp6 ::1.4242 >> "$target" || FAILED="$FAILED udp6(error $?)"
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_transport udp6 ::1:4242 >> "$target" || FAILED="$FAILED udp6(error $?)"
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_transport udp 127.0.0.1:4242 >> "$target" || FAILED="$FAILED udp(error $?)"
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_transport udp ::1.4242 >> "$target" || FAILED="$FAILED udp(error $?)"
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_transport udp ::1:4242 >> "$target" || FAILED="$FAILED udp(error $?)"
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[ -z "$FAILED" ] && exit 0
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echo "Failed tests:$FAILED" 1>&2
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#XXX ignore errors for now
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