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Implement udp multicast methods on windows.

Test is failing.
uv_udp_set_membership is not supported for UDP/IPv6 sockets yet.
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piscisaureus committed Jan 27, 2012
1 parent f925275 commit 7bc6f3a9a661cbf9b3a2e81d6b078feda88cf1e9
Showing with 95 additions and 25 deletions.
  1. +95 −25 src/win/udp.c
@@ -244,15 +244,6 @@ int uv__udp_bind6(uv_udp_t* handle, struct sockaddr_in6 addr,
}


int uv_udp_set_membership(uv_udp_t* handle, const char* multicast_addr,
const char* interface_addr, uv_membership membership) {

/* not implemented yet */
uv__set_artificial_error(handle->loop, UV_ENOSYS);
return -1;
}


static void uv_udp_queue_recv(uv_loop_t* loop, uv_udp_t* handle) {
uv_req_t* req;
uv_buf_t buf;
@@ -579,35 +570,114 @@ void uv_process_udp_send_req(uv_loop_t* loop, uv_udp_t* handle,
}


int uv_udp_set_multicast_loop(uv_udp_t* handle, int on) {
uv__set_artificial_error(handle->loop, UV_ENOSYS);
return -1;
}
int uv_udp_set_membership(uv_udp_t* handle, const char* multicast_addr,
const char* interface_addr, uv_membership membership) {
int optname;
struct ip_mreq mreq;

/* If the socket is unbound, bind to inaddr_any. */
if (!(handle->flags & UV_HANDLE_BOUND) &&
uv_udp_bind(handle, uv_addr_ip4_any_, 0) < 0) {
return -1;
}

int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl) {
if (setsockopt(handle->socket, IPPROTO_IP, IP_MULTICAST_TTL,
(const char*)&ttl, sizeof ttl) == -1) {
uv__set_sys_error(handle->loop, WSAGetLastError());
if (handle->flags & UV_HANDLE_IPV6) {
uv__set_artificial_error(handle->loop, UV_ENOSYS);
return -1;
}

memset(&mreq, 0, sizeof mreq);

if (interface_addr) {
mreq.imr_interface.s_addr = inet_addr(interface_addr);
} else {
mreq.imr_interface.s_addr = htonl(INADDR_ANY);
}

mreq.imr_multiaddr.s_addr = inet_addr(multicast_addr);

switch (membership) {
case UV_JOIN_GROUP:
optname = IP_ADD_MEMBERSHIP;
break;
case UV_LEAVE_GROUP:
optname = IP_DROP_MEMBERSHIP;
break;
default:
uv__set_artificial_error(handle->loop, UV_EFAULT);
return -1;
}

if (setsockopt(handle->socket,
IPPROTO_IP,
optname,
(char*) &mreq,
sizeof mreq) == SOCKET_ERROR) {
uv__set_sys_error(handle->loop, WSAGetLastError());
return -1;
}

return 0;
}


int uv_udp_set_broadcast(uv_udp_t* handle, int on) {
if (setsockopt(handle->socket, SOL_SOCKET, SO_BROADCAST, (const char*)&on,
sizeof on) == -1) {
uv__set_sys_error(handle->loop, WSAGetLastError());
int uv_udp_set_broadcast(uv_udp_t* handle, int value) {
BOOL optval = (BOOL) value;

/* If the socket is unbound, bind to inaddr_any. */
if (!(handle->flags & UV_HANDLE_BOUND) &&
uv_udp_bind(handle, uv_addr_ip4_any_, 0) < 0) {
return -1;
}

if (setsockopt(handle->socket,
SOL_SOCKET,
SO_BROADCAST,
(char*) &optval,
sizeof optval)) {
uv__set_sys_error(handle->loop, WSAGetLastError());
return -1;
}
return 0;
}


int uv_udp_set_ttl(uv_udp_t* handle, int ttl) {
uv__set_artificial_error(handle->loop, UV_ENOSYS);
return -1;
}
#define SOCKOPT_SETTER(name, option4, option6) \
int uv_udp_set_##name(uv_udp_t* handle, int value) { \
DWORD optval = (DWORD) value; \
\
/* If the socket is unbound, bind to inaddr_any. */ \
if (!(handle->flags & UV_HANDLE_BOUND) && \
uv_udp_bind(handle, uv_addr_ip4_any_, 0) < 0) { \
return -1; \
} \
\
if (!(handle->flags & UV_HANDLE_IPV6)) { \
/* Set IPv4 socket option */ \
if (setsockopt(handle->socket, \
IPPROTO_IP, \
option4, \
(char*) &optval, \
sizeof optval)) { \
uv__set_sys_error(handle->loop, WSAGetLastError()); \
return -1; \
} \
} else { \
/* Set IPv6 socket option */ \
if (setsockopt(handle->socket, \
IPPROTO_IPV6, \
option6, \
(char*) &optval, \
sizeof optval)) { \
uv__set_sys_error(handle->loop, WSAGetLastError()); \
return -1; \
} \
} \
return 0; \
}

SOCKOPT_SETTER(multicast_loop, IP_MULTICAST_LOOP, IPV6_MULTICAST_LOOP)
SOCKOPT_SETTER(multicast_ttl, IP_MULTICAST_TTL, IPV6_MULTICAST_HOPS)
SOCKOPT_SETTER(ttl, IP_TTL, IPV6_HOPLIMIT)

#undef SOCKOPT_SETTER

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