int32_t OsNetworkReceiveFrom(THandle aHandle, uint8_t* aBuffer, uint32_t aBytes, TIpAddress* aAddress, uint16_t* aPort)
{
OsNetworkHandle* handle = (OsNetworkHandle*)aHandle;
if (SocketInterrupted(handle)) {
return -1;
}
struct sockaddr_in addr;
sockaddrFromEndpoint(&addr, 0, 0);
socklen_t addrLen = sizeof(addr);
SetFdNonBlocking(handle->iSocket);
fd_set read;
FD_ZERO(&read);
FD_SET(handle->iPipe[0], &read);
FD_SET(handle->iSocket, &read);
fd_set error;
FD_ZERO(&error);
FD_SET(handle->iSocket, &error);
int32_t received = TEMP_FAILURE_RETRY_2(recvfrom(handle->iSocket, aBuffer, aBytes, MSG_NOSIGNAL, (struct sockaddr*)&addr, &addrLen), handle);
if (received==-1 && errno==EWOULDBLOCK) {
int32_t selectErr = TEMP_FAILURE_RETRY_2(select(nfds(handle), &read, NULL, &error, NULL), handle);
if (selectErr > 0 && FD_ISSET(handle->iSocket, &read)) {
received = TEMP_FAILURE_RETRY_2(recvfrom(handle->iSocket, aBuffer, aBytes, MSG_NOSIGNAL, (struct sockaddr*)&addr, &addrLen), handle);
}
}
SetFdBlocking(handle->iSocket);
*aAddress = addr.sin_addr.s_addr;
*aPort = ntohs(addr.sin_port);
return received;
}
int32_t OsNetworkReceive(THandle aHandle, uint8_t* aBuffer, uint32_t aBytes)
{
OsNetworkHandle* handle = (OsNetworkHandle*)aHandle;
if (SocketInterrupted(handle)) {
return -1;
}
SetFdNonBlocking(handle->iSocket);
fd_set read;
FD_ZERO(&read);
FD_SET(handle->iPipe[0], &read);
FD_SET(handle->iSocket, &read);
fd_set error;
FD_ZERO(&error);
FD_SET(handle->iSocket, &error);
int32_t received = TEMP_FAILURE_RETRY_2(recv(handle->iSocket, aBuffer, aBytes, MSG_NOSIGNAL), handle);
if (received==-1 && errno==EWOULDBLOCK) {
int32_t selectErr = TEMP_FAILURE_RETRY_2(select(nfds(handle), &read, NULL, &error, NULL), handle);
if (selectErr > 0 && FD_ISSET(handle->iSocket, &read)) {
received = TEMP_FAILURE_RETRY_2(recv(handle->iSocket, aBuffer, aBytes, MSG_NOSIGNAL), handle);
}
}
SetFdBlocking(handle->iSocket);
return received;
}
THandle OsNetworkAccept(THandle aHandle, TIpAddress* aClientAddress, uint32_t* aClientPort)
{
OsNetworkHandle* handle = (OsNetworkHandle*)aHandle;
*aClientAddress = 0;
*aClientPort = 0;
if (SocketInterrupted(handle)) {
return kHandleNull;
}
struct sockaddr_in addr;
sockaddrFromEndpoint(&addr, 0, 0);
socklen_t len = sizeof(addr);
SetFdNonBlocking(handle->iSocket);
fd_set read;
FD_ZERO(&read);
FD_SET(handle->iPipe[0], &read);
FD_SET(handle->iSocket, &read);
fd_set error;
FD_ZERO(&error);
FD_SET(handle->iSocket, &error);
int32_t h = TEMP_FAILURE_RETRY_2(accept(handle->iSocket, (struct sockaddr*)&addr, &len), handle);
if (h==-1 && errno==EWOULDBLOCK) {
int32_t selectErr = TEMP_FAILURE_RETRY_2(select(nfds(handle), &read, NULL, &error, NULL), handle);
if (selectErr > 0 && FD_ISSET(handle->iSocket, &read)) {
h = TEMP_FAILURE_RETRY_2(accept(handle->iSocket, (struct sockaddr*)&addr, &len), handle);
}
}
SetFdBlocking(handle->iSocket);
if (h == -1) {
return kHandleNull;
}
OsNetworkHandle* newHandle = CreateHandle(handle->iCtx, h);
if (newHandle == NULL) {
close(h);
return kHandleNull;
}
*aClientAddress = addr.sin_addr.s_addr;
*aClientPort = ntohs(addr.sin_port);
return (THandle)newHandle;
}
static OsNetworkHandle* CreateHandle(int32_t aSocket)
{
OsNetworkHandle* handle = (OsNetworkHandle*)malloc(sizeof(OsNetworkHandle));
#ifdef PLATFORM_MACOSX_GNU
int set = 1;
setsockopt(aSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
#endif /* PLATFORM_MACOSX_GNU */
if (handle == NULL) {
return kHandleNull;
}
if (pipe(handle->iPipe) == -1) {
free(handle);
return kHandleNull;
}
SetFdNonBlocking(handle->iPipe[0]);
handle->iSocket = aSocket;
assert(aSocket >= 0 && aSocket < MAX_FILE_DESCRIPTOR);
handle->iInterrupted = 0;
return handle;
}
int32_t OsNetworkConnect(THandle aHandle, TIpAddress aAddress, uint16_t aPort, uint32_t aTimeoutMs)
{
OsNetworkHandle* handle = (OsNetworkHandle*)aHandle;
if (SocketInterrupted(handle)) {
return -1;
}
int32_t err = -1;
SetFdNonBlocking(handle->iSocket);
struct sockaddr_in addr;
sockaddrFromEndpoint(&addr, aAddress, aPort);
/* ignore err as we expect this to fail due to EINPROGRESS */
(void)connect(handle->iSocket, (struct sockaddr*)&addr, sizeof(addr));
fd_set read;
FD_ZERO(&read);
FD_SET(handle->iPipe[0], &read);
fd_set write;
FD_ZERO(&write);
FD_SET(handle->iSocket, &write);
fd_set error;
FD_ZERO(&error);
FD_SET(handle->iSocket, &error);
struct timeval tv;
tv.tv_sec = aTimeoutMs / 1000;
tv.tv_usec = (aTimeoutMs % 1000) * 1000;
int32_t selectErr = TEMP_FAILURE_RETRY_2(select(nfds(handle), &read, &write, &error, &tv), handle);
if (selectErr > 0 && FD_ISSET(handle->iSocket, &write)) {
err = 0;
}
SetFdBlocking(handle->iSocket);
return err;
}
