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-rw-r--r--libs/enet/host.c480
1 files changed, 0 insertions, 480 deletions
diff --git a/libs/enet/host.c b/libs/enet/host.c
deleted file mode 100644
index c44f2ed3..00000000
--- a/libs/enet/host.c
+++ /dev/null
@@ -1,480 +0,0 @@
-/**
- @file host.c
- @brief ENet host management functions
-*/
-#define ENET_BUILDING_LIB 1
-#include <string.h>
-#include <time.h>
-#include "enet/enet.h"
-
-/** @defgroup host ENet host functions
- @{
-*/
-
-/** Creates a host for communicating to peers.
-
- @param address the address at which other peers may connect to this host. If NULL, then no peers may connect to the host.
- @param peerCount the maximum number of peers that should be allocated for the host.
- @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT
- @param incomingBandwidth downstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth.
- @param outgoingBandwidth upstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth.
-
- @returns the host on success and NULL on failure
-
- @remarks ENet will strategically drop packets on specific sides of a connection between hosts
- to ensure the host's bandwidth is not overwhelmed. The bandwidth parameters also determine
- the window size of a connection which limits the amount of reliable packets that may be in transit
- at any given time.
-*/
-ENetHost *
-enet_host_create (const ENetAddress * address, size_t peerCount, size_t channelLimit, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth)
-{
- ENetHost * host;
- ENetPeer * currentPeer;
-
- if (peerCount > ENET_PROTOCOL_MAXIMUM_PEER_ID)
- return NULL;
-
- host = (ENetHost *) enet_malloc (sizeof (ENetHost));
- if (host == NULL)
- return NULL;
-
- host -> peers = (ENetPeer *) enet_malloc (peerCount * sizeof (ENetPeer));
- if (host -> peers == NULL)
- {
- enet_free (host);
-
- return NULL;
- }
- memset (host -> peers, 0, peerCount * sizeof (ENetPeer));
-
- host -> socket = enet_socket_create (ENET_SOCKET_TYPE_DATAGRAM);
- if (host -> socket == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind (host -> socket, address) < 0))
- {
- if (host -> socket != ENET_SOCKET_NULL)
- enet_socket_destroy (host -> socket);
-
- enet_free (host -> peers);
- enet_free (host);
-
- return NULL;
- }
-
- enet_socket_set_option (host -> socket, ENET_SOCKOPT_NONBLOCK, 1);
- enet_socket_set_option (host -> socket, ENET_SOCKOPT_BROADCAST, 1);
- enet_socket_set_option (host -> socket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE);
- enet_socket_set_option (host -> socket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE);
-
- if (address != NULL)
- host -> address = * address;
-
- if (! channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT)
- channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT;
- else
- if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT)
- channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT;
-
- host -> randomSeed = (enet_uint32) time(NULL) + (enet_uint32) (size_t) host;
- host -> randomSeed = (host -> randomSeed << 16) | (host -> randomSeed >> 16);
- host -> channelLimit = channelLimit;
- host -> incomingBandwidth = incomingBandwidth;
- host -> outgoingBandwidth = outgoingBandwidth;
- host -> bandwidthThrottleEpoch = 0;
- host -> recalculateBandwidthLimits = 0;
- host -> mtu = ENET_HOST_DEFAULT_MTU;
- host -> peerCount = peerCount;
- host -> commandCount = 0;
- host -> bufferCount = 0;
- host -> checksum = NULL;
- host -> receivedAddress.host = ENET_HOST_ANY;
- host -> receivedAddress.port = 0;
- host -> receivedData = NULL;
- host -> receivedDataLength = 0;
-
- host -> totalSentData = 0;
- host -> totalSentPackets = 0;
- host -> totalReceivedData = 0;
- host -> totalReceivedPackets = 0;
-
- host -> compressor.context = NULL;
- host -> compressor.compress = NULL;
- host -> compressor.decompress = NULL;
- host -> compressor.destroy = NULL;
-
- enet_list_clear (& host -> dispatchQueue);
-
- for (currentPeer = host -> peers;
- currentPeer < & host -> peers [host -> peerCount];
- ++ currentPeer)
- {
- currentPeer -> host = host;
- currentPeer -> incomingPeerID = currentPeer - host -> peers;
- currentPeer -> outgoingSessionID = currentPeer -> incomingSessionID = 0xFF;
- currentPeer -> data = NULL;
-
- enet_list_clear (& currentPeer -> acknowledgements);
- enet_list_clear (& currentPeer -> sentReliableCommands);
- enet_list_clear (& currentPeer -> sentUnreliableCommands);
- enet_list_clear (& currentPeer -> outgoingReliableCommands);
- enet_list_clear (& currentPeer -> outgoingUnreliableCommands);
- enet_list_clear (& currentPeer -> dispatchedCommands);
-
- enet_peer_reset (currentPeer);
- }
-
- return host;
-}
-
-/** Destroys the host and all resources associated with it.
- @param host pointer to the host to destroy
-*/
-void
-enet_host_destroy (ENetHost * host)
-{
- ENetPeer * currentPeer;
-
- enet_socket_destroy (host -> socket);
-
- for (currentPeer = host -> peers;
- currentPeer < & host -> peers [host -> peerCount];
- ++ currentPeer)
- {
- enet_peer_reset (currentPeer);
- }
-
- if (host -> compressor.context != NULL && host -> compressor.destroy)
- (* host -> compressor.destroy) (host -> compressor.context);
-
- enet_free (host -> peers);
- enet_free (host);
-}
-
-/** Initiates a connection to a foreign host.
- @param host host seeking the connection
- @param address destination for the connection
- @param channelCount number of channels to allocate
- @param data user data supplied to the receiving host
- @returns a peer representing the foreign host on success, NULL on failure
- @remarks The peer returned will have not completed the connection until enet_host_service()
- notifies of an ENET_EVENT_TYPE_CONNECT event for the peer.
-*/
-ENetPeer *
-enet_host_connect (ENetHost * host, const ENetAddress * address, size_t channelCount, enet_uint32 data)
-{
- ENetPeer * currentPeer;
- ENetChannel * channel;
- ENetProtocol command;
-
- if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT)
- channelCount = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT;
- else
- if (channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT)
- channelCount = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT;
-
- for (currentPeer = host -> peers;
- currentPeer < & host -> peers [host -> peerCount];
- ++ currentPeer)
- {
- if (currentPeer -> state == ENET_PEER_STATE_DISCONNECTED)
- break;
- }
-
- if (currentPeer >= & host -> peers [host -> peerCount])
- return NULL;
-
- currentPeer -> channels = (ENetChannel *) enet_malloc (channelCount * sizeof (ENetChannel));
- if (currentPeer -> channels == NULL)
- return NULL;
- currentPeer -> channelCount = channelCount;
- currentPeer -> state = ENET_PEER_STATE_CONNECTING;
- currentPeer -> address = * address;
- currentPeer -> connectID = ++ host -> randomSeed;
-
- if (host -> outgoingBandwidth == 0)
- currentPeer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
- else
- currentPeer -> windowSize = (host -> outgoingBandwidth /
- ENET_PEER_WINDOW_SIZE_SCALE) *
- ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
-
- if (currentPeer -> windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE)
- currentPeer -> windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE;
- else
- if (currentPeer -> windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE)
- currentPeer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE;
-
- for (channel = currentPeer -> channels;
- channel < & currentPeer -> channels [channelCount];
- ++ channel)
- {
- channel -> outgoingReliableSequenceNumber = 0;
- channel -> outgoingUnreliableSequenceNumber = 0;
- channel -> incomingReliableSequenceNumber = 0;
- channel -> incomingUnreliableSequenceNumber = 0;
-
- enet_list_clear (& channel -> incomingReliableCommands);
- enet_list_clear (& channel -> incomingUnreliableCommands);
-
- channel -> usedReliableWindows = 0;
- memset (channel -> reliableWindows, 0, sizeof (channel -> reliableWindows));
- }
-
- command.header.command = ENET_PROTOCOL_COMMAND_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE;
- command.header.channelID = 0xFF;
- command.connect.outgoingPeerID = ENET_HOST_TO_NET_16 (currentPeer -> incomingPeerID);
- command.connect.incomingSessionID = currentPeer -> incomingSessionID;
- command.connect.outgoingSessionID = currentPeer -> outgoingSessionID;
- command.connect.mtu = ENET_HOST_TO_NET_32 (currentPeer -> mtu);
- command.connect.windowSize = ENET_HOST_TO_NET_32 (currentPeer -> windowSize);
- command.connect.channelCount = ENET_HOST_TO_NET_32 (channelCount);
- command.connect.incomingBandwidth = ENET_HOST_TO_NET_32 (host -> incomingBandwidth);
- command.connect.outgoingBandwidth = ENET_HOST_TO_NET_32 (host -> outgoingBandwidth);
- command.connect.packetThrottleInterval = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleInterval);
- command.connect.packetThrottleAcceleration = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleAcceleration);
- command.connect.packetThrottleDeceleration = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleDeceleration);
- command.connect.connectID = currentPeer -> connectID;
- command.connect.data = ENET_HOST_TO_NET_32 (data);
-
- enet_peer_queue_outgoing_command (currentPeer, & command, NULL, 0, 0);
-
- return currentPeer;
-}
-
-/** Queues a packet to be sent to all peers associated with the host.
- @param host host on which to broadcast the packet
- @param channelID channel on which to broadcast
- @param packet packet to broadcast
-*/
-void
-enet_host_broadcast (ENetHost * host, enet_uint8 channelID, ENetPacket * packet)
-{
- ENetPeer * currentPeer;
-
- for (currentPeer = host -> peers;
- currentPeer < & host -> peers [host -> peerCount];
- ++ currentPeer)
- {
- if (currentPeer -> state != ENET_PEER_STATE_CONNECTED)
- continue;
-
- enet_peer_send (currentPeer, channelID, packet);
- }
-
- if (packet -> referenceCount == 0)
- enet_packet_destroy (packet);
-}
-
-/** Sets the packet compressor the host should use to compress and decompress packets.
- @param host host to enable or disable compression for
- @param compressor callbacks for for the packet compressor; if NULL, then compression is disabled
-*/
-void
-enet_host_compress (ENetHost * host, const ENetCompressor * compressor)
-{
- if (host -> compressor.context != NULL && host -> compressor.destroy)
- (* host -> compressor.destroy) (host -> compressor.context);
-
- if (compressor)
- host -> compressor = * compressor;
- else
- host -> compressor.context = NULL;
-}
-
-/** Limits the maximum allowed channels of future incoming connections.
- @param host host to limit
- @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT
-*/
-void
-enet_host_channel_limit (ENetHost * host, size_t channelLimit)
-{
- if (! channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT)
- channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT;
- else
- if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT)
- channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT;
-
- host -> channelLimit = channelLimit;
-}
-
-
-/** Adjusts the bandwidth limits of a host.
- @param host host to adjust
- @param incomingBandwidth new incoming bandwidth
- @param outgoingBandwidth new outgoing bandwidth
- @remarks the incoming and outgoing bandwidth parameters are identical in function to those
- specified in enet_host_create().
-*/
-void
-enet_host_bandwidth_limit (ENetHost * host, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth)
-{
- host -> incomingBandwidth = incomingBandwidth;
- host -> outgoingBandwidth = outgoingBandwidth;
- host -> recalculateBandwidthLimits = 1;
-}
-
-void
-enet_host_bandwidth_throttle (ENetHost * host)
-{
- enet_uint32 timeCurrent = enet_time_get (),
- elapsedTime = timeCurrent - host -> bandwidthThrottleEpoch,
- peersTotal = 0,
- dataTotal = 0,
- peersRemaining,
- bandwidth,
- throttle = 0,
- bandwidthLimit = 0;
- int needsAdjustment;
- ENetPeer * peer;
- ENetProtocol command;
-
- if (elapsedTime < ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL)
- return;
-
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)
- continue;
-
- ++ peersTotal;
- dataTotal += peer -> outgoingDataTotal;
- }
-
- if (peersTotal == 0)
- return;
-
- peersRemaining = peersTotal;
- needsAdjustment = 1;
-
- if (host -> outgoingBandwidth == 0)
- bandwidth = ~0;
- else
- bandwidth = (host -> outgoingBandwidth * elapsedTime) / 1000;
-
- while (peersRemaining > 0 && needsAdjustment != 0)
- {
- needsAdjustment = 0;
-
- if (dataTotal < bandwidth)
- throttle = ENET_PEER_PACKET_THROTTLE_SCALE;
- else
- throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal;
-
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- enet_uint32 peerBandwidth;
-
- if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) ||
- peer -> incomingBandwidth == 0 ||
- peer -> outgoingBandwidthThrottleEpoch == timeCurrent)
- continue;
-
- peerBandwidth = (peer -> incomingBandwidth * elapsedTime) / 1000;
- if ((throttle * peer -> outgoingDataTotal) / ENET_PEER_PACKET_THROTTLE_SCALE <= peerBandwidth)
- continue;
-
- peer -> packetThrottleLimit = (peerBandwidth *
- ENET_PEER_PACKET_THROTTLE_SCALE) / peer -> outgoingDataTotal;
-
- if (peer -> packetThrottleLimit == 0)
- peer -> packetThrottleLimit = 1;
-
- if (peer -> packetThrottle > peer -> packetThrottleLimit)
- peer -> packetThrottle = peer -> packetThrottleLimit;
-
- peer -> outgoingBandwidthThrottleEpoch = timeCurrent;
-
-
- needsAdjustment = 1;
- -- peersRemaining;
- bandwidth -= peerBandwidth;
- dataTotal -= peerBandwidth;
- }
- }
-
- if (peersRemaining > 0)
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) ||
- peer -> outgoingBandwidthThrottleEpoch == timeCurrent)
- continue;
-
- peer -> packetThrottleLimit = throttle;
-
- if (peer -> packetThrottle > peer -> packetThrottleLimit)
- peer -> packetThrottle = peer -> packetThrottleLimit;
- }
-
- if (host -> recalculateBandwidthLimits)
- {
- host -> recalculateBandwidthLimits = 0;
-
- peersRemaining = peersTotal;
- bandwidth = host -> incomingBandwidth;
- needsAdjustment = 1;
-
- if (bandwidth == 0)
- bandwidthLimit = 0;
- else
- while (peersRemaining > 0 && needsAdjustment != 0)
- {
- needsAdjustment = 0;
- bandwidthLimit = bandwidth / peersRemaining;
-
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) ||
- peer -> incomingBandwidthThrottleEpoch == timeCurrent)
- continue;
-
- if (peer -> outgoingBandwidth > 0 &&
- peer -> outgoingBandwidth >= bandwidthLimit)
- continue;
-
- peer -> incomingBandwidthThrottleEpoch = timeCurrent;
-
- needsAdjustment = 1;
- -- peersRemaining;
- bandwidth -= peer -> outgoingBandwidth;
- }
- }
-
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)
- continue;
-
- command.header.command = ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE;
- command.header.channelID = 0xFF;
- command.bandwidthLimit.outgoingBandwidth = ENET_HOST_TO_NET_32 (host -> outgoingBandwidth);
-
- if (peer -> incomingBandwidthThrottleEpoch == timeCurrent)
- command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32 (peer -> outgoingBandwidth);
- else
- command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32 (bandwidthLimit);
-
- enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0);
- }
- }
-
- host -> bandwidthThrottleEpoch = timeCurrent;
-
- for (peer = host -> peers;
- peer < & host -> peers [host -> peerCount];
- ++ peer)
- {
- peer -> incomingDataTotal = 0;
- peer -> outgoingDataTotal = 0;
- }
-}
-
-/** @} */