src/network/core/tcp.cpp
author rubidium
Fri, 12 Jan 2007 20:19:49 +0000
changeset 5624 6afe9d27430a
parent 5609 dc6a58930ba4
child 5864 a95a2849b0e1
permissions -rw-r--r--
(svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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/* $Id$ */
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#ifdef ENABLE_NETWORK
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#include "../../stdafx.h"
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#include "../../debug.h"
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#include "../../openttd.h"
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#include "../../variables.h"
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#include "table/strings.h"
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#include "../../functions.h"
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#include "../network_data.h"
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#include "packet.h"
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#include "tcp.h"
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#include "../../helpers.hpp"
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/**
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 * @file tcp.c Basic functions to receive and send TCP packets.
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 */
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/** Very ugly temporary hack !!! */
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void NetworkTCPSocketHandler::Initialize()
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{
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	this->sock              = INVALID_SOCKET;
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	this->index             = 0;
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	this->last_frame        = 0;
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	this->last_frame_server = 0;
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	this->lag_test          = 0;
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	this->status            = STATUS_INACTIVE;
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	this->has_quit          = false;
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	this->writable          = false;
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	this->packet_queue      = NULL;
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	this->packet_recv       = NULL;
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	this->command_queue     = NULL;
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}
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/**
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 * Functions to help NetworkRecv_Packet/NetworkSend_Packet a bit
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 *  A socket can make errors. When that happens this handles what to do.
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 * For clients: close connection and drop back to main-menu
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 * For servers: close connection and that is it
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 * @param cs the client to close the connection of
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 * @return the new status
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 * TODO: needs to be splitted when using client and server socket packets
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 */
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NetworkRecvStatus NetworkTCPSocketHandler::CloseConnection()
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{
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	NetworkCloseClient(this);
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	/* Clients drop back to the main menu */
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	if (!_network_server && _networking) {
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		_switch_mode = SM_MENU;
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		_networking = false;
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		_switch_mode_errorstr = STR_NETWORK_ERR_LOSTCONNECTION;
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		return NETWORK_RECV_STATUS_CONN_LOST;
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	}
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	return NETWORK_RECV_STATUS_OKAY;
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}
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/**
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 * This function puts the packet in the send-queue and it is send as
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 * soon as possible. This is the next tick, or maybe one tick later
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 * if the OS-network-buffer is full)
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 * @param packet the packet to send
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 * @param cs     the client to send to
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 */
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void NetworkSend_Packet(Packet *packet, NetworkTCPSocketHandler *cs)
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{
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	Packet *p;
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	assert(packet != NULL);
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	packet->pos = 0;
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	packet->next = NULL;
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	NetworkSend_FillPacketSize(packet);
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    82
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    83
	/* Locate last packet buffered for the client */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    84
	p = cs->packet_queue;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    85
	if (p == NULL) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    86
		/* No packets yet */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    87
		cs->packet_queue = packet;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    88
	} else {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    89
		/* Skip to the last packet */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    90
		while (p->next != NULL) p = p->next;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    91
		p->next = packet;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    92
	}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    93
}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    94
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    95
/**
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    96
 * Sends all the buffered packets out for this client. It stops when:
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    97
 *   1) all packets are send (queue is empty)
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    98
 *   2) the OS reports back that it can not send any more
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
    99
 *      data right now (full network-buffer, it happens ;))
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   100
 *   3) sending took too long
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   101
 * @param cs the client to send the packets for
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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   102
 */
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   103
bool NetworkSend_Packets(NetworkTCPSocketHandler *cs)
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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diff changeset
   104
{
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   105
	ssize_t res;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   106
	Packet *p;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   107
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   108
	/* We can not write to this socket!! */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   109
	if (!cs->writable) return false;
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   110
	if (!cs->IsConnected()) return false;
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   111
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   112
	p = cs->packet_queue;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   113
	while (p != NULL) {
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   114
		res = send(cs->sock, (const char*)p->buffer + p->pos, p->size - p->pos, 0);
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   115
		if (res == -1) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   116
			int err = GET_LAST_ERROR();
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   117
			if (err != EWOULDBLOCK) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   118
				/* Something went wrong.. close client! */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   119
				DEBUG(net, 0, "send failed with error %d", err);
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   120
				cs->CloseConnection();
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   121
				return false;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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diff changeset
   122
			}
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rubidium
parents:
diff changeset
   123
			return true;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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diff changeset
   124
		}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   125
		if (res == 0) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   126
			/* Client/server has left us :( */
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   127
			cs->CloseConnection();
5469
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rubidium
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diff changeset
   128
			return false;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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   129
		}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   130
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   131
		p->pos += res;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   132
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rubidium
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   133
		/* Is this packet sent? */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
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   134
		if (p->pos == p->size) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
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   135
			/* Go to the next packet */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   136
			cs->packet_queue = p->next;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   137
			free(p);
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   138
			p = cs->packet_queue;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   139
		} else {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
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   140
			return true;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   141
		}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   142
	}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   143
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   144
	return true;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   145
}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   146
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   147
/**
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   148
 * Receives a packet for the given client
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   149
 * @param cs     the client to (try to) receive a packet for
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   150
 * @param status the variable to store the status into
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   151
 * @return the received packet (or NULL when it didn't receive one)
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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parents:
diff changeset
   152
 */
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   153
Packet *NetworkRecv_Packet(NetworkTCPSocketHandler *cs, NetworkRecvStatus *status)
5469
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parents:
diff changeset
   154
{
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   155
	ssize_t res;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   156
	Packet *p;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   157
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   158
	*status = NETWORK_RECV_STATUS_OKAY;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   159
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6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
rubidium
parents: 5609
diff changeset
   160
	if (!cs->IsConnected()) return NULL;
5469
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rubidium
parents:
diff changeset
   161
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   162
	if (cs->packet_recv == NULL) {
5609
dc6a58930ba4 (svn r8066) - Codechange: MallocT(), CallocT(), ReallocT() now return the pointer to allocated memory instead of modifying the pointer given as parameter
KUDr
parents: 5587
diff changeset
   163
		cs->packet_recv = MallocT<Packet>(1);
5469
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rubidium
parents:
diff changeset
   164
		if (cs->packet_recv == NULL) error("Failed to allocate packet");
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
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   165
		/* Set pos to zero! */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   166
		cs->packet_recv->pos = 0;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   167
		cs->packet_recv->size = 0; // Can be ommited, just for safety reasons
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   168
	}
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rubidium
parents:
diff changeset
   169
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   170
	p = cs->packet_recv;
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parents:
diff changeset
   171
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
rubidium
parents:
diff changeset
   172
	/* Read packet size */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	if (p->pos < sizeof(PacketSize)) {
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		while (p->pos < sizeof(PacketSize)) {
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6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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		/* Read the size of the packet */
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			res = recv(cs->sock, (char*)p->buffer + p->pos, sizeof(PacketSize) - p->pos, 0);
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			if (res == -1) {
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				int err = GET_LAST_ERROR();
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				if (err != EWOULDBLOCK) {
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					/* Something went wrong... (104 is connection reset by peer) */
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					if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);
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					*status = cs->CloseConnection();
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					return NULL;
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				}
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				/* Connection would block, so stop for now */
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				return NULL;
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			}
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			if (res == 0) {
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				/* Client/server has left */
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				*status = cs->CloseConnection();
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				return NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			p->pos += res;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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		}
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		NetworkRecv_ReadPacketSize(p);
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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		if (p->size > SEND_MTU) {
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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			*status = cs->CloseConnection();
5469
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			return NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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		}
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	}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	/* Read rest of packet */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	while (p->pos < p->size) {
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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		res = recv(cs->sock, (char*)p->buffer + p->pos, p->size - p->pos, 0);
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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		if (res == -1) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			int err = GET_LAST_ERROR();
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			if (err != EWOULDBLOCK) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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				/* Something went wrong... (104 is connection reset by peer) */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   211
				if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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				*status = cs->CloseConnection();
5469
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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				return NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			/* Connection would block */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			return NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   217
		}
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   218
		if (res == 0) {
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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			/* Client/server has left */
5624
6afe9d27430a (svn r8083) -Codechange: make a NetworkSocketHandler as base for all sockets and move a little of NetworkClientState functionality to the NetworkSocketHandler. Move the rest of the NetworkClientState to the new NetworkTCPSocketHandler class/struct, which is not yet implemented in an object oriented manner. The UDP socket handler now extends the NetworkSocketHandler instead of having a reference to a NetworkClientState.
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			*status = cs->CloseConnection();
5469
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   221
			return NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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		}
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		p->pos += res;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   225
	}
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7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	/* We have a complete packet, return it! */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	p->pos = 2;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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	p->next = NULL; // Should not be needed, but who knows...
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   231
	/* Prepare for receiving a new packet */
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   232
	cs->packet_recv = NULL;
7edfc643abbc (svn r7751) -Codechange: move network_* to a new network map. Furthermore move the low level network functions to network/core, so they can be reused by the masterserver and website-serverlist-updater.
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   234
	return p;
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}
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   237
#endif /* ENABLE_NETWORK */