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/***************************************************************************
 *  Copyright (C) December 6, 2008 by Mattias Runge               *
 *  mattias@runge.se                           *
 *  asyncsocket.cpp                      *
 *                                     *
 *  This program is free software; you can redistribute it and/or modify *
 *  it under the terms of the GNU General Public License as published by *
 *  the Free Software Foundation; either version 2 of the License, or   *
 *  (at your option) any later version.                  *
 *                                     *
 *  This program is distributed in the hope that it will be useful,    *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of    *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the     *
 *  GNU General Public License for more details.             *
 *                                     *
 *  You should have received a copy of the GNU General Public License   *
 *  along with this program; if not, write to the             *
 *  Free Software Foundation, Inc.,                    *
 *  59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.       *
 ***************************************************************************/
 
#include "socketeventcallback.h"
 
 
#include "asyncsocket.h"
 
int socketCount = 1;
 
AsyncSocket::AsyncSocket()
{
    myId = socketCount++;
    mySocket = -1;
    myReconnectTimeout = 0;
    myForceReconnect = false;
    myEventCallback = NULL;
}
 
AsyncSocket::~AsyncSocket()
{
    stop();
    silentClose();
}
 
void AsyncSocket::run()
{
    // If connection is already up then we should not connect again
    if (!isConnected())
    {
        // If we have choosen to not use automatic reconnect do not start reconnect loop
        if (myReconnectTimeout == 0)
        {
            // Connect to somewhere
            connect();
        }
        else
        {
            // Start the reconnect loop
            reconnectLoop();
        }
    }
 
    bool loop = true;
    try
    {
        while (loop)
        {
            // If we have triggered a forced reconnect do it here
            if (myForceReconnect)
            {
                myForceReconnect = false;
                reconnectLoop();
            }
 
            // Receive data
            loop = receiveData();
        }
    }
    catch (SocketException *e)
    {
        // Something bad happend and we can not continue
        eventAdd(SocketEvent::TYPE_CONNECTION_DIED, e->getDescription());
    }
 
    // Clean up socket if we would want to restart
    silentClose();
}
 
bool AsyncSocket::receiveData()
{
    char buffer[MAXBUFFER + 1];
    memset(buffer, 0, MAXBUFFER + 1);
 
    int status = ::recv(mySocket, buffer, MAXBUFFER, 0);
 
    if (status == -1)
    {
        switch (errno)
        {
            case EAGAIN:
            throw new SocketException("The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.");
 
            case EBADF:
            throw new SocketException("The argument s is an invalid descriptor.");
 
            case ECONNREFUSED:
            throw new SocketException("A remote host refused to allow the network connection (typically because it is not running the requested service).");
 
            case EFAULT:
            throw new SocketException("The receive buffer pointer(s) point outside the process's address space.");
 
            case EINTR:
            throw new SocketException("The receive was interrupted by delivery of a signal before any data were available; see signal(7).");
 
            case EINVAL:
            throw new SocketException("Invalid argument passed.");
 
            case ENOMEM:
            throw new SocketException("Could not allocate memory for recvmsg().");
 
            case ENOTCONN:
            throw new SocketException("The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).");
 
            case ENOTSOCK:
            throw new SocketException("The argument s does not refer to a socket.");
 
            case ECONNRESET:
            eventAdd(SocketEvent::TYPE_CONNECTION_RESET);
 
            // If we have automatic reconnect we want to start it now
            if (myReconnectTimeout == 0)
            {
                reconnectLoop();
            }
            else
            {
                // Otherwise we would like to end the main loop
                return false;
            }
            break;
 
            default:
            throw new SocketException("Unknow exception: " + itos(errno));
            break;
        }
    }
    else if (status == 0)
    {
        // Remote host have done a normal shutdown
        eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);
 
        if (myReconnectTimeout > 0)
        {
            reconnectLoop();
        }
        else
        {
            return false;
        }
    }
    else if (status > 0)
    {
        // We have received data
        eventAdd(SocketEvent::TYPE_DATA, buffer);
    }
 
    return true;
}
 
void AsyncSocket::silentClose()
{
    if (mySocket != -1)
    {
        ::close(mySocket);
        mySocket = -1;
    }
}
 
void AsyncSocket::close()
{
    silentClose();
    eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);
}
 
void AsyncSocket::reconnectLoop()
{
    while (true)
    {
        try
        {
            connect();
            return;
        }
        catch (SocketException *e)
        {
            eventAdd(SocketEvent::TYPE_CONNECTION_FAILED, e->getDescription());
            eventAdd(SocketEvent::TYPE_WAITING_RECONNECT);
            sleep(myReconnectTimeout);
        }
    }
}
 
void AsyncSocket::create()
{
    silentClose();
 
    mySocket = ::socket(AF_INET, SOCK_STREAM, 0);
 
    int on = 1;
    int status = setsockopt(mySocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
    if (status == -1)
    {
        silentClose();
        throw new SocketException("Create:Reuseaddress: " + itos(errno));
    }
}
 
void AsyncSocket::startListen()
{
    create();
 
    myAddressStruct.sin_family = AF_INET;
    myAddressStruct.sin_addr.s_addr = INADDR_ANY;
    myAddressStruct.sin_port = htons(myPort);
 
    int status = ::bind(mySocket, (struct sockaddr *)&myAddressStruct, sizeof(myAddressStruct));
 
    if (status == -1)
    {
        silentClose();
        switch (errno)
        {
            case EACCES:
            throw new SocketException("The address is protected, and the user is not the superuser.");
 
            case EADDRINUSE:
            throw new SocketException("The given address is already in use.");
 
            case EBADF:
            throw new SocketException("sockfd is not a valid descriptor.");
 
            case EINVAL:
            throw new SocketException("The socket is already bound to an address.");
 
            case ENOTSOCK:
            throw new SocketException("sockfd is a descriptor for a file, not a socket.");
 
            //case EACCES:
            //throw new SocketException("Search permission is denied on a component of the path prefix. (See also path_resolution(7).)");
 
            case EADDRNOTAVAIL:
            throw new SocketException("A nonexistent interface was requested or the requested address was not local.");
 
            case EFAULT:
            throw new SocketException("addr points outside the user's accessible address space.");
 
            //case EINVAL:
            //throw new SocketException("The addrlen is wrong, or the socket was not in the AF_UNIX family.");
 
            case ELOOP:
            throw new SocketException("Too many symbolic links were encountered in resolving addr.");
 
            case ENAMETOOLONG:
            throw new SocketException("addr is too long.");
 
            case ENOENT:
            throw new SocketException("The file does not exist.");
 
            case ENOMEM:
            throw new SocketException("Insufficient kernel memory was available.");
 
            case ENOTDIR:
            throw new SocketException("A component of the path prefix is not a directory.");
 
            case EROFS:
            throw new SocketException("The socket inode would reside on a read-only file system.");
 
            default:
            throw new SocketException("Unknow exception: " + itos(errno));
            break;
        }
    }
 
    status = ::listen(mySocket, MAXCONNECTIONS);
 
    if (status == -1)
    {
        silentClose();
        switch (errno)
        {
            case EADDRINUSE:
            throw new SocketException("Another socket is already listening on the same port.");
 
            case EBADF:
            throw new SocketException("The argument sockfd is not a valid descriptor.");
 
            case ENOTSOCK:
            throw new SocketException("The argument sockfd is not a socket.");
 
            case EOPNOTSUPP:
            throw new SocketException("The socket is not of a type that supports the listen() operation.");
 
            default:
            throw new SocketException("Unknow exception: " + itos(errno));
            break;
        }
    }
}
 
bool AsyncSocket::accept(AsyncSocket* newSocket)
{
    int addr_length = sizeof(myAddressStruct);
    int socket = ::accept(mySocket, (sockaddr*)&myAddressStruct, (socklen_t*)&addr_length);
 
    if (socket > 0)
    {
        newSocket->setSocket(socket);
        return true;
    }
 
    return false;
}
 
void AsyncSocket::connect()
{
    eventAdd(SocketEvent::TYPE_CONNECTING);
 
    create();
 
    memset(&myAddressStruct, 0, sizeof(myAddressStruct));
 
    myAddressStruct.sin_family = AF_INET;
    myAddressStruct.sin_port = htons(myPort);
 
    struct hostent *hptr = gethostbyname(myAddress.c_str());
    if (hptr == NULL)
    {
        silentClose();
        throw new SocketException("Connect: Could not resolv ip address");
    }
 
    memcpy(&myAddressStruct.sin_addr, hptr->h_addr, hptr->h_length);
 
    int status = ::connect(mySocket, (sockaddr*)&myAddressStruct, sizeof(myAddressStruct));
 
    if (status == -1)
    {
        silentClose();
        switch (errno)
        {
            case EACCES:
            throw new SocketException("For Unix domain sockets, which are identified by pathname: Write permission is denied on the socket file, or search per- mission is denied for one of the directories in the path prefix. (See also path_resolution(7).)");
 
            case EPERM:
            throw new SocketException("The user tried to connect to a broadcast address without having the socket broadcast flag enabled or the connection request failed because of a local firewall rule.");
 
            case EADDRINUSE:
            throw new SocketException("Local address is already in use.");
 
            case EAFNOSUPPORT:
            throw new SocketException("The passed address didn't have the correct address family in its sa_family field.");
 
            case EAGAIN:
            throw new SocketException("No more free local ports or insufficient entries in the routing cache. For AF_INET see the net.ipv4.ip_local_port_range sysctl in ip(7) on how to increase the number of local ports.");
 
            case EALREADY:
            throw new SocketException("The socket is non-blocking and a previous connection attempt has not yet been completed.");
 
            case EBADF:
            throw new SocketException("The file descriptor is not a valid index in the descriptor table.");
 
            case ECONNREFUSED:
            throw new SocketException("No-one listening on the remote address.");
 
            case EFAULT:
            throw new SocketException("The socket structure address is outside the user's address space.");
 
            case EINPROGRESS:
            throw new SocketException("The socket is non-blocking and the connection cannot be completed immediately. It is possible to select(2) or poll(2) for completion by selecting the socket for writing. After select(2) indicates writability, use getsockopt(2) to read the SO_ERROR option at level SOL_SOCKET to determine whether connect() completed successfully (SO_ERROR is zero) or unsuccessfully (SO_ERROR is one of the usual error codes listed here, explaining the reason for the failure).");
 
            case EINTR:
            throw new SocketException("The system call was interrupted by a signal that was caught; see signal(7).");
 
            case EISCONN:
            throw new SocketException("The socket is already connected.");
 
            case ENETUNREACH:
            throw new SocketException("Network is unreachable.");
 
            case ENOTSOCK:
            throw new SocketException("The file descriptor is not associated with a socket.");
 
            case ETIMEDOUT:
            throw new SocketException("Timeout while attempting connection. The server may be too busy to accept new connections. Note that for IP sockets the timeout may be very long when syncookies are enabled on the server.");
 
            default:
            throw new SocketException("Other errors may be generated by the underlying protocol modules. : " + itos(errno));
        }
    }
 
    eventAdd(SocketEvent::TYPE_CONNECTED);
}
 
void AsyncSocket::sendData(string data)
{
    int status = ::send(mySocket, data.c_str(), data.size(), 0);
 
    if (status == -1)
    {
        switch (errno)
        {
            case EACCES:
            throw new SocketException("(For Unix domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix. (See path_resolution(7).)");
 
            case EAGAIN:
            throw new SocketException("The socket is marked non-blocking and the requested operation would block.");
 
            case EBADF:
            throw new SocketException("An invalid descriptor was specified.");
 
            case ECONNRESET:
            throw new SocketException("Connection reset by peer.");
 
            case EDESTADDRREQ:
            throw new SocketException("The socket is not connection-mode, and no peer address is set.");
 
            case EFAULT:
            throw new SocketException("An invalid user space address was specified for an argument.");
 
            case EINTR:
            throw new SocketException("A signal occurred before any data was transmitted; see signal(7).");
 
            case EINVAL:
            throw new SocketException("1Invalid argument passed.");
 
            case EISCONN:
            throw new SocketException("The connection-mode socket was connected already but a recipient was specified. (Now either this error is returned, or the recipient specification is ignored.)");
 
            case EMSGSIZE:
            throw new SocketException("The socket type requires that message be sent atomically, and the size of the message to be sent made this impossible.");
 
            case ENOBUFS:
            throw new SocketException("The output queue for a network interface was full. This generally indicates that the interface has stopped sending, but may be caused by transient congestion. (Normally, this does not occur in Linux. Packets are just silently dropped when a device queue overflows.)");
 
            case ENOMEM:
            throw new SocketException("No memory available.");
 
            case ENOTCONN:
            throw new SocketException("The socket is not connected, and no target has been given.");
 
            case ENOTSOCK:
            throw new SocketException("The argument s is not a socket.");
 
            case EOPNOTSUPP:
            throw new SocketException("Some bit in the flags argument is inappropriate for the socket type.");
 
            case EPIPE:
            throw new SocketException("The local end has been shut down on a connection oriented socket. In this case the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.");
 
            default:
            throw new SocketException("Unknow exception: " + itos(errno));
        }
    }
}
 
void AsyncSocket::eventAdd(unsigned int eventType)
{
    eventAdd(eventType, "");
}
 
void AsyncSocket::eventAdd(unsigned int eventType, string eventData)
{
    SocketEvent socketEvent(eventType, eventData);
 
    if (myEventCallback == NULL)
    {
        myEventQueue.push(socketEvent);
        myEventSemaphore.broadcast();
    }
    else
    {
        myEventCallback->handleEvent(myId, socketEvent);
    }
}
 
void AsyncSocket::eventSetCallback(SocketEventCallback* eventCallback)
{
    myEventCallback = eventCallback;
}
 

Rev 999	Rev 1026
1	/***************************************************************************	1	/***************************************************************************
2	* Copyright (C) December 6, 2008 by Mattias Runge *	2	* Copyright (C) December 6, 2008 by Mattias Runge *
3	* mattias@runge.se *	3	* mattias@runge.se *
4	* asyncsocket.cpp *	4	* asyncsocket.cpp *
5	* *	5	* *
6	* This program is free software; you can redistribute it and/or modify *	6	* This program is free software; you can redistribute it and/or modify *
7	* it under the terms of the GNU General Public License as published by *	7	* it under the terms of the GNU General Public License as published by *
8	* the Free Software Foundation; either version 2 of the License, or *	8	* the Free Software Foundation; either version 2 of the License, or *
9	* (at your option) any later version. *	9	* (at your option) any later version. *
10	* *	10	* *
11	* This program is distributed in the hope that it will be useful, *	11	* This program is distributed in the hope that it will be useful, *
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of *	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14	* GNU General Public License for more details. *	14	* GNU General Public License for more details. *
15	* *	15	* *
16	* You should have received a copy of the GNU General Public License *	16	* You should have received a copy of the GNU General Public License *
17	* along with this program; if not, write to the *	17	* along with this program; if not, write to the *
18	* Free Software Foundation, Inc., *	18	* Free Software Foundation, Inc., *
19	* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *	19	* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
20	***************************************************************************/	20	***************************************************************************/
21		21
22	#include "socketeventcallback.h"	22	#include "socketeventcallback.h"
23		23
24		24
25	#include "asyncsocket.h"	25	#include "asyncsocket.h"
26		26
27	int socketCount = 1;	27	int socketCount = 1;
28		28
29	AsyncSocket::AsyncSocket()	29	AsyncSocket::AsyncSocket()
30	{	30	{
31	myId = socketCount++;	31	myId = socketCount++;
32	mySocket = -1;	32	mySocket = -1;
33	myReconnectTimeout = 0;	33	myReconnectTimeout = 0;
34	myForceReconnect = false;	34	myForceReconnect = false;
35	myEventCallback = NULL;	35	myEventCallback = NULL;
36	}	36	}
37		37
38	AsyncSocket::~AsyncSocket()	38	AsyncSocket::~AsyncSocket()
39	{	39	{
40	stop();	40	stop();
41	silentClose();	41	silentClose();
42	}	42	}
43		43
44	void AsyncSocket::run()	44	void AsyncSocket::run()
45	{	45	{
46	// If connection is already up then we should not connect again	46	// If connection is already up then we should not connect again
47	if (!isConnected())	47	if (!isConnected())
48	{	48	{
49	// If we have choosen to not use automatic reconnect do not start reconnect loop	49	// If we have choosen to not use automatic reconnect do not start reconnect loop
50	if (myReconnectTimeout == 0)	50	if (myReconnectTimeout == 0)
51	{	51	{
52	// Connect to somewhere	52	// Connect to somewhere
53	connect();	53	connect();
54	}	54	}
55	else	55	else
56	{	56	{
57	// Start the reconnect loop	57	// Start the reconnect loop
58	reconnectLoop();	58	reconnectLoop();
59	}	59	}
60	}	60	}
61		61
62	bool loop = true;	62	bool loop = true;
63	try	63	try
64	{	64	{
65	while (loop)	65	while (loop)
66	{	66	{
67	// If we have triggered a forced reconnect do it here	67	// If we have triggered a forced reconnect do it here
68	if (myForceReconnect)	68	if (myForceReconnect)
69	{	69	{
70	myForceReconnect = false;	70	myForceReconnect = false;
71	reconnectLoop();	71	reconnectLoop();
72	}	72	}
73		73
74	// Receive data	74	// Receive data
75	loop = receiveData();	75	loop = receiveData();
76	}	76	}
77	}	77	}
78	catch (SocketException *e)	78	catch (SocketException *e)
79	{	79	{
80	// Something bad happend and we can not continue	80	// Something bad happend and we can not continue
81	eventAdd(SocketEvent::TYPE_CONNECTION_DIED, e->getDescription());	81	eventAdd(SocketEvent::TYPE_CONNECTION_DIED, e->getDescription());
82	}	82	}
83		83
84	// Clean up socket if we would want to restart	84	// Clean up socket if we would want to restart
85	silentClose();	85	silentClose();
86	}	86	}
87		87
88	bool AsyncSocket::receiveData()	88	bool AsyncSocket::receiveData()
89	{	89	{
90	char buffer[MAXBUFFER + 1];	90	char buffer[MAXBUFFER + 1];
91	memset(buffer, 0, MAXBUFFER + 1);	91	memset(buffer, 0, MAXBUFFER + 1);
92		92
93	int status = ::recv(mySocket, buffer, MAXBUFFER, 0);	93	int status = ::recv(mySocket, buffer, MAXBUFFER, 0);
94		94
95	if (status == -1)	95	if (status == -1)
96	{	96	{
97	switch (errno)	97	switch (errno)
98	{	98	{
99	case EAGAIN:	99	case EAGAIN:
100	throw new SocketException("The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.");	100	throw new SocketException("The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.");
101		101
102	case EBADF:	102	case EBADF:
103	throw new SocketException("The argument s is an invalid descriptor.");	103	throw new SocketException("The argument s is an invalid descriptor.");
104		104
105	case ECONNREFUSED:	105	case ECONNREFUSED:
106	throw new SocketException("A remote host refused to allow the network connection (typically because it is not running the requested service).");	106	throw new SocketException("A remote host refused to allow the network connection (typically because it is not running the requested service).");
107		107
108	case EFAULT:	108	case EFAULT:
109	throw new SocketException("The receive buffer pointer(s) point outside the process's address space.");	109	throw new SocketException("The receive buffer pointer(s) point outside the process's address space.");
110		110
111	case EINTR:	111	case EINTR:
112	throw new SocketException("The receive was interrupted by delivery of a signal before any data were available; see signal(7).");	112	throw new SocketException("The receive was interrupted by delivery of a signal before any data were available; see signal(7).");
113		113
114	case EINVAL:	114	case EINVAL:
115	throw new SocketException("Invalid argument passed.");	115	throw new SocketException("Invalid argument passed.");
116		116
117	case ENOMEM:	117	case ENOMEM:
118	throw new SocketException("Could not allocate memory for recvmsg().");	118	throw new SocketException("Could not allocate memory for recvmsg().");
119		119
120	case ENOTCONN:	120	case ENOTCONN:
121	throw new SocketException("The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).");	121	throw new SocketException("The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).");
122		122
123	case ENOTSOCK:	123	case ENOTSOCK:
124	throw new SocketException("The argument s does not refer to a socket.");	124	throw new SocketException("The argument s does not refer to a socket.");
125		125
126	case ECONNRESET:	126	case ECONNRESET:
127	eventAdd(SocketEvent::TYPE_CONNECTION_RESET);	127	eventAdd(SocketEvent::TYPE_CONNECTION_RESET);
128		128
129	// If we have automatic reconnect we want to start it now	129	// If we have automatic reconnect we want to start it now
130	if (myReconnectTimeout == 0)	130	if (myReconnectTimeout == 0)
131	{	131	{
132	reconnectLoop();	132	reconnectLoop();
133	}	133	}
134	else	134	else
135	{	135	{
136	// Otherwise we would like to end the main loop	136	// Otherwise we would like to end the main loop
137	return false;	137	return false;
138	}	138	}
139	break;	139	break;
140		140
141	default:	141	default:
142	throw new SocketException("Unknow exception: " + itos(errno));	142	throw new SocketException("Unknow exception: " + itos(errno));
143	break;	143	break;
144	}	144	}
145	}	145	}
146	else if (status == 0)	146	else if (status == 0)
147	{	147	{
148	// Remote host have done a normal shutdown	148	// Remote host have done a normal shutdown
149	eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);	149	eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);
150		150
151	if (myReconnectTimeout > 0)	151	if (myReconnectTimeout > 0)
152	{	152	{
153	reconnectLoop();	153	reconnectLoop();
154	}	154	}
155	else	155	else
156	{	156	{
157	return false;	157	return false;
158	}	158	}
159	}	159	}
160	else if (status > 0)	160	else if (status > 0)
161	{	161	{
162	// We have received data	162	// We have received data
163	eventAdd(SocketEvent::TYPE_DATA, buffer);	163	eventAdd(SocketEvent::TYPE_DATA, buffer);
164	}	164	}
165		165
166	return true;	166	return true;
167	}	167	}
168		168
169	void AsyncSocket::silentClose()	169	void AsyncSocket::silentClose()
170	{	170	{
171	if (mySocket != -1)	171	if (mySocket != -1)
172	{	172	{
173	::close(mySocket);	173	::close(mySocket);
174	mySocket = -1;	174	mySocket = -1;
175	}	175	}
176	}	176	}
177		177
178	void AsyncSocket::close()	178	void AsyncSocket::close()
179	{	179	{
180	silentClose();	180	silentClose();
181	eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);	181	eventAdd(SocketEvent::TYPE_CONNECTION_CLOSED);
182	}	182	}
183		183
184	void AsyncSocket::reconnectLoop()	184	void AsyncSocket::reconnectLoop()
185	{	185	{
186	while (true)	186	while (true)
187	{	187	{
188	try	188	try
189	{	189	{
190	connect();	190	connect();
191	return;	191	return;
192	}	192	}
193	catch (SocketException *e)	193	catch (SocketException *e)
194	{	194	{
195	eventAdd(SocketEvent::TYPE_CONNECTION_FAILED, e->getDescription());	195	eventAdd(SocketEvent::TYPE_CONNECTION_FAILED, e->getDescription());
196	eventAdd(SocketEvent::TYPE_WAITING_RECONNECT);	196	eventAdd(SocketEvent::TYPE_WAITING_RECONNECT);
197	sleep(myReconnectTimeout);	197	sleep(myReconnectTimeout);
198	}	198	}
199	}	199	}
200	}	200	}
201		201
202	void AsyncSocket::create()	202	void AsyncSocket::create()
203	{	203	{
204	silentClose();	204	silentClose();
205		205
206	mySocket = ::socket(AF_INET, SOCK_STREAM, 0);	206	mySocket = ::socket(AF_INET, SOCK_STREAM, 0);
207		207
208	int on = 1;	208	int on = 1;
209	int status = setsockopt(mySocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));	209	int status = setsockopt(mySocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
210	if (status == -1)	210	if (status == -1)
211	{	211	{
212	silentClose();	212	silentClose();
213	throw new SocketException("Create:Reuseaddress: " + itos(errno));	213	throw new SocketException("Create:Reuseaddress: " + itos(errno));
214	}	214	}
215	}	215	}
216		216
217	void AsyncSocket::startListen()	217	void AsyncSocket::startListen()
218	{	218	{
219	create();	219	create();
220		220
221	myAddressStruct.sin_family = AF_INET;	221	myAddressStruct.sin_family = AF_INET;
222	myAddressStruct.sin_addr.s_addr = INADDR_ANY;	222	myAddressStruct.sin_addr.s_addr = INADDR_ANY;
223	myAddressStruct.sin_port = htons(myPort);	223	myAddressStruct.sin_port = htons(myPort);
224		224
225	int status = ::bind(mySocket, (struct sockaddr *)&myAddressStruct, sizeof(myAddressStruct));	225	int status = ::bind(mySocket, (struct sockaddr *)&myAddressStruct, sizeof(myAddressStruct));
226		226
227	if (status == -1)	227	if (status == -1)
228	{	228	{
229	silentClose();	229	silentClose();
230	switch (errno)	230	switch (errno)
231	{	231	{
232	case EACCES:	232	case EACCES:
233	throw new SocketException("The address is protected, and the user is not the superuser.");	233	throw new SocketException("The address is protected, and the user is not the superuser.");
234		234
235	case EADDRINUSE:	235	case EADDRINUSE:
236	throw new SocketException("The given address is already in use.");	236	throw new SocketException("The given address is already in use.");
237		237
238	case EBADF:	238	case EBADF:
239	throw new SocketException("sockfd is not a valid descriptor.");	239	throw new SocketException("sockfd is not a valid descriptor.");
240		240
241	case EINVAL:	241	case EINVAL:
242	throw new SocketException("The socket is already bound to an address.");	242	throw new SocketException("The socket is already bound to an address.");
243		243
244	case ENOTSOCK:	244	case ENOTSOCK:
245	throw new SocketException("sockfd is a descriptor for a file, not a socket.");	245	throw new SocketException("sockfd is a descriptor for a file, not a socket.");
246		246
247	//case EACCES:	247	//case EACCES:
248	//throw new SocketException("Search permission is denied on a component of the path prefix. (See also path_resolution(7).)");	248	//throw new SocketException("Search permission is denied on a component of the path prefix. (See also path_resolution(7).)");
249		249
250	case EADDRNOTAVAIL:	250	case EADDRNOTAVAIL:
251	throw new SocketException("A nonexistent interface was requested or the requested address was not local.");	251	throw new SocketException("A nonexistent interface was requested or the requested address was not local.");
252		252
253	case EFAULT:	253	case EFAULT:
254	throw new SocketException("addr points outside the user's accessible address space.");	254	throw new SocketException("addr points outside the user's accessible address space.");
255		255
256	//case EINVAL:	256	//case EINVAL:
257	//throw new SocketException("The addrlen is wrong, or the socket was not in the AF_UNIX family.");	257	//throw new SocketException("The addrlen is wrong, or the socket was not in the AF_UNIX family.");
258		258
259	case ELOOP:	259	case ELOOP:
260	throw new SocketException("Too many symbolic links were encountered in resolving addr.");	260	throw new SocketException("Too many symbolic links were encountered in resolving addr.");
261		261
262	case ENAMETOOLONG:	262	case ENAMETOOLONG:
263	throw new SocketException("addr is too long.");	263	throw new SocketException("addr is too long.");
264		264
265	case ENOENT:	265	case ENOENT:
266	throw new SocketException("The file does not exist.");	266	throw new SocketException("The file does not exist.");
267		267
268	case ENOMEM:	268	case ENOMEM:
269	throw new SocketException("Insufficient kernel memory was available.");	269	throw new SocketException("Insufficient kernel memory was available.");
270		270
271	case ENOTDIR:	271	case ENOTDIR:
272	throw new SocketException("A component of the path prefix is not a directory.");	272	throw new SocketException("A component of the path prefix is not a directory.");
273		273
274	case EROFS:	274	case EROFS:
275	throw new SocketException("The socket inode would reside on a read-only file system.");	275	throw new SocketException("The socket inode would reside on a read-only file system.");
276		276
277	default:	277	default:
278	throw new SocketException("Unknow exception: " + itos(errno));	278	throw new SocketException("Unknow exception: " + itos(errno));
279	break;	279	break;
280	}	280	}
281	}	281	}
282		282
283	status = ::listen(mySocket, MAXCONNECTIONS);	283	status = ::listen(mySocket, MAXCONNECTIONS);
284		284
285	if (status == -1)	285	if (status == -1)
286	{	286	{
287	silentClose();	287	silentClose();
288	switch (errno)	288	switch (errno)
289	{	289	{
290	case EADDRINUSE:	290	case EADDRINUSE:
291	throw new SocketException("Another socket is already listening on the same port.");	291	throw new SocketException("Another socket is already listening on the same port.");
292		292
293	case EBADF:	293	case EBADF:
294	throw new SocketException("The argument sockfd is not a valid descriptor.");	294	throw new SocketException("The argument sockfd is not a valid descriptor.");
295		295
296	case ENOTSOCK:	296	case ENOTSOCK:
297	throw new SocketException("The argument sockfd is not a socket.");	297	throw new SocketException("The argument sockfd is not a socket.");
298		298
299	case EOPNOTSUPP:	299	case EOPNOTSUPP:
300	throw new SocketException("The socket is not of a type that supports the listen() operation.");	300	throw new SocketException("The socket is not of a type that supports the listen() operation.");
301		301
302	default:	302	default:
303	throw new SocketException("Unknow exception: " + itos(errno));	303	throw new SocketException("Unknow exception: " + itos(errno));
304	break;	304	break;
305	}	305	}
306	}	306	}
307	}	307	}
308		308
309	bool AsyncSocket::accept(AsyncSocket* newSocket)	309	bool AsyncSocket::accept(AsyncSocket* newSocket)
310	{	310	{
311	int addr_length = sizeof(myAddressStruct);	311	int addr_length = sizeof(myAddressStruct);
312	int socket = ::accept(mySocket, (sockaddr)&myAddressStruct, (socklen_t)&addr_length);	312	int socket = ::accept(mySocket, (sockaddr)&myAddressStruct, (socklen_t)&addr_length);
313		313
314	if (socket > 0)	314	if (socket > 0)
315	{	315	{
316	newSocket->setSocket(socket);	316	newSocket->setSocket(socket);
317	return true;	317	return true;
318	}	318	}
319		319
320	return false;	320	return false;
321	}	321	}
322		322
323	void AsyncSocket::connect()	323	void AsyncSocket::connect()
324	{	324	{
325	eventAdd(SocketEvent::TYPE_CONNECTING);	325	eventAdd(SocketEvent::TYPE_CONNECTING);
326		326
327	create();	327	create();
328		328
329	memset(&myAddressStruct, 0, sizeof(myAddressStruct));	329	memset(&myAddressStruct, 0, sizeof(myAddressStruct));
330		330
331	myAddressStruct.sin_family = AF_INET;	331	myAddressStruct.sin_family = AF_INET;
332	myAddressStruct.sin_port = htons(myPort);	332	myAddressStruct.sin_port = htons(myPort);
333		333
334	struct hostent *hptr = gethostbyname(myAddress.c_str());	334	struct hostent *hptr = gethostbyname(myAddress.c_str());
335	if (hptr == NULL)	335	if (hptr == NULL)
336	{	336	{
337	silentClose();	337	silentClose();
338	throw new SocketException("Connect: Could not resolv ip address");	338	throw new SocketException("Connect: Could not resolv ip address");
339	}	339	}
340		340
341	memcpy(&myAddressStruct.sin_addr, hptr->h_addr, hptr->h_length);	341	memcpy(&myAddressStruct.sin_addr, hptr->h_addr, hptr->h_length);
342		342
343	int status = ::connect(mySocket, (sockaddr*)&myAddressStruct, sizeof(myAddressStruct));	343	int status = ::connect(mySocket, (sockaddr*)&myAddressStruct, sizeof(myAddressStruct));
344		344
345	if (status == -1)	345	if (status == -1)
346	{	346	{
347	silentClose();	347	silentClose();
348	switch (errno)	348	switch (errno)
349	{	349	{
350	case EACCES:	350	case EACCES:
351	throw new SocketException("For Unix domain sockets, which are identified by pathname: Write permission is denied on the socket file, or search per- mission is denied for one of the directories in the path prefix. (See also path_resolution(7).)");	351	throw new SocketException("For Unix domain sockets, which are identified by pathname: Write permission is denied on the socket file, or search per- mission is denied for one of the directories in the path prefix. (See also path_resolution(7).)");
352		352
353	case EPERM:	353	case EPERM:
354	throw new SocketException("The user tried to connect to a broadcast address without having the socket broadcast flag enabled or the connection request failed because of a local firewall rule.");	354	throw new SocketException("The user tried to connect to a broadcast address without having the socket broadcast flag enabled or the connection request failed because of a local firewall rule.");
355		355
356	case EADDRINUSE:	356	case EADDRINUSE:
357	throw new SocketException("Local address is already in use.");	357	throw new SocketException("Local address is already in use.");
358		358
359	case EAFNOSUPPORT:	359	case EAFNOSUPPORT:
360	throw new SocketException("The passed address didn't have the correct address family in its sa_family field.");	360	throw new SocketException("The passed address didn't have the correct address family in its sa_family field.");
361		361
362	case EAGAIN:	362	case EAGAIN:
363	throw new SocketException("No more free local ports or insufficient entries in the routing cache. For AF_INET see the net.ipv4.ip_local_port_range sysctl in ip(7) on how to increase the number of local ports.");	363	throw new SocketException("No more free local ports or insufficient entries in the routing cache. For AF_INET see the net.ipv4.ip_local_port_range sysctl in ip(7) on how to increase the number of local ports.");
364		364
365	case EALREADY:	365	case EALREADY:
366	throw new SocketException("The socket is non-blocking and a previous connection attempt has not yet been completed.");	366	throw new SocketException("The socket is non-blocking and a previous connection attempt has not yet been completed.");
367		367
368	case EBADF:	368	case EBADF:
369	throw new SocketException("The file descriptor is not a valid index in the descriptor table.");	369	throw new SocketException("The file descriptor is not a valid index in the descriptor table.");
370		370
371	case ECONNREFUSED:	371	case ECONNREFUSED:
372	throw new SocketException("No-one listening on the remote address.");	372	throw new SocketException("No-one listening on the remote address.");
373		373
374	case EFAULT:	374	case EFAULT:
375	throw new SocketException("The socket structure address is outside the user's address space.");	375	throw new SocketException("The socket structure address is outside the user's address space.");
376		376
377	case EINPROGRESS:	377	case EINPROGRESS:
378	throw new SocketException("The socket is non-blocking and the connection cannot be completed immediately. It is possible to select(2) or poll(2) for completion by selecting the socket for writing. After select(2) indicates writability, use getsockopt(2) to read the SO_ERROR option at level SOL_SOCKET to determine whether connect() completed successfully (SO_ERROR is zero) or unsuccessfully (SO_ERROR is one of the usual error codes listed here, explaining the reason for the failure).");	378	throw new SocketException("The socket is non-blocking and the connection cannot be completed immediately. It is possible to select(2) or poll(2) for completion by selecting the socket for writing. After select(2) indicates writability, use getsockopt(2) to read the SO_ERROR option at level SOL_SOCKET to determine whether connect() completed successfully (SO_ERROR is zero) or unsuccessfully (SO_ERROR is one of the usual error codes listed here, explaining the reason for the failure).");
379		379
380	case EINTR:	380	case EINTR:
381	throw new SocketException("The system call was interrupted by a signal that was caught; see signal(7).");	381	throw new SocketException("The system call was interrupted by a signal that was caught; see signal(7).");
382		382
383	case EISCONN:	383	case EISCONN:
384	throw new SocketException("The socket is already connected.");	384	throw new SocketException("The socket is already connected.");
385		385
386	case ENETUNREACH:	386	case ENETUNREACH:
387	throw new SocketException("Network is unreachable.");	387	throw new SocketException("Network is unreachable.");
388		388
389	case ENOTSOCK:	389	case ENOTSOCK:
390	throw new SocketException("The file descriptor is not associated with a socket.");	390	throw new SocketException("The file descriptor is not associated with a socket.");
391		391
392	case ETIMEDOUT:	392	case ETIMEDOUT:
393	throw new SocketException("Timeout while attempting connection. The server may be too busy to accept new connections. Note that for IP sockets the timeout may be very long when syncookies are enabled on the server.");	393	throw new SocketException("Timeout while attempting connection. The server may be too busy to accept new connections. Note that for IP sockets the timeout may be very long when syncookies are enabled on the server.");
394		394
395	default:	395	default:
396	throw new SocketException("Other errors may be generated by the underlying protocol modules. : " + itos(errno));	396	throw new SocketException("Other errors may be generated by the underlying protocol modules. : " + itos(errno));
397	}	397	}
398	}	398	}
399		399
400	eventAdd(SocketEvent::TYPE_CONNECTED);	400	eventAdd(SocketEvent::TYPE_CONNECTED);
401	}	401	}
402		402
403	void AsyncSocket::sendData(string data)	403	void AsyncSocket::sendData(string data)
404	{	404	{
405	int status = ::send(mySocket, data.c_str(), data.size(), 0);	405	int status = ::send(mySocket, data.c_str(), data.size(), 0);
406		406
407	if (status == -1)	407	if (status == -1)
408	{	408	{
409	switch (errno)	409	switch (errno)
410	{	410	{
411	case EACCES:	411	case EACCES:
412	throw new SocketException("(For Unix domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix. (See path_resolution(7).)");	412	throw new SocketException("(For Unix domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix. (See path_resolution(7).)");
413		413
414	case EAGAIN:	414	case EAGAIN:
415	throw new SocketException("The socket is marked non-blocking and the requested operation would block.");	415	throw new SocketException("The socket is marked non-blocking and the requested operation would block.");
416		416
417	case EBADF:	417	case EBADF:
418	throw new SocketException("An invalid descriptor was specified.");	418	throw new SocketException("An invalid descriptor was specified.");
419		419
420	case ECONNRESET:	420	case ECONNRESET:
421	throw new SocketException("Connection reset by peer.");	421	throw new SocketException("Connection reset by peer.");
422		422
423	case EDESTADDRREQ:	423	case EDESTADDRREQ:
424	throw new SocketException("The socket is not connection-mode, and no peer address is set.");	424	throw new SocketException("The socket is not connection-mode, and no peer address is set.");
425		425
426	case EFAULT:	426	case EFAULT:
427	throw new SocketException("An invalid user space address was specified for an argument.");	427	throw new SocketException("An invalid user space address was specified for an argument.");
428		428
429	case EINTR:	429	case EINTR:
430	throw new SocketException("A signal occurred before any data was transmitted; see signal(7).");	430	throw new SocketException("A signal occurred before any data was transmitted; see signal(7).");
431		431
432	case EINVAL:	432	case EINVAL:
433	throw new SocketException("1Invalid argument passed.");	433	throw new SocketException("1Invalid argument passed.");
434		434
435	case EISCONN:	435	case EISCONN:
436	throw new SocketException("The connection-mode socket was connected already but a recipient was specified. (Now either this error is returned, or the recipient specification is ignored.)");	436	throw new SocketException("The connection-mode socket was connected already but a recipient was specified. (Now either this error is returned, or the recipient specification is ignored.)");
437		437
438	case EMSGSIZE:	438	case EMSGSIZE:
439	throw new SocketException("The socket type requires that message be sent atomically, and the size of the message to be sent made this impossible.");	439	throw new SocketException("The socket type requires that message be sent atomically, and the size of the message to be sent made this impossible.");
440		440
441	case ENOBUFS:	441	case ENOBUFS:
442	throw new SocketException("The output queue for a network interface was full. This generally indicates that the interface has stopped sending, but may be caused by transient congestion. (Normally, this does not occur in Linux. Packets are just silently dropped when a device queue overflows.)");	442	throw new SocketException("The output queue for a network interface was full. This generally indicates that the interface has stopped sending, but may be caused by transient congestion. (Normally, this does not occur in Linux. Packets are just silently dropped when a device queue overflows.)");
443		443
444	case ENOMEM:	444	case ENOMEM:
445	throw new SocketException("No memory available.");	445	throw new SocketException("No memory available.");
446		446
447	case ENOTCONN:	447	case ENOTCONN:
448	throw new SocketException("The socket is not connected, and no target has been given.");	448	throw new SocketException("The socket is not connected, and no target has been given.");
449		449
450	case ENOTSOCK:	450	case ENOTSOCK:
451	throw new SocketException("The argument s is not a socket.");	451	throw new SocketException("The argument s is not a socket.");
452		452
453	case EOPNOTSUPP:	453	case EOPNOTSUPP:
454	throw new SocketException("Some bit in the flags argument is inappropriate for the socket type.");	454	throw new SocketException("Some bit in the flags argument is inappropriate for the socket type.");
455		455
456	case EPIPE:	456	case EPIPE:
457	throw new SocketException("The local end has been shut down on a connection oriented socket. In this case the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.");	457	throw new SocketException("The local end has been shut down on a connection oriented socket. In this case the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.");
458		458
459	default:	459	default:
460	throw new SocketException("Unknow exception: " + itos(errno));	460	throw new SocketException("Unknow exception: " + itos(errno));
461	}	461	}
462	}	462	}
463	}	463	}
464		464
465	void AsyncSocket::eventAdd(unsigned int eventType)	465	void AsyncSocket::eventAdd(unsigned int eventType)
466	{	466	{
467	eventAdd(eventType, "");	467	eventAdd(eventType, "");
468	}	468	}
469		469
470	void AsyncSocket::eventAdd(unsigned int eventType, string eventData)	470	void AsyncSocket::eventAdd(unsigned int eventType, string eventData)
471	{	471	{
472	SocketEvent socketEvent(eventType, eventData);	472	SocketEvent socketEvent(eventType, eventData);
473		473
474	if (myEventCallback == NULL)	474	if (myEventCallback == NULL)
475	{	475	{
476	myEventQueue.push(socketEvent);	476	myEventQueue.push(socketEvent);
477	myEventSemaphore.broadcast();	477	myEventSemaphore.broadcast();
478	}	478	}
479	else	479	else
480	{	480	{
481	myEventCallback->handleEvent(myId, socketEvent);	481	myEventCallback->handleEvent(myId, socketEvent);
482	}	482	}
483	}	483	}
484		484
485	void AsyncSocket::eventSetCallback(SocketEventCallback* eventCallback)	485	void AsyncSocket::eventSetCallback(SocketEventCallback* eventCallback)
486	{	486	{
487	myEventCallback = eventCallback;	487	myEventCallback = eventCallback;
488	}	488	}
489		489

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(root)/trunk/PcSoftware/Atom/src/Socket/asyncsocket.cpp – Rev 999 → 1026