arzmq-sys 0.6.3

Low-level bindings to the zeromq library
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
#include "opnetProtoSimProcess.h"
#include	"mgen.h"

    
extern "C"
{
#include    "oms_pr.h"
#include    "udp_api.h"
#include    "ip_addr_v4.h"
#include    "ip_rte_v4.h"
}

OpnetProtoSimProcess::OpnetProtoSimProcess() 
{
      
}

OpnetProtoSimProcess::~OpnetProtoSimProcess(void)
{
  
}

ProtoSimAgent::SocketProxy* OpnetProtoSimProcess::OpenSocket(ProtoSocket& theSocket)
{
#ifdef OP_DEBUG1
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::OpenSocket() with udp_id = %d\n",
	udp_process_id);
#endif
UdpSocketProxy* udpProxy;
TcpSocketProxy* tcpProxy;
if (theSocket.GetProtocol() == theSocket.TCP)
	{
		tcpProxy = new TcpSocketProxy(this);
		if (tcpProxy)
			{
        	tcpProxy->AttachSocket(theSocket);
			socket_proxy_list.Prepend(*tcpProxy);
			return tcpProxy;             
			}    
		else
			{
			fprintf(stderr, "OpnetProtoSimProcess::OpenSocket() new SocketAgent error\n");
			return NULL;
			}
	}
else
	{
		udpProxy = new UdpSocketProxy(this);  // JPH
		if (udpProxy)
		{
        	udpProxy->AttachSocket(theSocket);
			socket_proxy_list.Prepend(*udpProxy);
			return udpProxy;             
			}    
		else
			{
			fprintf(stderr, "OpnetProtoSimProcess::OpenSocket() new SocketAgent error\n");
			return NULL;   
		}
	}
}  // end OpnetProtoSimProcess::OpenSocket()

void OpnetProtoSimProcess::CloseSocket(ProtoSocket& theSocket)
{
#ifdef OP_DEBUG1
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::CloseSocket()\n");
#endif
    SocketProxy* socketProxy = static_cast<SocketProxy*>(theSocket.GetHandle());
    // (TBD) Do we to do any OPNET cleanup here???
	if (theSocket.GetProtocol() == theSocket.TCP)
	{
		ApiT_Tcp_App_Handle hndl = *(((TcpSocketProxy*)socketProxy)->sim_process->GetTcpAppHandle(((TcpSocketProxy*)socketProxy)->GetConn()));
		tcp_connection_close(hndl);
	}
    socket_proxy_list.Remove(*socketProxy);
}  // end OpnetProtoSimProcess::CloseSocket()


void OpnetProtoSimProcess::OnAccept(char* node_name)
{
    Ici* iciPtr = op_intrpt_ici();
    if (OPC_NIL != iciPtr)
    {
		IpT_Address remAddr;
		int remPort;
        int localPort;
		int connId;
		char iciformat[32];
		op_ici_format(iciPtr,iciformat);
		if (!strcmp("tcp_open_ind",iciformat))
		{
			op_ici_attr_get (iciPtr, "conn id", &connId);
			op_ici_attr_get (iciPtr, "rem addr", &remAddr);
			op_ici_attr_get (iciPtr, "rem port", &remPort);
			op_ici_attr_get (iciPtr, "local port", &localPort);
			ProtoAddress tcp_rem_addr;
			tcp_rem_addr.SimSetAddress(remAddr);
			tcp_rem_addr.SetPort(remPort);
			SetTcpRemAddress(tcp_rem_addr);
			printf("node: %s  time: %f   %s  connId: %d  remAddr: %x  remPort: %d  localPort: %d\n",
				node_name,op_sim_time(),iciformat,connId,remAddr,remPort,localPort);
			ProtoSimAgent::SocketProxy* tcpsockprxy = FindProxyByConn(connId);
			((TcpSocketProxy*)tcpsockprxy)->SetSrcAddr(tcp_rem_addr);
			//tcpsockprxy->GetSocket()->SetDestination(tcp_rem_addr);
			tcpsockprxy->GetSocket()->OnNotify(ProtoSocket::NOTIFY_INPUT);
		}
	}
}


void OpnetProtoSimProcess::OnReceive(int strm_indx,char* node_name)  // JPH 4/11/06 added strm_indx, 5/24/07 added node_name
{
#ifdef OP_DEBUG1
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::OnReceive()\n");
#endif
    // Get packet from stream ZERO
    Ici* iciPtr = op_intrpt_ici();
    if (OPC_NIL != iciPtr)
    {
        // 1) Get packet dest port and find which local socket it goes to
        int localPort;
		int connId;
		char iciformat[32];
		op_ici_format(iciPtr,iciformat);
		//if (!strcmp(iciformat,"tcp_status_ind_mgen"))
		if (!strcmp(iciformat,"tcp_status_ind"))
		{
			/********* TCP ******************************/
			op_ici_attr_get(iciPtr, "conn_id", &connId);
			SocketProxy* socketProxy = socket_proxy_list.FindProxyByConn(connId);
			if (socketProxy)
			{
				Packet* pkt = op_pk_get(strm_indx);
            
				ReceivePacketMonitor(iciPtr, pkt);
            
				char* recvData;
				op_pk_fd_get(pkt, 0, &recvData);
				// Get recv packet length
				unsigned int recvLen  = op_pk_bulk_size_get(pkt) / 8;
				ProtoAddress srcAddr;
				ProtoAddress dstAddr;
				// Pass packet content/info to socket proxy
				static_cast<TcpSocketProxy*>(socketProxy)->OnReceive(recvData, recvLen, srcAddr, dstAddr);
				op_prg_mem_free(recvData);
				op_pk_destroy(pkt); 
			}
		}
		else if (!strcmp(iciformat,"udp_command_v3"))
		{
			/********* UDP ******************************/
			op_ici_attr_get(iciPtr, "local_port", &localPort);
			SocketProxy* socketProxy = socket_proxy_list.FindProxyByPort(localPort);
			if (socketProxy)
			{
				Packet* pkt = op_pk_get(strm_indx);  // JPH 4/11/06 added strm_indx
            
				ReceivePacketMonitor(iciPtr, pkt); // JPH 2/16/06
            
				// LP - 3-8-04 - added
				//#ifdef OPNET_OLSR
				//			record_receiving_stat(Pkt);
				//#endif  // end LP
				// Get recv packet payload
				char* recvData;
				op_pk_fd_get(pkt, 0, &recvData);
				// Get recv packet length
				int recvLen  = op_pk_bulk_size_get(pkt) / 8;
				// Get source addr/port
				IpT_Address remoteAddr;
				op_ici_attr_get(iciPtr, "rem_addr", &remoteAddr);
				int remotePort;
				op_ici_attr_get(iciPtr, "rem_port", &remotePort);
				IpT_Address localAddr;
			
				op_ici_attr_get(iciPtr, "src_addr", &localAddr);
#ifdef OP_DEBUG1
				printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::OnReceive() - remoteAdd - %u, localAdrr = %u, rec_lgn = %d\n",
					remoteAddr, localAddr, recvLen);
#endif			
				ProtoAddress srcAddr;
				srcAddr.SimSetAddress(remoteAddr);
				srcAddr.SetPort(remotePort);
				ProtoAddress dstAddr;
				dstAddr.SimSetAddress(localAddr);
				dstAddr.SetPort(localPort);
				// Pass packet content/info to socket proxy
				static_cast<UdpSocketProxy*>(socketProxy)->OnReceive(recvData, recvLen, srcAddr, dstAddr);
				op_prg_mem_free(recvData);
				op_pk_destroy(pkt); 
			}
        }
		else if (!strcmp(iciformat,"sink_command"))
		{
			Packet* pkt = op_pk_get(strm_indx);  // JPH 4/11/06 added strm_indx
            
			ReceivePacketMonitor(iciPtr, pkt); // JPH 2/16/06
            
			// Get recv packet payload
			char* recvData;
			op_pk_fd_get(pkt, 0, &recvData);
			// Get recv packet length
			int recvLen  = op_pk_bulk_size_get(pkt) / 8;
			// Get source addr/port
			IpT_Address remoteAddr;
			op_ici_attr_get(iciPtr, "rem_addr", &remoteAddr);
			int remotePort;
			op_ici_attr_get(iciPtr, "rem_port", &remotePort);
			IpT_Address localAddr;
			
			op_ici_attr_get(iciPtr, "src_addr", &localAddr);
			op_ici_attr_get(iciPtr, "local_port", &localPort);
#ifdef OP_DEBUG1
			printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::OnReceive() - remoteAdd - %u, localAdrr = %u, rec_lgn = %d\n",
				remoteAddr, localAddr, recvLen);
#endif			
			ProtoAddress srcAddr;
			srcAddr.SimSetAddress(remoteAddr);
			srcAddr.SetPort(remotePort);
			ProtoAddress dstAddr;
			dstAddr.SimSetAddress(localAddr);
			dstAddr.SetPort(localPort);
			// Pass packet content/info to mgen sink
			HandleMgenMessage(recvData,recvLen,srcAddr);
			op_prg_mem_free(recvData);
			op_pk_destroy(pkt); 		
		}
		else
    	{
        	// Generate an error and end simulation.  
	    	op_sim_end ("Error: DoReceive() Unrecognized ici format", "", "", "");
		}			
    }
    else
    {
        // Generate an error and end simulation.  
	    op_sim_end ("Error: DoReceive() OPC_NIL cmd", "", "", "");
    }
}  // end OpnetProtoSimProcess::OnReceive()



/**********************************************************************************************/
/**************************      UdpSocketProxy     *******************************************/


// LP 6-21-04 - replaced for new Ici parameter
/*
OpnetProtoSimProcess::UdpSocketProxy::UdpSocketProxy(Objid udpProcessId)
 : udp_process_id(udpProcessId),
   mcast_ttl(255), mcast_loopback(false), 
   recv_data(NULL), recv_data_len(0)
*/
OpnetProtoSimProcess::UdpSocketProxy::UdpSocketProxy(OpnetProtoSimProcess* simProcess)  // JPH
 : sim_process(simProcess),
   mcast_ttl(255), mcast_loopback(false), 
   recv_data(NULL), recv_data_len(0), udp_command_ici(NULL)

   // end LP
{ 
#ifdef OP_DEBUG2
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::UdpSocketProxy::UdpSocketProxy(udpId = %ld)\n",
	udpProcessId);
#endif
}



OpnetProtoSimProcess::UdpSocketProxy::~UdpSocketProxy()
{
    // LP 6-21-04 - added
   op_ici_destroy (udp_command_ici);
   // end LP
}



bool OpnetProtoSimProcess::UdpSocketProxy::Bind(UINT16& thePort)
{
#ifdef OP_DEBUG1
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::UdpSocketProxy::Bind, udp_process_id = %d)\n",
	sim_process->udp_process_id);
#endif
    // (TBD) What happens if (0 == thePort) ???

    // LP 6-21-04 - replaced for new Udp_command_ici
    /*
    Ici* cmd = op_ici_create("udp_command_v3");
    op_ici_attr_set(cmd, "local_port", (int)thePort);
    op_ici_install(cmd);
	*/
    udp_command_ici = op_ici_create("udp_command_v3");
    op_ici_attr_set(udp_command_ici, "local_port", (int)thePort);
    op_ici_install(udp_command_ici);
	
	// end LP

    op_intrpt_force_remote(UDPC_COMMAND_CREATE_PORT, sim_process->GetUdpProcId()); // JPH 
    return true;       
}  // end OpnetProtoSimProcess::SocketAgent::Bind()




bool OpnetProtoSimProcess::UdpSocketProxy::SendTo(const char*         buffer, 
                                                  unsigned int&       buflen,
                                                  const ProtoAddress& dstAddr)
{
#ifdef OP_DEBUG1
printf("\tOpnetProtoSimProcess::UdpSocketProxy::SendTo: local_port %d, rem_port %d, rem_addr_%u\n",
		proto_socket->GetPort(), dstAddr.GetPort(), dstAddr.SimGetAddress()); // LP 2-10-04
#endif
    // (TBD) error check Opnet API calls ...
    Packet* pkt = op_pk_create(buflen*8);
    char* payload = (char*) op_prg_mem_copy_create((void*)buffer, buflen);
    op_pk_fd_set(pkt, 0, OPC_FIELD_TYPE_STRUCT, payload, 0,
                 op_prg_mem_copy_create, op_prg_mem_free, buflen);
	
	// LP - the following can be set up later  to be created once as a permanent member of
	// the OpnetProtoSimProcess.  Ici parameter can be updated anytime later when it
	// is used.  That will help to reduce the time to create Ici, then deleted at UDP

	// LP 6-21-04 - replaced to reduce memory usage
	/*
    Ici* cmd = op_ici_create("udp_command_v3"); 
    op_ici_attr_set(cmd, "local_port", proto_socket->GetPort());
    op_ici_attr_set(cmd, "rem_port", dstAddr.GetPort());
    op_ici_attr_set(cmd, "rem_addr", dstAddr.SimGetAddress());
    op_ici_install(cmd);
	*/
	
	op_ici_attr_set(udp_command_ici, "local_port", proto_socket->GetPort());
    op_ici_attr_set(udp_command_ici, "rem_port", dstAddr.GetPort());
    op_ici_attr_set(udp_command_ici, "rem_addr", dstAddr.SimGetAddress());
    op_ici_install(udp_command_ici);

	// end LP
    
    sim_process->TransmitPacketMonitor(udp_command_ici, pkt);  // JPH
	
    op_pk_send_forced(pkt, 0);
    return true;
}  // end OpnetProtoSimProcess::UdpSocketProxy::SendTo()



bool OpnetProtoSimProcess::UdpSocketProxy::RecvFrom(char*         buffer, 
                                                    unsigned int& numBytes, 
                                                    ProtoAddress& srcAddr)
{
#ifdef OP_DEBUG1
printf("\tOpnetProtoSimProcess::UdpSocketProxy::RecvFrom\n"); 
#endif
    if (recv_data)
    {
        if (numBytes >= recv_data_len)
        {
            numBytes = recv_data_len;

            memcpy(buffer, recv_data, numBytes);
			op_prg_mem_free (recv_data); // LP 6-25-04 - added
            srcAddr = src_addr;
            recv_data = NULL;
            recv_data_len = 0; 
            return true;
        }
        else
        {
            PLOG(PL_ERROR, "OpnetProtoSimProcess::UdpSocketProxy::RecvFrom buffer too small\n");
            numBytes = 0; 
            return false;    
        }        
    }
    else
    {
        PLOG(PL_WARN, "OpnetProtoSimProcess::UdpSocketProxy::RecvFrom no data ready\n");
        numBytes = 0; 
        return false;       
    }   
}  // end OpnetProtoSimProcess::UdpSocketProxy::RecvFrom()



bool OpnetProtoSimProcess::UdpSocketProxy::JoinGroup(const ProtoAddress& groupAddr)
{
    // (TBD)
	return true;
}  // end OpnetProtoSimProcess::SocketAgent::JoinGroup()


bool OpnetProtoSimProcess::UdpSocketProxy::LeaveGroup(const ProtoAddress& groupAddr)
{
    // (TBD)
	return true;
}  // end OpnetProtoSimProcess::SocketAgent::LeaveGroup()


void OpnetProtoSimProcess::UdpSocketProxy::OnReceive(char*               recvData, 
                                                     unsigned int        recvLen,
                                                     const ProtoAddress& srcAddr,
                                                     const ProtoAddress& dstAddr)
{
#ifdef OP_DEBUG1
printf("\tOpnetProtoSimProcess::UdpSocketProxy::OnReceive - RecvLen = %u\n", recvLen); // LP 6-8-04
#endif
    // (TBD) filter out loopback multicast traffic

	// LP 6-10-04 - replaced
    // recv_data = recvData;
    recv_data = (char*) op_prg_mem_copy_create((void*)recvData, recvLen);
 
    // end LP

    recv_data_len = recvLen;
    src_addr = srcAddr;
    if (proto_socket)
        proto_socket->OnNotify(ProtoSocket::NOTIFY_INPUT);
}  // end OpnetProtoSimProcess::UdpSocketProxy::OnReceive()




/**********************************************************************************************/
/**************************      TcpSocketProxy     *******************************************/


OpnetProtoSimProcess::TcpSocketProxy::TcpSocketProxy(OpnetProtoSimProcess* simProcess)
 : sim_process(simProcess),
   recv_data(NULL), recv_data_len(0), tcp_command_ici(NULL)
{ 
#ifdef OP_DEBUG2
printf("\topnetProtosimProcess.pr.c - OpnetProtoSimProcess::TcpSocketProxy::TcpSocketProxy()\n");
#endif
}


OpnetProtoSimProcess::TcpSocketProxy::~TcpSocketProxy()
{
   op_ici_destroy (tcp_command_ici);
}


bool OpnetProtoSimProcess::TcpSocketProxy::Bind(UINT16& thePort)
{
	local_port = thePort;
	return true;
}


bool OpnetProtoSimProcess::TcpSocketProxy::Connect(const ProtoAddress& dstAddr)
{
	// Open an active connection to dstAddr.
	ApiT_Tcp_App_Handle* hndl_ptr = &tcp_intf_hndl_copy(*(sim_process->GetTcpAppHandle()));
	IpT_Address rem_addr = dstAddr.SimGetAddress();
	TcpT_Port rem_port = GetPort(); // Assume that the remote port number is the same as the local port number.
	IpT_Address local_addr = GetTcpHostAddress().SimGetAddress();
	TcpT_Port loc_port = GetPort();
	int command = TCPC_COMMAND_OPEN_ACTIVE;
	int ip_qos = 0;
	int tcp_conn_id =
		tcp_connection_with_source_open (hndl_ptr, rem_addr, rem_port, local_addr, loc_port, command, ip_qos);
	if (tcp_conn_id == TCPC_CONN_ID_INVALID)
		return false;
	else
		{
		proto_socket->SetState(ProtoSocket::CONNECTED);
		//tcp_receive_command_send(hndl,1);
		conn_id = tcp_conn_id;
		sim_process->SetTcpAppHandle(*hndl_ptr,conn_id);
		return true;
		}
}


bool OpnetProtoSimProcess::TcpSocketProxy::Accept(ProtoSocket* theSocket)
{
	//ProtoSocket* socket = GetSocket();
	//socket->GetDestination() = GetTcpRemAddress();  // Set src address logged by RECV
	//socket->SetState(ProtoSocket::CONNECTED);
	if (theSocket)
		{
		OpnetProtoSimProcess::TcpSocketProxy* newTcpSocketProxy = new OpnetProtoSimProcess::TcpSocketProxy(sim_process);
		newTcpSocketProxy->conn_id = conn_id;
		newTcpSocketProxy->AttachSocket(*theSocket);
		theSocket->SetHandle(newTcpSocketProxy);
		sim_process->socket_proxy_list.Prepend(*newTcpSocketProxy);
		theSocket->GetDestination() = GetTcpRemAddress();  // Set src address logged by CONNECT
		theSocket->SetState(ProtoSocket::CONNECTED);
		}
	return true;
}


bool OpnetProtoSimProcess::TcpSocketProxy::Listen(UINT16 thePort)
{
	// Open a passive connection.
	ApiT_Tcp_App_Handle* hndl_ptr = &tcp_intf_hndl_copy(*(sim_process->GetTcpAppHandle()));
	IpT_Address rem_addr = 0;
	TcpT_Port rem_port = TCPC_PORT_UNSPEC;
	IpT_Address local_addr = GetTcpHostAddress().SimGetAddress();
	TcpT_Port loc_port = GetPort();
	int command = TCPC_COMMAND_OPEN_PASSIVE;
	int ip_qos = 0;
	int tcp_conn_id =
		tcp_connection_with_source_open (hndl_ptr, rem_addr, rem_port, local_addr, loc_port, command, ip_qos);
	if (tcp_conn_id == TCPC_CONN_ID_INVALID)
		return false;
	else
		{
		proto_socket->SetState(ProtoSocket::LISTENING);
		tcp_receive_command_send(*hndl_ptr,1);
		conn_id = tcp_conn_id;
		sim_process->SetTcpAppHandle(*hndl_ptr,conn_id);
		return true;
		}
}


bool OpnetProtoSimProcess::TcpSocketProxy::SendTo(const char*         buffer, 
                                                  unsigned int&       buflen,
                                                  const ProtoAddress& dstAddr)
{
	ApiT_Tcp_App_Handle* hndl_ptr = sim_process->GetTcpAppHandle(conn_id);
    Packet* pkt = op_pk_create(buflen*8);
    char* payload = (char*) op_prg_mem_copy_create((void*)buffer, buflen);
    op_pk_fd_set(pkt, 0, OPC_FIELD_TYPE_STRUCT, payload, 0,
                 op_prg_mem_copy_create, op_prg_mem_free, buflen);
	Ici* dummy_ici=0;
    sim_process->TransmitPacketMonitor(dummy_ici, pkt);  // JPH
	tcp_data_send(*hndl_ptr,pkt);
	return true;
}


bool OpnetProtoSimProcess::TcpSocketProxy::Send(const char*         buffer, 
                                                  unsigned int&     numBytes)
{
	// Dummy
	return false;
}


bool OpnetProtoSimProcess::TcpSocketProxy::RecvFrom(char*         buffer, 
                                                    unsigned int& numBytes, 
                                                    ProtoAddress& srcAddr)
{
	srcAddr = src_addr;
	return Recv(buffer,numBytes);
}


bool OpnetProtoSimProcess::TcpSocketProxy::Recv(char*         buffer, 
                                                unsigned int& numBytes)
{
    if (recv_data)
    {
        if (numBytes >= recv_data_len)
        {
            numBytes = recv_data_len;
            memcpy(buffer, recv_data+recv_data_read_index, numBytes);
			op_prg_mem_free (recv_data);
            recv_data = NULL;
            recv_data_len = 0; 
        }
        else
        {
            memcpy(buffer, recv_data+recv_data_read_index, numBytes);
			recv_data_read_index+=numBytes;
			recv_data_len-=numBytes;
        }        
        return true;
    }
    else
    {
        PLOG(PL_WARN, "OpnetProtoSimProcess::TcpSocketProxy::RecvFrom no data ready\n");
        numBytes = 0; 
        return false;       
    }   
}


void OpnetProtoSimProcess::TcpSocketProxy::OnReceive(char*               recvData, 
                                                     unsigned int        recvLen,
                                                     const ProtoAddress& srcAddr,
                                                     const ProtoAddress& dstAddr)
{
	ApiT_Tcp_App_Handle* hndl_ptr = sim_process->GetTcpAppHandle(conn_id);
	tcp_receive_command_send(*hndl_ptr,1);
    recv_data = (char*) op_prg_mem_copy_create((void*)recvData, recvLen);
    recv_data_len = recvLen;
	recv_data_read_index = 0;
    //src_addr = srcAddr;  // JPH 5/29/07 src_addr set by OpnetProtoSimProcess::OnAccept
    if (proto_socket)
        proto_socket->OnNotify(ProtoSocket::NOTIFY_INPUT);
}  // end OpnetProtoSimProcess::TcpSocketProxy::OnReceive()


bool OpnetProtoSimProcess::TcpSocketProxy::JoinGroup(const ProtoAddress& groupAddr)
{
    // definition of virtual function needed
	return true;
}  // end OpnetProtoSimProcess::SocketAgent::JoinGroup()


bool OpnetProtoSimProcess::TcpSocketProxy::LeaveGroup(const ProtoAddress& groupAddr)
{
    // definition of virtual function needed
	return true;
}  // end OpnetProtoSimProcess::SocketAgent::LeaveGroup()


ProtoSimAgent::SocketProxy* OpnetProtoSimProcess::TcpSocketProxy::TcpSockList::FindProxyByConn(int connId)
{
    TcpSocketProxy* next = (TcpSocketProxy*)SocketProxy::List::head;
    while (next)
    {
        if (next->GetConn() == connId)
            return (SocketProxy*)next;
        else
            next = (TcpSocketProxy*)next->GetNext();   
    }
    return NULL;
}  // end OpnetProtoSimProcess::TcpSocketProxy::TcpSockList::FindProxyByConn()