TCPSessionApp Class Reference

#include <TCPSessionApp.h>

List of all members.

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Detailed Description

Single-connection TCP application.

Public Member Functions
	TCPSessionApp ()
Protected Types
typedef std::vector< Command >	CommandVector
Protected Member Functions
void	parseScript (const char *script)
void	waitUntil (simtime_t t)
void	count (cMessage *msg)
virtual void	activity ()
virtual void	finish ()
Protected Attributes
CommandVector	commands
TCPSocket	socket
int	packetsRcvd
int	bytesRcvd
int	indicationsRcvd
Classes
struct	Command

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Member Typedef Documentation

typedef std::vector<Command> TCPSessionApp::CommandVector [protected]

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Constructor & Destructor Documentation

TCPSessionApp::TCPSessionApp (   )  [inline]

: cSimpleModule(32768) {}

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Member Function Documentation

void TCPSessionApp::activity (   )  [protected, virtual]

{ packetsRcvd = bytesRcvd = indicationsRcvd = 0; WATCH(packetsRcvd); WATCH(bytesRcvd); WATCH(indicationsRcvd); // parameters const char *address = par("address"); int port = par("port"); const char *connectAddress = par("connectAddress"); int connectPort = par("connectPort"); bool active = par("active"); simtime_t tOpen = par("tOpen"); simtime_t tSend = par("tSend"); long sendBytes = par("sendBytes"); simtime_t tClose = par("tClose"); const char *script = par("sendScript"); parseScript(script); if (sendBytes>0 && commands.size()>0) throw new cException("cannot use both sendScript and tSend+sendBytes"); socket.setOutputGate(gate("tcpOut")); // open waitUntil(tOpen); socket.bind(*address ? IPvXAddress(address) : IPvXAddress(), port); EV << "issuing OPEN command\n"; if (ev.isGUI()) displayString().setTagArg("t",0, active?"connecting":"listening"); if (active) socket.connect(IPAddressResolver().resolve(connectAddress), connectPort); else socket.listen(); // wait until connection gets established while (socket.state()!=TCPSocket::CONNECTED) { socket.processMessage(receive()); if (socket.state()==TCPSocket::SOCKERROR) return; } EV << "connection established, starting sending\n"; if (ev.isGUI()) displayString().setTagArg("t",0,"connected"); // send if (sendBytes>0) { waitUntil(tSend); EV << "sending " << sendBytes << " bytes\n"; cMessage *msg = new cMessage("data1"); msg->setByteLength(sendBytes); socket.send(msg); } for (CommandVector::iterator i=commands.begin(); i!=commands.end(); ++i) { waitUntil(i->tSend); EV << "sending " << i->numBytes << " bytes\n"; cMessage *msg = new cMessage("data1"); msg->setByteLength(i->numBytes); socket.send(msg); } // close if (tClose>=0) { waitUntil(tClose); EV << "issuing CLOSE command\n"; if (ev.isGUI()) displayString().setTagArg("t",0,"closing"); socket.close(); } // wait until peer closes too and all data arrive for (;;) { cMessage *msg = receive(); count(msg); socket.processMessage(msg); } }

void TCPSessionApp::count (  cMessage *  msg  )  [protected]

{ if (msg->kind()==TCP_I_DATA || msg->kind()==TCP_I_URGENT_DATA) { packetsRcvd++; bytesRcvd+=msg->byteLength(); } else { indicationsRcvd++; } }

void TCPSessionApp::finish (   )  [protected, virtual]

{ EV << fullPath() << ": received " << bytesRcvd << " bytes in " << packetsRcvd << " packets\n"; }

void TCPSessionApp::parseScript (  const char *  script  )  [protected]

{ const char *s = script; while (*s) { Command cmd; // parse time while (isspace(*s)) s++; if (!*s || *s==';') break; const char *s0 = s; cmd.tSend = strtod(s,&const_cast<char *&>(s)); if (s==s0) throw new cException("syntax error in script: simulation time expected"); // parse number of bytes while (isspace(*s)) s++; if (!isdigit(*s)) throw new cException("syntax error in script: number of bytes expected"); cmd.numBytes = atoi(s); while (isdigit(*s)) s++; // add command commands.push_back(cmd); // skip delimiter while (isspace(*s)) s++; if (!*s) break; if (*s!=';') throw new cException("syntax error in script: separator ';' missing"); s++; while (isspace(*s)) s++; } }

void TCPSessionApp::waitUntil (  simtime_t  t  )  [protected]

{ if (simTime()>=t) return; cMessage *timeoutMsg = new cMessage("timeout"); scheduleAt(t, timeoutMsg); cMessage *msg=NULL; while ((msg=receive())!=timeoutMsg) { count(msg); socket.processMessage(msg); } delete timeoutMsg; }

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Member Data Documentation

int TCPSessionApp::bytesRcvd [protected]

CommandVector TCPSessionApp::commands [protected]

int TCPSessionApp::indicationsRcvd [protected]

int TCPSessionApp::packetsRcvd [protected]

TCPSocket TCPSessionApp::socket [protected]

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The documentation for this class was generated from the following files:

• TCPSessionApp.h
• TCPSessionApp.cc

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