Network Class Reference

#include <network.h>

List of all members.

Public Member Functions
	Network (NetworkAddress addr, double reliability, VoidFunctionPtr readAvail, VoidFunctionPtr writeDone, int callArg)
	~Network ()
void	Send (PacketHeader hdr, char *data)
PacketHeader	Receive (char *data)
void	SendDone ()
void	CheckPktAvail ()

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Constructor & Destructor Documentation

Network::Network (  NetworkAddress  addr, double  reliability, VoidFunctionPtr  readAvail, VoidFunctionPtr  writeDone, int  callArg )

Definition at line 25 of file network.cc. References AssignNameToSocket(), FALSE, interrupt, PacketHeader::length, NetworkAddress, NetworkRecvInt, NetworkTime, OpenSocket(), Interrupt::Schedule(), and VoidFunctionPtr. { ident = addr; if (reliability < 0) chanceToWork = 0; else if (reliability > 1) chanceToWork = 1; else chanceToWork = reliability; // set up the stuff to emulate asynchronous interrupts writeHandler = writeDone; readHandler = readAvail; handlerArg = callArg; sendBusy = FALSE; inHdr.length = 0; sock = OpenSocket(); sprintf(sockName, "SOCKET_%d", (int)addr); AssignNameToSocket(sockName, sock); // Bind socket to a filename // in the current directory. // start polling for incoming packets interrupt->Schedule(NetworkReadPoll, (int)this, NetworkTime, NetworkRecvInt); }

Network::~Network (   )

Definition at line 49 of file network.cc. References CloseSocket(), and DeAssignNameToSocket(). { CloseSocket(sock); DeAssignNameToSocket(sockName); }

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Member Function Documentation

void Network::CheckPktAvail (   )

Definition at line 59 of file network.cc. References ASSERT, DEBUG(), PacketHeader::from, interrupt, PacketHeader::length, MaxPacketSize, MaxWireSize, NetworkRecvInt, NetworkTime, Statistics::numPacketsRecvd, PollSocket(), ReadFromSocket(), Interrupt::Schedule(), stats, and PacketHeader::to. { // schedule the next time to poll for a packet interrupt->Schedule(NetworkReadPoll, (int)this, NetworkTime, NetworkRecvInt); if (inHdr.length != 0) // do nothing if packet is already buffered return; if (!PollSocket(sock)) // do nothing if no packet to be read return; // otherwise, read packet in char *buffer = new char[MaxWireSize]; ReadFromSocket(sock, buffer, MaxWireSize); // divide packet into header and data inHdr = *(PacketHeader *)buffer; ASSERT((inHdr.to == ident) && (inHdr.length <= MaxPacketSize)); bcopy(buffer + sizeof(PacketHeader), inbox, inHdr.length); delete []buffer ; DEBUG('n', "Network received packet from %d, length %d...\n", (int) inHdr.from, inHdr.length); stats->numPacketsRecvd++; // tell post office that the packet has arrived (*readHandler)(handlerArg); }

PacketHeader Network::Receive (  char *  data  )

Definition at line 129 of file network.cc. References PacketHeader::length. { PacketHeader hdr = inHdr; inHdr.length = 0; if (hdr.length != 0) bcopy(inbox, data, hdr.length); return hdr; }

void Network::Send (  PacketHeader  hdr, char *  data )

Definition at line 102 of file network.cc. References ASSERT, DEBUG(), FALSE, PacketHeader::from, interrupt, PacketHeader::length, MaxPacketSize, MaxWireSize, NetworkSendInt, NetworkTime, Random(), Interrupt::Schedule(), SendToSocket(), and PacketHeader::to. { char toName[32]; sprintf(toName, "SOCKET_%d", (int)hdr.to); ASSERT((sendBusy == FALSE) && (hdr.length > 0) && (hdr.length <= MaxPacketSize) && (hdr.from == ident)); DEBUG('n', "Sending to addr %d, %d bytes... ", hdr.to, hdr.length); interrupt->Schedule(NetworkSendDone, (int)this, NetworkTime, NetworkSendInt); if (Random() % 100 >= chanceToWork * 100) { // emulate a lost packet DEBUG('n', "oops, lost it!\n"); return; } // concatenate hdr and data into a single buffer, and send it out char *buffer = new char[MaxWireSize]; *(PacketHeader *)buffer = hdr; bcopy(data, buffer + sizeof(PacketHeader), hdr.length); SendToSocket(sock, buffer, MaxWireSize, toName); delete []buffer; }

void Network::SendDone (   )

Definition at line 89 of file network.cc. References FALSE, Statistics::numPacketsSent, and stats. { sendBusy = FALSE; stats->numPacketsSent++; (*writeHandler)(handlerArg); }

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

• network.h
• network.cc

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