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Node.nc
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Node.nc
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/*
* ANDES Lab - University of California, Merced
* This class provides the basic functions of a network node.
*
* @author UCM ANDES Lab
* @date 2013/09/03
*
*/
#include <Timer.h>
#include "includes/command.h"
#include "includes/packet.h"
#include "includes/CommandMsg.h"
#include "includes/sendInfo.h"
#include "includes/channels.h"
#include "includes/TCP_packet.h"
#include "includes/socket.h"
//#define MAX_ROUTES 128;
typedef struct{
uint16_t node;
//uint16_t Q;
//uint16_t PacketSent;
//uint16_t PacketArr;
} Neighbor;
// neighbor struct that will hold a node and the quality of the node connection
typedef nx_struct table{ //Defines each entry in the routeing table
nx_uint8_t Destination;
nx_uint8_t NextHop;
nx_uint8_t Cost;
}table;
module Node{
uses interface Boot;
uses interface SplitControl as AMControl;
uses interface Receive;
uses interface Random as Random;
uses interface Timer<TMilli> as neighbortimer;
uses interface Timer<TMilli> as routingtimer;
uses interface Timer<TMilli> as TCPtimer;
uses interface SimpleSend as Sender;
uses interface Hashmap<socket_store_t> as SocketsTable;
uses interface Hashmap<table> as RoutingTable;
uses interface Transport;
uses interface List<Neighbor> as NeighborHood;
uses interface Hashmap<pack> as PacketCache;
//uses interface Quality<Qual> as Quality List
uses interface CommandHandler;
}
implementation{
pack sendPackage;
socket_t global_fd;
socket_store_t connections[MAX_NUM_OF_SOCKETS];
uint8_t Gpayload[20];
// Project 1 implementations (functions)
uint16_t seqNum=0;
uint16_t PacketSent;
uint16_t PacketArr;
float Q;
bool met(uint16_t neighbor);
bool inthemap( socket_t fd);
void findneighbor();
void Packhash(pack* Package, socket_t fd);
void printNeighbors();
socket_t getfd(TCPpack payload);
uint16_t getfdmsg(uint16_t src);
void ListHandler(pack *Package);
void EstablishedSend();
void replypackage(pack *Package);
TCPpack dataPayload(uint16_t destport,uint16_t srcport,uint16_t flag,uint16_t ACK,uint16_t seq,uint16_t Awindow, TCPpack payload);
TCPpack makePayload(uint16_t destport,uint16_t srcport,uint16_t flag,uint16_t ACK,uint16_t seq,uint16_t Awindow);
void makeTCPpacket(pack *Package, uint16_t src, uint16_t dest, uint16_t TTL, uint16_t Protocol, uint16_t seq,TCPpack payload, uint8_t length);
void makePack(pack *Package, uint16_t src, uint16_t dest, uint16_t TTL, uint16_t Protocol, uint16_t seq, uint8_t *payload, uint8_t length);
// end of project 1 functions
//Project 2 implementations (functions)]
uint16_t numRoutes =0;
table routingTable[255]= {0};
void forwarding(pack* Package);
void printRouteTable();
void localroute();
void Route_flood();
void checkdest(table* tmptable);
bool checkMin(table* tmptable);
// void UpdateRoutingTable(Route *newRoute, uint16_t numNewRoutes);
// end of Project 2 implementations (functions)
event void Boot.booted(){
call AMControl.start();
// a timer that will add and drop neighbors
// the timmer will have a oneshot of (250)
call neighbortimer.startOneShot(250);
call routingtimer.startOneShot(250);
dbg(GENERAL_CHANNEL, "Booted\n");
}
event void neighbortimer.fired(){
//calls nieghbor discovery discover
//Neighbor neighbor;
findneighbor();
}
event void routingtimer.fired(){
//calls nieghbor discovery discover
//Neighbor neighbor;
Route_flood();
}
event void AMControl.startDone(error_t err){
if(err == SUCCESS){
dbg(GENERAL_CHANNEL, "Radio On\n");
}else{
//Retry until successful
call AMControl.start();
}
}
event void AMControl.stopDone(error_t err){}
event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len){
Neighbor neighbor;
socket_store_t temp;
socket_store_t temp2;
socket_t fd;
table route[1];
// dbg(GENERAL_CHANNEL, "Packet Received\n");
if(len==sizeof(pack)){
pack* myMsg=(pack*) payload;
// Route_flood();
if(myMsg->protocol==PROTOCOL_LINKEDLIST){
memcpy(route, myMsg->payload, sizeof(route)*1);
route[0].NextHop=myMsg->src;
checkdest(route);
}
if(myMsg->TTL==0&&myMsg->protocol==PROTOCOL_PING){
// will drop packet when ttl expires packet will be dropped
// dbg(ROUTING_CHANNEL, "TTL has expired, packet from %d to %d will be dropped\n",myMsg->src, myMsg->dest);
}
if(myMsg->protocol==PROTOCOL_PING){
if( TOS_NODE_ID!=myMsg->dest){
forwarding(myMsg);
//Packhash(myMsg);
}
else{
dbg(ROUTING_CHANNEL, "I have recived a message from %d and it says %s\n",myMsg->src, myMsg->payload);
}
}
if(myMsg->protocol==PROTOCOL_TCP){
// if ping reply add nieghbor to neighbor list && will take care of nodes being added or dropped
if( TOS_NODE_ID!=myMsg->dest){
forwarding(myMsg);
//Packhash(myMsg);
}else{
TCPpack payload;
memcpy(payload.payload, myMsg->payload, sizeof(payload.payload)*1);
switch (payload.payload[2]){
case SYN_Flag:
fd = getfd(payload);
temp = call SocketsTable.get(fd);
dbg(TRANSPORT_CHANNEL, "SERVER:I have recived a SYN_Flag from %d for Port %d\n",myMsg->src, temp.src.port);
call SocketsTable.remove(fd);
temp.state = SYN_RCVD;
temp.dest.port = payload.payload[1];
temp.dest.addr=myMsg->src;
temp.effectiveWindow=payload.payload[5];
call SocketsTable.insert(fd, temp);
dbg(TRANSPORT_CHANNEL, "SERVER: Binded socket to dest addr:%d dest port: %d\n",temp.dest.addr, temp.dest.port);
payload = makePayload( temp.dest.port, temp.src.port,SYN_Ack_Flag,myMsg->seq+1,myMsg->seq,0);
makeTCPpacket(&sendPackage, TOS_NODE_ID,myMsg->src, 3, PROTOCOL_TCP,myMsg->seq+1,payload,TCP_PACKET_MAX_PAYLOAD_SIZE );
Packhash(&sendPackage,fd);
forwarding(&sendPackage);
break;
case SYN_Ack_Flag:
fd = getfd(payload);
temp = call SocketsTable.get(fd);
call SocketsTable.remove(fd);
temp.state = ESTABLISHED;
call SocketsTable.insert(fd, temp);
dbg(TRANSPORT_CHANNEL, "CLIENT: Connection to Server Port Established %d\n", temp.dest.port);
payload = makePayload( payload.payload[1], payload.payload[0],Ack_Flag,myMsg->seq,myMsg->seq,0);
makeTCPpacket(&sendPackage, TOS_NODE_ID,myMsg->src, 3, PROTOCOL_TCP,myMsg->seq,payload,TCP_PACKET_MAX_PAYLOAD_SIZE ); //not complete
Packhash(&sendPackage,fd);
forwarding(&sendPackage);
break;
case Ack_Flag:
fd = getfd(payload);
temp = call SocketsTable.get(fd);
call SocketsTable.remove(fd);
temp.state = ESTABLISHED;
call SocketsTable.insert(fd, temp);
dbg(TRANSPORT_CHANNEL, "SERVER: Connection to Client Port Established\n");
//make a list of "ports"
break;
default:
break;
}
//call TCPtimer.startOneShot(12000);
}
}
if(myMsg->protocol==PROTOCOL_whisper){
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
if( TOS_NODE_ID!=myMsg->dest){
forwarding(myMsg);
//Packhash(myMsg);
}
if(TOS_NODE_ID==myMsg->dest){
TCPpack payload;
uint16_t i =0,j=0;
uint8_t A =0;
uint16_t size = call SocketsTable.size();
pack p,msg;
fd = getfdmsg(myMsg->src);
memcpy(payload.payload, myMsg->payload, sizeof( myMsg->payload)*1);
temp = call SocketsTable.get(fd);
// dbg(TRANSPORT_CHANNEL,"Message From: %s \n", myMsg->payload);
//====================================================================================================================================
for(i;i<=size;i++){
temp2 = call SocketsTable.get(i);
if(temp2.dest.addr==myMsg->src){
while(temp.user[A]!=32){
p.payload[A] = temp.user[A];
A++;
}
makePack(&sendPackage, TOS_NODE_ID, myMsg->seq, 3, PROTOCOL_Server, 0, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
makePack(&sendPackage, TOS_NODE_ID, myMsg->seq, 3, PROTOCOL_Server, 7, myMsg->payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
}
//====================================================================================================================================
}
}
if(myMsg->protocol==PROTOCOL_Server){
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
if( TOS_NODE_ID!=myMsg->dest){
forwarding(myMsg);
//Packhash(myMsg);
}
if(TOS_NODE_ID==myMsg->dest){
TCPpack payload;
uint16_t i =0,j=0;
uint8_t A =0;
pack p,msg;
fd = getfdmsg(myMsg->src);
memcpy(payload.payload, myMsg->payload, sizeof( myMsg->payload)*1);
temp = call SocketsTable.get(fd);
if(temp.TYPE==SERVER){
//-------------------------------------------------------------------------------------------------------------------cmd104 actural 109
if (payload.payload[2] =104){
//sending the message to all
uint16_t size = call SocketsTable.size();
for(i;i<=size;i++){
temp2 = call SocketsTable.get(i);
if(temp2.dest.addr!=temp.dest.addr){
while(temp.user[A]!=32){
p.payload[A] = temp.user[A];
A++;
}
makePack(&sendPackage, TOS_NODE_ID, temp2.dest.addr, 3, PROTOCOL_Server, 0, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
A=0;
while(j<102){
msg.payload[j]=myMsg->payload[6+j];
if(myMsg->payload[6+j]==13){
j=102;
}
j++;
}
makePack(&sendPackage, TOS_NODE_ID, temp2.dest.addr, 3, PROTOCOL_Server, 104, msg.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
}
}
}
//---------------------------------------------------------------------------------------------------------------------------------end of cmd 104
//-----------------------------------------------------------------------------------------------------------------------------------cmd 109
//-----------------------------------------------------------------------------------------------------------------------------------cmd end 109
if(temp.TYPE==CLIENT){
if(myMsg->seq==0){
dbg(TRANSPORT_CHANNEL,"Message From: %s \n", myMsg->payload);
}else{
dbg(TRANSPORT_CHANNEL,"Message: %s \n", myMsg->payload);
}
printf("\n");
}
}
}
if(myMsg->protocol==PROTOCOL_TCPDATA){
if( TOS_NODE_ID!=myMsg->dest){
forwarding(myMsg);
//Packhash(myMsg);
}
if(TOS_NODE_ID==myMsg->dest){
TCPpack payload;
uint16_t i =0;
uint8_t A =0;
pack p;
fd = getfdmsg(myMsg->src);
memcpy(payload.payload, myMsg->payload, sizeof( myMsg->payload)*1);
// dbg(TRANSPORT_CHANNEL, "SERVER: window %d\n ",PACKET_MAX_PAYLOAD_SIZE );
temp = call SocketsTable.get(fd);
// call SocketsTable.remove(fd);
switch (temp.TYPE){
case SERVER:
if(myMsg->payload[2]==Fin_Flag){
dbg(TRANSPORT_CHANNEL,"FIN FLAG for Port (%d)\n",temp.src.port );
// dbg(TRANSPORT_CHANNEL,"Reading last Data for Port (%d): ", temp.src.port);
for(i; i<myMsg->payload[5];i++){
//
// dbg(TRANSPORT_CHANNEL,"------------------------next expected %d \n", temp.nextExpected);
if(myMsg->payload[3] !=104){
temp.rcvdBuff[i] = myMsg->payload[i+6]; //copy payload into received buffer
}else{
temp.user[i]=myMsg->payload[i+6];
//dbg(TRANSPORT_CHANNEL,"user %c\n", temp.user[i]);
}
//printf("%c,",temp.rcvdBuff[i]);
temp.lastRead = temp.rcvdBuff[i];
temp.state=ESTABLISHED;
// temp.nextExpected = temp.rcvdBuff[i]+1;
// dbg(TRANSPORT_CHANNEL,"next expected %d \n", temp.nextExpected);
}
dbg(TRANSPORT_CHANNEL," ----------------------(%c): ....destport:.%d, fd:%d\n", temp.user[0], temp.dest.port,fd);
//dbg(TRANSPORT_CHANNEL,"Reading Data: ");
printf("\n" );
p.payload[0]=temp.dest.port;
p.payload[1]=temp.src.port;
p.payload[2]=Fin_Ack_Flag;
p.payload[3]= temp.lastRead;
p.payload[4]= temp.nextExpected;
temp.effectiveWindow=myMsg->payload[5];
call SocketsTable.remove(fd);
call SocketsTable.insert(fd, temp);
makePack(&sendPackage, TOS_NODE_ID,myMsg->src , 3, PROTOCOL_TCPDATA, 0, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
if(myMsg->payload[2]==Data_Flag){
dbg(TRANSPORT_CHANNEL,"Reading Data for Port (%d): ", temp.src.port);
for(i; i<=temp.effectiveWindow;i++){
// dbg(TRANSPORT_CHANNEL,"------------------------next expected %d \n", temp.nextExpected);
if( temp.nextExpected==myMsg->payload[i+6]){
temp.rcvdBuff[i] = myMsg->payload[i+6]; //copy payload into received buffer
//dbg(TRANSPORT_CHANNEL,"bit %d\n",myMsg->payload[i+6]);
printf("%d,",temp.rcvdBuff[i]);
temp.lastRead = temp.rcvdBuff[i];
temp.nextExpected = temp.rcvdBuff[i]+1;
// dbg(TRANSPORT_CHANNEL,"next expected %d \n", temp.nextExpected);
}else{
// dbg(TRANSPORT_CHANNEL,"getting wrong bit%d\n",myMsg->payload[i+6]);
break;
}
}
//dbg(TRANSPORT_CHANNEL,"Reading Data: ");
printf("\n" );
p.payload[0]=temp.dest.port;
p.payload[1]=temp.src.port;
p.payload[2]=Data_Ack_Flag;
p.payload[3]= temp.lastRead;
p.payload[4]= temp.nextExpected;
temp.effectiveWindow=myMsg->payload[5];
call SocketsTable.remove(fd);
call SocketsTable.insert(fd, temp);
makePack(&sendPackage, TOS_NODE_ID,myMsg->src , 3, PROTOCOL_TCPDATA, 0, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
// dbg(TRANSPORT_CHANNEL,"Next bit: %d", temp.nextExpected);
}
break;
case CLIENT:
if(myMsg->payload[2]==Data_Ack_Flag){
fd = getfdmsg(myMsg->src);
temp.lastAck = myMsg->payload[3];
call SocketsTable.remove(fd);
call SocketsTable.insert(fd, temp);
//dbg(TRANSPORT_CHANNEL, "---------- last bit rec %d\n ", temp.lastAck);
// call TCPtimer.startOneShot(12000);
EstablishedSend();
}
if(myMsg->payload[2]==Fin_Ack_Flag){
fd = getfdmsg(myMsg->src);
temp.lastAck = myMsg->payload[3];
call SocketsTable.remove(fd);
call SocketsTable.insert(fd, temp);
// dbg(TRANSPORT_CHANNEL, "---------- last bit rec %d\n ", temp.lastAck);
// call TCPtimer.startOneShot(12000);
if(temp.lastAck!=temp.Transfer_Buffer){
//EstablishedSend();
}
else{
dbg(TRANSPORT_CHANNEL, "ALL DATA RECIEVED\n");
dbg(TRANSPORT_CHANNEL, "READY TO CLOSE \n");
temp.state = CLOSED;
dbg(TRANSPORT_CHANNEL, "CLIENT CLOSED \n");
call SocketsTable.remove(fd);
call SocketsTable.insert(fd, temp);
}
}
break;
default:
break;
}
// call TCPtimer.startOneShot(12000);
}
}
if(myMsg->protocol==PROTOCOL_PINGREPLY){
// if ping reply add nieghbor to neighbor list && will take care of nodes being added or dropped
ListHandler(myMsg);
}
// This will take care of the dest node from reciving the deliverd packet again and again...
//-------------------------------------------endofneighbordiscovery
return msg;
}
dbg(GENERAL_CHANNEL, "Unknown Packet Type %d\n", len);
return msg;
}
void printusers(){
socket_store_t temp;
uint16_t destport, srcport, flag, ACK, seq, Awindow;
pack p;
uint16_t size = call SocketsTable.size();
uint16_t i =1;
uint16_t j;
uint16_t k=0;
dbg(TRANSPORT_CHANNEL, "listUsrRply ");
for(i; i<=size;i++){
j=0;
temp = call SocketsTable.get(i);
if(temp.state==ESTABLISHED){
while(temp.user[j]!=32){
printf("%c",temp.user[j]);
j++;
}
printf(", ");
}
}
printf("\r\n");
}
//-----------------------------------------------------------------------------------------------------------------------------------------
void TCPCHAT_SEND(uint8_t *payload, uint8_t CMD,pack p){
socket_store_t temp;
uint16_t destport, srcport, flag, ACK, seq, Awindow,i=0, j=0,k=0;
//fill in payload and send
temp = call SocketsTable.get(1);
Awindow = (temp.Transfer_Buffer-temp.lastAck)%16;
for(i;i< Awindow;i++){
if(CMD==109){
p.payload[i+6]= payload[4+j];
j++;
}
}
if(CMD==109){
makePack(&sendPackage, TOS_NODE_ID, temp.dest.addr, 3, PROTOCOL_Server, CMD, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
if(CMD==119){
for(i;i< Awindow;i++){
if(CMD==109){
p.payload[i+6]= payload[4+j];
j++;
}
}
// makePack(&sendPackage, TOS_NODE_ID, 1, 3, PROTOCOL_Server, CMD, p.payload, PACKET_MAX_PAYLOAD_SIZE);
//forwarding(&sendPackage);
}
}
void TCPchat(uint8_t *payload, uint8_t CMD, uint8_t destination){
socket_store_t temp;
uint16_t destport, srcport, flag, ACK, seq, Awindow,whitespace1=0, end=0,i=0,j=0;
pack p;
temp = call SocketsTable.get(1);
p.payload[0] = 41;
p.payload[1] = temp.src.port;
p.payload[2] = CMD;
p.payload[3] = 0;
p.payload[4] = 1;
//-----------------------------------------------cmd 109
if(CMD==109){
while(end<1){
// dbg(TRANSPORT_CHANNEL, "%d---------------------\n", payload[i]);
if(payload[i]==32 && whitespace1==0){
whitespace1=i;
}
if(payload[i]==13){
end=i;
}
i++;
}
p.payload[5] = 0;
temp.Transfer_Buffer = (end-whitespace1);
call SocketsTable.remove(1);
call SocketsTable.insert(1, temp);
TCPCHAT_SEND(payload, CMD, p);
}
//-----------------------------------------------119
if(CMD==119){
while(end<1){
//dbg(TRANSPORT_CHANNEL, "%d---------------------\n", payload[i]);
if(payload[i]==32 && whitespace1==0){
whitespace1=i;
dbg(TRANSPORT_CHANNEL, "%d-whitespace 2\n", i);
}
if(payload[i]==32 && whitespace1!=0){
whitespace1=i;
// dbg(TRANSPORT_CHANNEL, "%d-whitespace 2\n", i);
}
if(whitespace1!=0){
p.payload[j] = payload[i];
}
if(payload[i]==13){
end=i;
}
i++;
}
temp.Transfer_Buffer = (end-whitespace1);
dbg(TRANSPORT_CHANNEL, "%d\n", temp.Transfer_Buffer);
call SocketsTable.remove(1);
call SocketsTable.insert(1, temp);
makePack(&sendPackage, TOS_NODE_ID, 1, 3, PROTOCOL_Server, destination, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
//----------------------------------------------
}
event void CommandHandler.ping(uint16_t destination, uint8_t *payload){
socket_store_t temp;
pack p;
uint16_t destport, srcport, flag, ACK, seq, Awindow,whitespace1=0, end=0,i=0,j=0;
//-----------------------
if(payload[0]==104){
dbg(TRANSPORT_CHANNEL, "%s", payload );
dbg(TRANSPORT_CHANNEL, "establishing connection to server....\n" );
// signal CommandHandler.setTestClient(1, 41, destination, 104);
signal CommandHandler.setAppClient(payload, destination);
}
//-------------------------------------------------------------------------
if(payload[0]==108){
// dbg(TRANSPORT_CHANNEL, "%s________________ CMD: %d\n", payload ,payload[0]);
printusers();
}
if(payload[0]==109){
// dbg(TRANSPORT_CHANNEL, "%s________________ CMD: %d\n", payload ,payload[0]);
TCPchat(payload, payload[0], destination);
}
if(payload[0]==119){
while(end<1){
//dbg(TRANSPORT_CHANNEL, "%c---------------------%d\n", p.payload[j],j);
if(payload[i]==32){
whitespace1++;
}
if(payload[i]==13){
end=i;
}
if(whitespace1>=2&&end<1){
p.payload[j] = payload[i];
j++;
// dbg(TRANSPORT_CHANNEL, "%c\n", p.payload[j]);
}
i++;
}
temp.Transfer_Buffer = (end-whitespace1);
dbg(TRANSPORT_CHANNEL, "%s\n", payload);
makePack(&sendPackage, TOS_NODE_ID, 1, 3, PROTOCOL_whisper, destination, p.payload, PACKET_MAX_PAYLOAD_SIZE);
forwarding(&sendPackage);
}
}
//--------------------------------------------------------------------------project 1 functions
//met will check if we already have node in neighbor list
bool met(uint16_t neighbor){
Neighbor node;
uint16_t i,size = call NeighborHood.size();
for(i =0; i < size;i++){
node=call NeighborHood.get(i);
if(node.node==neighbor){
// dbg(GENERAL_CHANNEL, "We have already met dude im node: %d \n", neighbor );
return TRUE;
}
}
return FALSE;
}
//----------------------------------------------------------------------- ListHandler will push the nodes into a list
void ListHandler(pack* Package){
Neighbor neighbor;
if (!met(Package->src)){
localroute();
dbg(NEIGHBOR_CHANNEL, "Node %d was added to %d's Neighborhood\n", Package->src, TOS_NODE_ID);
neighbor.node = Package->src;
call NeighborHood.pushback(neighbor);
PacketArr++;
PacketSent;
localroute();
Q=((PacketSent)/((float)PacketArr));
// dbg(GENERAL_CHANNEL, "Havent met you %d\n", Package->src);
}
}
//---------------------------------------------------------------------------------
//------------------------------------------------------------------------------------findneighbor function
void findneighbor(){
Neighbor neighbor;
char * msg;
msg = "Help";
dbg(NEIGHBOR_CHANNEL, "Sending help signal to look for neighbor! \n");
makePack(&sendPackage, TOS_NODE_ID, AM_BROADCAST_ADDR, 2, PROTOCOL_PINGREPLY, 0, (uint8_t *)msg, (uint8_t)sizeof(msg));
call Sender.send(sendPackage, AM_BROADCAST_ADDR);
// neighbor.PacketSent++;
PacketSent++;
}
//-----------------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------------------ reply message will be sent to node who sent ping
void replypackage(pack* Package){
makePack(&sendPackage, TOS_NODE_ID, AM_BROADCAST_ADDR, 0, PROTOCOL_PINGREPLY, 0, 0, 0);
call Sender.send(sendPackage, AM_BROADCAST_ADDR);
}
//------------------------------------------------------------------------------------------------------- inthehashmap will check if node already has packet in cache
bool inthemap(socket_t fd){
if(!call PacketCache.contains(fd)){
//call PacketCache.remove(Package->src);
dbg(FLOODING_CHANNEL, "Adding packet \n" );
return FALSE;
}
if(call PacketCache.contains(fd)){
//ignore help signal just add to neighborhood
return TRUE;
}
}
//---------------------------------------------Flood will create flooding message and will send it to all neighboring nodes (this is accomplished by iterating thru neighbor list and making flooding packet)
void flood(pack* Package){
Neighbor node;
Neighbor neighbor;
uint16_t i,size = call NeighborHood.size();
for(i =0; i < size;i++){
node=call NeighborHood.get(i);
if(node.node!=0&&node.node!=Package->src){
dbg(FLOODING_CHANNEL, "Flooding Packet to : %d \n", node.node );
makePack(&sendPackage, Package->src, Package->dest, Package->TTL-1, PROTOCOL_PING, Package->seq, (uint8_t*) Package->payload, sizeof( Package->payload));
call Sender.send(sendPackage, node.node);
//dbg(FLOODING_CHANNEL, "The Packets sent %d\n", neighbor.PackSent);
}
}
}
//-----------------------------------------------------------------------------
//this function will push packet to our node cache(PacketCache)
void Packhash(pack* Package, socket_t fd){
if(!inthemap(fd)&&Package->src==TOS_NODE_ID){
call PacketCache.insert(fd,sendPackage);
}
if(inthemap(fd)&&Package->src==TOS_NODE_ID){
call PacketCache.remove(fd);
call PacketCache.insert(fd,sendPackage);
}
}
pack getpack(socket_t fd){
pack temp;
temp = call PacketCache.get(fd);
return temp;
}