am looking to have c++ or c program on windows work as schedular of Round Robin type which could implement Weighted Fair Queueing, i sent sample program so simelar one with simple report or notes expalining the structure of your program.m regards hatim
The PC Switch

 

Scheduler

 

*/

 

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/socket.h> // socket() & bind()

#include <errno.h> // for DieWithError() function

#include <arpa/inet.h> // sockaddr_in

 

// Defining all the input and output ports of the scheduler

#define INPUT_PORT 50002

#define OUTPUT_PORT 50003

#define LOCAL_ADDRESS "127.0.0.1"

#define MAX_MSG_LEN 200

 

typedef struct packet packet; // Struct of packet being sent between each module

struct packet {

char ip_dest[4][9];

char ip_source[4][9];

short int dataLength;

char data[100];

int frameCheck;

int fromPort;

int toPort;

int sequenceNum;

int portSequenceNum;

int timer;

};

 

typedef struct packetBuffer packetBuffer;

// Declare buffer struct that holds packet struct

struct packetBuffer {

packet queuedPacket;

packetBuffer *nextSource;

packetBuffer *nextSameSource;

};

 

// Misc functions

void DieWithError(char *errorMessage);

int bin2dec(char *binary);

 

int main(void) {

struct sockaddr_in fabOUT_addr;// client info (fabric) variable, data given when received message

struct sockaddr_in schedIN_addr;// struct for incoming packets

struct sockaddr_in schedOUT_addr;// struct for outgoing packets

unsigned int fabAddrLen;// int to store length of client address (fabric) data when received

packet recvPacket, outGoing;// packet struct that will be received

int sockIN, sockOUT, recvMsgLen, n, ip[4], i=0, port, pIP[4], qIP[4], dropped=0, time=0, lastTime=0, timeToSend=4, maxSameSource=4;

packetBuffer *current = NULL;// keep track of where loop is pointing to in queue row

packetBuffer *newPacket = NULL;// used when creating new queue element

    packetBuffer *temp = NULL; // temp packetBuffer element when deleting root of queue row

    packetBuffer *previous[8]; // keep track of previous element in queue

packetBuffer *nextSend[8];// pointer to next element to be sent on port n

packetBuffer *root[8];// array of queues, queue 0 is for gateway port, 1-7 corresponding to other ports

 

//----------------Network code----------------

// Open socket

if((sockIN = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

DieWithError("socket() failed");

if((sockOUT = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

DieWithError("socket() failed");

 

// Construct local address structure

bzero((char *)&schedIN_addr, sizeof(schedIN_addr));// zeroes out struct before data copied

    schedIN_addr.sin_family = AF_INET; // specifies Address Family

    schedIN_addr.sin_addr.s_addr = htonl(INADDR_ANY); // accept from any network interface

    schedIN_addr.sin_port = htons(INPUT_PORT); // Using port 50002

    // Construct outgoing address structure

bzero((char *)&schedOUT_addr,sizeof(schedOUT_addr));// zeroes out struct before data copied

    schedOUT_addr.sin_family = AF_INET; // specifies Address Family

    schedOUT_addr.sin_addr.s_addr = inet_addr(LOCAL_ADDRESS); // Connect to local address

    schedOUT_addr.sin_port = htons(OUTPUT_PORT); // output port 50003

       

Alpha Geek

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Status NEW Posted 18 Aug 2017 09:08 AM My Price 15.00

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file 1503050330-33529_1_636385454975300177_RR.txt preview (263 words )

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