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reporter.c
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reporter.c
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#include <string.h>
#include <stdio.h>
#include "stats.h"
#include "reporter.h"
#include <stdlib.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#define NFIELDS 13
Reporter* createReporter(char *address, int port, float bandwidth, int packet_size){
Reporter *r = malloc(sizeof(Reporter));
r->address = address;
r->port = port;
r->bitrate = bandwidth;
r->packet_size = packet_size;
r->nreporters = 0;
r->nresults = 0;
r->rsize = 100;
r->results = calloc(r->rsize, sizeof(float*));
int i = 0;
for (; i < r->rsize; i++) r->results[i] = NULL;
return r;
}
void* listen_for_results(void *args){
Reporter *r = (Reporter *)args;
struct sockaddr_in serv_addr, cli_addr;
socklen_t clilen;
int sockAck;
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("ERROR opening socket, will not receive reports.");
return NULL;
}
/* Initialize socket structure */
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(r->port);
/* Now bind the host address using bind() call.*/
if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
perror("ERROR binding to socket, will not receive reports.");
return NULL;
}
/* Now start listening for the clients, here process will
* go in sleep mode and will wait for the incoming connection
*/
listen(sockfd,10);
clilen = sizeof(cli_addr);
/* Accept actual connection from the client */
pthread_t pthread_id;
listener_thread_data datas[100];
int thread_ind = 0;
while (1) {
sockAck = accept(sockfd, (struct sockaddr *) &cli_addr, &clilen);
if (sockAck < 0) {
perror("ERROR on accept");
return NULL;
}
datas[thread_ind].sock = sockAck;
datas[thread_ind].reporter = r;
pthread_create(&pthread_id, NULL, handle_reporter, (void *)&datas[thread_ind]);
/* Create child process */
} /* end of while */
}
void* handle_reporter(void *arg){
listener_thread_data *data = (listener_thread_data *)arg;
int n = 0;
char buffer[100000];
int size = 100;
int n_tests = 0;
int k = 1;
float **results = calloc(size, sizeof(float *));
int result_ind = 0;
while (k != 0){
k = read(data->sock,buffer + n,10000);
n += k;
}
buffer[n] = '\0';
char *ptk = strtok(buffer, ",\r\n");
while (ptk){
if (result_ind == 0){
if (n_tests == size){
results = realloc(results, sizeof(float *) * size * 2);
size *= 2;
}
results[n_tests] = calloc(NFIELDS + 1, sizeof(float));
}
if (result_ind == 2){
char buff[30];
strcpy(buff, ptk);
buff[strlen(ptk) - 1] = '\0';
results[n_tests][result_ind++] = atof(ptk);
}
else if (result_ind == NFIELDS - 1) {
results[n_tests][result_ind] = atof(ptk);
n_tests++;
result_ind = 0;
}
else {
results[n_tests][result_ind++] = atof(ptk);
}
ptk = strtok(NULL, ",\r\n");
}
Reporter *r = data->reporter;
if (n_tests < 1){
free(results);
return NULL;
}
pthread_mutex_lock(&r->lock);
r->nreporters++;
int ind = 0;
for (n = 0; n < n_tests;n++){
ind = (int)results[n][0];
if (ind >= r->rsize){
float **newresults = calloc(r->rsize * 2, sizeof(float *));
int z = 0;
for (; z < r->rsize; z++){
newresults[z] = r->results[z];
}
free(r->results);
r->results = newresults;
for (z=r->rsize; z < r->rsize * 2; z++) {
r->results[z] = NULL;
}
r->rsize *= 2;
}
if (r->results[ind] == NULL){
r->results[ind] = calloc(NFIELDS + 2, sizeof(float));
r->nresults++;
}
r->results[ind][0] = ind;
r->results[ind][1] = (int)results[n][1];
for (k = 2; k < NFIELDS; k++){
r->results[ind][k] += results[n][k];
}
r->results[ind][NFIELDS] += 1;
}
pthread_mutex_unlock(&r->lock);
return NULL;
}
void reporterListen(Reporter* r){
pthread_create(&r->thread, NULL, listen_for_results, r);
}
void crunchReports(Reporter *r, FILE *out){
if (r->nresults == 0) return;
int i = 0, j = 0;
fprintf(out, "Receivers,Bitrate,Packet Size,%s\n", RESULT_HEADERS);
for (; i < r->rsize; i++){
if (!r->results[i]) continue;
fprintf(out, "%d,%f,%d,%d,%d,",(int)r->results[i][NFIELDS], r->bitrate, r->packet_size, (int)r->results[i][0], (int)r->results[i][1]);
for (j = 2; j < NFIELDS; j++){
r->results[i][j] /= r->results[i][NFIELDS];
fprintf(out, "%f%s", r->results[i][j], (j == NFIELDS - 1) ? "\n" : ",");
}
}
}
int sendall(int s, char *buf, int len)
{
int total = 0; // how many bytes we've sent
int bytesleft = len; // how many we have left to send
int n;
while(total < len) {
n = send(s, buf+total, bytesleft, 0);
if (n == -1) {
break;
}
total += n;
bytesleft -= n;
}
return n==-1?-1:0; // return -1 on failure, 0 on success
}
int reportResults(Reporter *r, McastResult **results, int n_tests, int json){
struct sockaddr_in server;
if (n_tests < 1) return 1;
//Create socket
r->sock = socket(AF_INET , SOCK_STREAM , 0);
if (r->sock == -1)
{
printf("Could not create socket");
}
server.sin_addr.s_addr = inet_addr(r->address);
server.sin_family = AF_INET;
server.sin_port = htons( r->port );
//Connect to remote server
if (connect(r->sock , (struct sockaddr *)&server , sizeof(server)) < 0)
{
perror("connect failed. Error");
return 1;
}
int i = 1,slen;
char *csv = result_to_csv(results[0]);
slen = strlen(csv);
char *message = calloc((n_tests + 3) * (slen + 10), sizeof(char));
memcpy(message, csv, strlen(csv));
message[slen] = '\n';
int n = slen + 1;
free(csv);
for (; i < n_tests;i++){
csv = result_to_csv(results[i]);
slen = strlen(csv);
memcpy(message + n, csv, strlen(csv));
n+=slen;
message[n] = '\n';
n++;
free(csv);
}
message[n] = '\0';
printf("%s\n", message);
if( sendall(r->sock , message , strlen(message)) < 0)
{
free(message);
return 1;
}
free(message);
close(r->sock);
return 0;
}
void freeReporter(Reporter *r){
int i = 0;
for (; i < r->rsize; i++){
if (r->results[i] != NULL){
free(r->results[i]);
}
}
free(r->results);
free(r);
}