void *event_listener_loop(void *arg) {
int sock;
struct sockaddr_in server;
char str_random_port[30];
pthread_t vlc_thread;
Blackadder *ba = (Blackadder *) arg;
/*create a random port*/
int random_port = (rand() % 10000 + 3000);
snprintf(str_random_port, sizeof (str_random_port), "%d", random_port);
pthread_create(&vlc_thread, NULL, vlc_thread_loop, str_random_port);
/*create the UDP loopback sender*/
server.sin_family = AF_INET;
server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_port = htons(random_port);
sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock < 0) {
perror("socket");
}
while (true) {
Event ev;
ba->getEvent(ev);
if (ev.type == PUBLISHED_DATA) {
sendto(sock, ev.data, ev.data_len, 0, (struct sockaddr *) &server, sizeof (server));
} else {
cout << "weird" << endl;
}
}
}
void *event_listener_loop(void *arg) {
Blackadder *ba = (Blackadder *) arg;
while (true) {
Event ev;
ba->getEvent(ev);
if (ev.type == PUBLISHED_DATA) {
//cout << "TM: received a request...processing now" << endl;
handleRequest((char *) ev.data, ev.data_len);
} else {
cout << "TM: I am not expecting any other notification...FATAL" << endl;
}
}
}
void *event_listener_loop(void *arg) {
Blackadder *ba = (Blackadder *) arg;
while (true) {
Event ev = ba->getEvent();
if (ev.type == PUBLISHED_DATA) {
//cout<<"received data of size: "<< ev.data_len << endl;
if (ev.data[0] == 'A') {
if (experiment_started == false) {
experiment_started = true;
gettimeofday(&start_tv, &tz);
printf("START TIME: %ld,%ld \n", start_tv.tv_sec, start_tv.tv_usec);
}
//cout << "received published data for ID " << chararray_to_hex(str_id) << "!! size: " << (total_buf_size - (sizeof (struct nlmsghdr) + sizeof (unsigned char) + sizeof (unsigned char) +str_id.size())) << endl;
counter++;
}
if (ev.data[0] == 'B') {
//printf("Received %d packets\n", counter);
gettimeofday(&end_tv, &tz);
//printf("END TIME: %ld,%ld \n", end_tv.tv_sec, end_tv.tv_usec);
duration.tv_sec = end_tv.tv_sec - start_tv.tv_sec;
if (end_tv.tv_usec - start_tv.tv_usec > 0) {
duration.tv_usec = end_tv.tv_usec - start_tv.tv_usec;
} else {
duration.tv_usec = end_tv.tv_usec + 1000000 - start_tv.tv_usec;
duration.tv_sec--;
}
printf("duration: %ld seconds and %d microseconds\n\n", duration.tv_sec, duration.tv_usec);
float left = counter * ((float) payload_size / (float) (1024 * 1024));
float right = ((float) ((duration.tv_sec * 1000000) + duration.tv_usec)) / 1000000;
cout << "counter: " << counter << endl;
cout << "payload_size: " << payload_size << endl;
//cout << "left: " << left << endl;
//cout << "right: " << right << endl;
float throughput = (left / right);
printf("Throughput: %f MB/sec \n\n", throughput);
break;
}
}
}
}
void *event_listener_loop(void *arg) {
Blackadder *ba = (Blackadder *) arg;
Event ev;
int i;
ba->getEvent(ev);
if (ev.type == START_PUBLISH) {
cout << "start publishing " << endl;
gettimeofday(&start_tv, &tz);
for (i = 0; i < 1000000; i++) {
//cout << "publishing data for ID " << chararray_to_hex(ev.id) << endl;
ba->publish_data(ev.id, DOMAIN_LOCAL, NULL, 0, payload, payload_size);
}
gettimeofday(&end_tv, &tz);
for (int j = 0; j < 1000; j++) {
//cout << "publishing end flag for ID " << chararray_to_hex(ev.id) << endl;
ba->publish_data(ev.id, DOMAIN_LOCAL, NULL, 0, end_payload, payload_size);
}
}
duration.tv_sec = end_tv.tv_sec - start_tv.tv_sec;
if (end_tv.tv_usec - start_tv.tv_usec > 0) {
duration.tv_usec = end_tv.tv_usec - start_tv.tv_usec;
} else {
duration.tv_usec = end_tv.tv_usec + 1000000 - start_tv.tv_usec;
duration.tv_sec--;
}
printf("duration: %ld seconds and %ld microseconds\n\n", duration.tv_sec, duration.tv_usec);
int counter = i;
float left = counter * ((float) payload_size / (float) (1024 * 1024));
float right = ((float) ((duration.tv_sec * 1000000) + duration.tv_usec)) / 1000000;
cout << "counter: " << counter << endl;
cout << "payload_size: " << payload_size << endl;
float throughput = (left / right);
printf("Throughput: %f MB/sec \n", throughput);
float pps = ((float) counter) / right;
printf("%f pps\n\n", pps);
return NULL;
}
void *event_listener_loop(void *arg) {
int bug_counter = 0;
Blackadder *ba = (Blackadder *) arg;
string bin_prefix_id = string();
string hex_id = string();
string bin_backchannel_id = string();
while (true) {
Event ev = ba->getEvent();
hex_id = chararray_to_hex(ev.id);
switch (ev.type) {
case SCOPE_PUBLISHED:
//cout << "SCOPE_PUBLISHED: " << hex_id << endl;
break;
case SCOPE_UNPUBLISHED:
//cout << "SCOPE_UNPUBLISHED: " << hex_id << endl;
break;
case START_PUBLISH:
//cout << "START_PUBLISH: " << hex_id << endl;
bin_backchannel_id = hex_to_chararray(backchannel_id);
if (hex_id.compare("00000000000000002222222222222222" + backchannel_id) == 0) {
char *hello = (char *) malloc(sizeof ("hello"));
memcpy(hello, "hello", sizeof ("hello"));
ba->publish_data(ev.id, DOMAIN_LOCAL, NULL, hello, sizeof ("hello"));
cout << hex_id << " will be used as the backchannel to the publisher" << endl;
}
break;
case STOP_PUBLISH:
cout << "STOP_PUBLISH: " << hex_id << endl;
break;
case PUBLISHED_DATA:
//cout << "PUBLISHED_DATA: " << hex_id << endl;
//cerr<<"lock!!!"<<endl;
if (ev.id.compare(full_info_id) == 0) {
/*start measuring*/
gettimeofday(&start_tv, &tz);
printf("START TIME: %ld,%ld \n", start_tv.tv_sec, start_tv.tv_usec);
/*that's the metadata*/
efs = new ExpectedFragmentSequence();
memcpy(&global_number_of_fragments, ev.data, sizeof (global_number_of_fragments));
/*the bandwidth would be useful to calculate that as well :)*/
retransmission_threshold = global_number_of_fragments / 1;
/*set up the required state for defragmentation*/
efs->number_of_fragments = global_number_of_fragments;
efs->fragments_so_far = 0;
string zero_id = hex_to_chararray("0000000000000000");
efs->expected_fragment = ev.id + zero_id;
efs->first_fragment = ev.id + zero_id;
efs->last_fragment = efs->first_fragment;
calculate_fragment_from_int(efs->last_fragment, global_number_of_fragments);
efs->expected_fragment_offset = 0;
efs->fragments_map = Bitvector(global_number_of_fragments);
efs->time_beat = 10;
/*advertised the item /0000000000000000/ALGID(1111111111111111)/alg(ID,myself)
* (for now, ALGID(1111111111111111)=2222222222222222 and alg(ID,myself)=3333333333333333) to create the back channel to the publisher*/
string prefix_id = "00000000000000003333333333333333";
backchannel_id = string();
create_random_ID(backchannel_id); /*in hex*/
efs->p_to_s_channel = hex_to_chararray(prefix_id + backchannel_id);
bin_prefix_id = hex_to_chararray(prefix_id);
bin_backchannel_id = hex_to_chararray(backchannel_id);
ba->subscribe_info(bin_backchannel_id, bin_prefix_id, DOMAIN_LOCAL, NULL);
prefix_id = "00000000000000002222222222222222";
efs->s_to_p_channel = hex_to_chararray(prefix_id + backchannel_id);
bin_prefix_id = hex_to_chararray(prefix_id);
bin_backchannel_id = hex_to_chararray(backchannel_id);
ba->publish_info(bin_backchannel_id, bin_prefix_id, DOMAIN_LOCAL, NULL);
efs->printEFS();
pthread_create(&timeout_thread, NULL, timeout_handler, (void *) ba);
} else {
pthread_mutex_lock(&global_mutex);
if (efs != NULL) {
efs->time_beat = 10;
if (ev.id.substr(0, 2 * PURSUIT_ID_LEN).compare(full_info_id) == 0) {
//cout << "an in-band transmission: " << chararray_to_hex(ev.id) << endl;
if (ev.id.compare(efs->expected_fragment) == 0) {
//cout << "expected" << chararray_to_hex(ev.id) << endl;
find_next(efs->expected_fragment);
efs->fragments_so_far++;
efs->fragments_map[efs->expected_fragment_offset] = true;
//cout << "setting bit " << (efs->expected_fragment_offset) << endl;
//cout << efs->fragments_map.to_string().c_str() << endl;
efs->expected_fragment_offset++;
if (efs->fragments_so_far == efs->number_of_fragments) {
pthread_cancel(timeout_thread);
delete efs;
efs = NULL;
printResult();
break;
}
} else {
//cout << "NOT expected" << endl;
int distance = calculate_number_of_fragments(efs->expected_fragment, ev.id) - 1; //e.g. from 0 to 1 distance = 1
if (distance == -1) {
cout << chararray_to_hex(ev.id) << " is a duplicate " << endl;
} else if (Bitvector::Bit::unspecified_bool_type(efs->fragments_map[efs->expected_fragment_offset + distance]) != false) {
cout << chararray_to_hex(ev.id) << " is a duplicate! " << endl;
} else {
efs->fragments_so_far++;
efs->fragments_map[efs->expected_fragment_offset + distance] = true;
//cout << "setting bit " << (efs->expected_fragment_offset + distance) << endl;
//cout << efs->fragments_map.to_string().c_str() << endl;
}
if (efs->fragments_so_far == efs->number_of_fragments) {
pthread_cancel(timeout_thread);
delete efs;
efs = NULL;
printResult();
break;
}
}
} else {
string mapped_id = root_scope + info_id + ev.id.substr(ev.id.length() - PURSUIT_ID_LEN, PURSUIT_ID_LEN);
//cout << "a retransmission: " << chararray_to_hex(mapped_id) << endl;
if (mapped_id.compare(efs->expected_fragment) == 0) {
//cout << "expected" << endl;
efs->fragments_so_far++;
efs->fragments_map[efs->expected_fragment_offset] = true;
if (efs->fragments_so_far == efs->number_of_fragments) {
pthread_cancel(timeout_thread);
delete efs;
efs = NULL;
printResult();
break;
}
if (Bitvector::Bit::unspecified_bool_type(efs->fragments_map[efs->expected_fragment_offset + 1]) == false) {
find_next(efs->expected_fragment);
//cout << "setting bit " << (efs->expected_fragment_offset) << endl;
//cout << efs->fragments_map.to_string().c_str() << endl;
efs->expected_fragment_offset++;
} else {
//cout << "the next fragment is already received so I have to move to the new expected" << endl;
//cout << "setting bit " << (efs->expected_fragment_offset) << endl;
//cout << efs->fragments_map.to_string().c_str() << endl;
find_next(efs->expected_fragment);
efs->expected_fragment_offset++;
while ((Bitvector::Bit::unspecified_bool_type(efs->fragments_map[efs->expected_fragment_offset]) != false) && (efs->expected_fragment_offset < efs->fragments_map.size())) {
find_next(efs->expected_fragment);
efs->expected_fragment_offset++;
}
//cout << "now I am expecting " << chararray_to_hex(efs->expected_fragment) << endl;
//cout << "now I am expecting " << efs->expected_fragment_offset << endl;
}
} else {
//cout << "NOT expected" << endl;
int distance = calculate_number_of_fragments(efs->expected_fragment, mapped_id) - 1; //e.g. from 0 to 1 distance = 1
if (distance == -1) {
cout << chararray_to_hex(mapped_id) << " was a duplicate!!" << endl;
} else if (Bitvector::Bit::unspecified_bool_type(efs->fragments_map[efs->expected_fragment_offset + distance]) != false) {
//cout << chararray_to_hex(mapped_id) << " is a duplicate!!! " << endl;
} else {
efs->fragments_so_far++;
efs->fragments_map[efs->expected_fragment_offset + distance] = true;
//cout << "setting bit " << (efs->expected_fragment_offset + distance) << endl;
//cout << efs->fragments_map.to_string().c_str() << endl;
if (efs->fragments_so_far == efs->number_of_fragments) {
pthread_cancel(timeout_thread);
delete efs;
efs = NULL;
printResult();
break;
}
}
}
}
}
pthread_mutex_unlock(&global_mutex);
}
break;
}
}
}
void *timeout_handler(void *arg) {
Blackadder *ba = (Blackadder *) arg;
while (true) {
int retr_thres_counter = 0;
pthread_mutex_lock(&global_mutex);
if (efs == NULL) {
cout << "NO EFS - NULL - NADA" << endl;
break;
}
string temp_id = efs->expected_fragment;
efs->time_beat--;
if (efs->time_beat == 0) {
cout << "timeout" << endl;
/*find all non received fragments and send multiple requests for sequences of fragments*/
int i = efs->expected_fragment_offset;
//cout << "efs->expected_fragment_offset: " << efs->expected_fragment_offset << endl;
while (i < efs->fragments_map.size()) {
int temp_offset = 0;
int required_fragments = 0;
while ((Bitvector::Bit::unspecified_bool_type(efs->fragments_map[i]) == false) && (i < efs->fragments_map.size())) {
required_fragments++;
i++;
temp_offset++;
retr_thres_counter++;
}
pthread_mutex_unlock(&global_mutex);
string test = temp_id;
calculate_fragment_from_int(test, required_fragments);
//cout << "request retransmission " << chararray_to_hex(temp_id) << " to " << chararray_to_hex(test) << " " << required_fragments << endl;
unsigned char IDlen = temp_id.length() / PURSUIT_ID_LEN;
char *retransmission_payload = (char *) malloc(sizeof (IDlen) + temp_id.length() + sizeof (required_fragments) + sizeof (sequence_number));
memcpy(retransmission_payload, &IDlen, sizeof (IDlen));
memcpy(retransmission_payload + sizeof (IDlen), temp_id.c_str(), temp_id.length());
memcpy(retransmission_payload + sizeof (IDlen) + temp_id.length(), &required_fragments, sizeof (required_fragments));
memcpy(retransmission_payload + sizeof (IDlen) + temp_id.length() + sizeof (required_fragments), &sequence_number, sizeof (sequence_number));
ba->publish_data(efs->s_to_p_channel, DOMAIN_LOCAL, NULL, retransmission_payload, sizeof (IDlen) + temp_id.length() + sizeof (required_fragments) + sizeof (sequence_number));
sequence_number++;
free(retransmission_payload);
if (retr_thres_counter > retransmission_threshold) {
//cout << "breaking because of threshold " << retransmission_threshold << endl;
break;
}
calculate_fragment_from_int(temp_id, temp_offset);
find_next(temp_id);
pthread_mutex_lock(&global_mutex);
while ((Bitvector::Bit::unspecified_bool_type(efs->fragments_map[i]) != false) && (i < efs->fragments_map.size())) {
//cout << chararray_to_hex(temp_id) << " is set" << endl;
find_next(temp_id);
i++;
temp_offset++;
}
temp_offset = temp_offset++;
}
efs->time_beat = 10;
} else if (efs->time_beat < 0) {
cout << "that should not happen" << endl;
}
pthread_mutex_unlock(&global_mutex);
usleep(20000);
//cout << "end of timeout!" << endl;
}
}
