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data.cpp
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data.cpp
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//
// data.cpp
// PacketTraceExplorer
//
// Created by Junxian Huang on 11/18/12.
// Copyright (c) 2012 Junxian Huang. All rights reserved.
//
#include "data.h"
using namespace std;
pcap_dumper_t *dumper;
uint64 packet_count;
uint64 no_ip_count;
uint64 tcp_count;
uint64 udp_count;
uint64 tcp_up_bytes;
uint64 tcp_down_bytes;
uint64 udp_up_bytes;
uint64 udp_down_bytes;
uint64 http_up_bytes;
uint64 http_down_bytes;
uint64 icmp_count;
uint64 ignore_count1;
uint64 ignore_count2;
uint64 flow_count;
att_ether_hdr *peth;
ip *pip;
tcphdr *ptcp;
udphdr *pudp;
bool b1, b2;
bool is_first;
uint64 start_time_sec;
uint64 last_time_sec;
uint64 end_time_sec;
u_int ip1, ip2;
u_int ip_clt, ip_svr;
u_short port_clt, port_svr;
u_short payload_len;
double ts;
double last_prune_time;
double last_sample_time;
double ack_delay;
u_int expected_ack;
u_int *opt_ts;
u_short opt_len;
u_int window_scale;
__gnu_cxx::hash_set<u_int> enb_ip;
__gnu_cxx::hash_set<u_int> core_ip;
__gnu_cxx::hash_map<u_int, u_int> enb_load;
__gnu_cxx::hash_map<u_int, u_int>::iterator itmap;
map<uint64, tcp_flow>::iterator flow_it;
map<uint64, tcp_flow>::iterator flow_it_tmp;
map<uint64, tcp_flow> client_flows;
map<string, pair<double, double> > big_flows;
map<string, pair<double, double> >::iterator big_flow_it_tmp;
map<u_int, user> users;
map<u_int, user>::iterator user_it;
map<u_short, tcp_flow*>::iterator uval_it;
map<u_int, u_int> cip;
map<u_int, u_int> sip;
map<u_int, u_int>::iterator csit;
uint64 flow_index;
string big_flow_index;
bool is_target_flow;
tcp_flow *flow = NULL;
user *userp = NULL;
client_bw *bw_udp = NULL;
client_bw *bw_tcp = NULL;
char *payload;
string payload_str;
size_t start_pos;
size_t end_pos;
u_int jump;
void dispatcher_handler(u_char *c, const struct pcap_pkthdr *header, const u_char *pkt_data) {
//c is not used
packet_count++;
//cout << header->len << " " << header->caplen << " time " << (header->ts.tv_sec) << endl;
//record time
if (is_first) {
is_first = false;
start_time_sec = header->ts.tv_sec;
last_time_sec = start_time_sec;
end_time_sec = start_time_sec;
if (RUNNING_LOCATION == RLOC_CONTROL_SERVER || RUNNING_LOCATION == RLOC_CONTROL_CLIENT) {
TIME_BASE = (double)(header->ts.tv_sec) + (double)header->ts.tv_usec / (double)USEC_PER_SEC;
}
cout << "TIME_BASE " << fixed << TIME_BASE << endl;
} else {
end_time_sec = header->ts.tv_sec;
}
ts = ((double)(header->ts.tv_sec) + (double)header->ts.tv_usec / (double)USEC_PER_SEC) - TIME_BASE;
peth = (att_ether_hdr *)pkt_data;
if (*((u_short *)(pkt_data + ETHER_HDR_LEN - 2)) == ETHERTYPE_IP) {
//all IP
pip = (ip *)(pkt_data + ETHER_HDR_LEN);
b1 = isClient(pip->ip_src);
b2 = isClient(pip->ip_dst);
if ((b1 && !b2) || (!b1 && b2)) { //uplink or downlink
if (b1 && !b2) { // uplink
ip1 = peth->src_ip;
ip2 = peth->dst_ip;
ip_clt = pip->ip_src.s_addr;
ip_svr = pip->ip_dst.s_addr;
} else { //downlink
ip1 = peth->dst_ip;
ip2 = peth->src_ip;
ip_clt = pip->ip_dst.s_addr;
ip_svr = pip->ip_src.s_addr;
}
//enb_ip.insert(ip1);
//core_ip.insert(ip2);
/* //ENB load info
enb_load[ip1]++;
if (end_time_sec - LOAD_SAMPLE_PERIOD >= last_time_sec) {
last_time_sec = end_time_sec;
for (itmap = enb_load.begin() ; itmap != enb_load.end() ; itmap++) {
cout << "ENBLOAD " << ConvertIPToString(itmap->first) << " " <<
end_time_sec << " " << itmap->second << endl;
}
cout << endl;
enb_load.clear();
}//*/
} else if (b1 && b2) { //ignore 1, both are client IP
ignore_count1++;
} else { //ignore 2, none are client IP
ignore_count2++;
}
//init userp
userp = &users[ip_clt];
if (userp->start_time == 0) {
//init
userp->start_time = ts;
}
switch (pip->ip_p) {
case IPPROTO_TCP:
//break; //TODO only look at UDP now
tcp_count++;
ptcp = (tcphdr *)((u_char *)pip + BYTES_PER_32BIT_WORD * pip->ip_hl); //cast of u_char* is necessary
payload_len = bswap16(pip->ip_len) - BYTES_PER_32BIT_WORD * (pip->ip_hl + ptcp->th_off);
opt_len = BYTES_PER_32BIT_WORD * ptcp->th_off - 20;
opt_ts = (u_int *)((u_char *)ptcp + 20);
window_scale = 0;
while (opt_len >= 10) { //Timestamps option at least 10 bytes
if ((*((u_char *)opt_ts)) == 0x08 && (*(((u_char *)opt_ts) + 1)) == 0x0a) {
opt_ts = (u_int *)((u_char *)opt_ts + 2);
opt_len = 100;
break;
} else if ((*((u_char *)opt_ts)) == 0x00 || (*((u_char *)opt_ts)) == 0x01) {
//NOP
opt_ts = (u_int *)((u_char *)opt_ts + 1); //opt_ts + 1 is length field
opt_len--;
} else {
if ((*((u_char *)opt_ts)) == 0x03) {
//window scale option in the SYN packet
window_scale = (1 << (*((u_int *)((u_char *)opt_ts + 2))));
}
jump = (u_int)(*((u_char *)opt_ts + 1));
if (jump > opt_len || jump <= 0) {
//something weird happens
opt_len = 0;
break;
}
opt_len -= jump;
opt_ts = (u_int *)((u_char *)opt_ts + jump); //opt_ts + 1 is length field
}
}
if (RUNNING_LOCATION == RLOC_CONTROL_CLIENT) {
//TCP client side throughput sampling
if (b1 && !b2 && bw_tcp == NULL && (ptcp->th_flags & TH_SYN) != 0) {
bw_tcp = new client_bw(ts, 1.0);
}
//BW estimation ground truth
if (!b1 && b2) { //downlink
//sample throughput here, using differnt time window
bw_tcp->add_packet(payload_len, ts);
}//*/
//G value ground truth
/*if (b1 && !b2) { // uplink
if ((ptcp->th_flags & TH_ACK) != 0) {
opt_ts = (u_int *)((u_char *)ptcp + 24);
if (double_start < 0) {
u_int_start = bswap32(*opt_ts);
double_start = ts;
} else {
cout << "G_GROUNDTRUTH " << (ts - double_start) / (bswap32(*opt_ts) - u_int_start) << endl;
}
}
}//*/
//analyze client trace to understand the delay between data and ack
/*if (b1 && !b2) { // uplink
if (ack_delay >= 0 && expected_ack == bswap32(ptcp->th_ack)) {
cout << "ACK_DELAY " << ts - ack_delay << endl;
ack_delay = -1;
} else if (ack_delay >= 0 && expected_ack < bswap32(ptcp->th_ack)) {
//abandon this sample
ack_delay = -1;
}
} else if (!b1 && b2) { //downlink
if (ack_delay < 0 && payload_len > 0) {
ack_delay = ts;
expected_ack = bswap32(ptcp->th_seq) + payload_len;
}
}*/
} else if (RUNNING_LOCATION == RLOC_ATT_SERVER ||
RUNNING_LOCATION == RLOC_ATT_CLIENT ||
RUNNING_LOCATION == RLOC_CONTROL_SERVER) {
if (b1 && !b2) { // uplink
port_clt = bswap16(ptcp->th_sport);
port_svr = bswap16(ptcp->th_dport);
tcp_up_bytes += payload_len;
if (port_svr == 80 || port_svr == 8080) {
http_up_bytes += payload_len;
}
} else if (!b1 && b2) { //downlink
port_clt = bswap16(ptcp->th_dport);
port_svr = bswap16(ptcp->th_sport);
tcp_down_bytes += payload_len;
if (port_svr == 80 || port_svr == 8080) {
http_down_bytes += payload_len;
}
} else {
break;
}
/*//count CS IPs
cip[ip_clt]++;
sip[ip_svr]++;
break;*/
/*//dump concurrency results
if (ts - last_sample_time > 100.0) {
last_sample_time = ts;
for (user_it = users.begin() ; user_it != users.end() ; user_it++) {
//for each user
int concurrency = 0;
for (uval_it = (*user_it).second.tcp_flows.begin() ; uval_it != (*user_it).second.tcp_flows.end() ; uval_it++) {
if (uval_it->second->last_byte_time > ts - 1.0)
concurrency++;
}
if (concurrency > 0)
printf("CC %.4lf %d\n", ts, concurrency);
}
}//*/
//sequence number ACK number plot
/*bool isUplink = true; //true for ACK, false for SEQ
if (RUNNING_LOCATION == RLOC_CONTROL_SERVER) {
if (b1 && !b2 && isUplink) { // uplink, for ack
cout << ts << " " << packet_count;
cout << " src " << ConvertIPToString(pip->ip_src.s_addr) << " ";
cout << " dst " << ConvertIPToString(pip->ip_dst.s_addr) << " ";
cout << bswap32(ptcp->th_ack) << endl;//
} else if (!b1 && b2 && !isUplink) { //downlink, for seq
cout << ts << " " << packet_count;
cout << " src " << ConvertIPToString(pip->ip_src.s_addr) << " ";
cout << " dst " << ConvertIPToString(pip->ip_dst.s_addr) << " ";
cout << bswap32(ptcp->th_seq) << endl;//
}
}//*/
/*//netflix study, this should be commented out for all other analysis
//check whether current packet has TCP payload
if (ETHER_HDR_LEN + BYTES_PER_32BIT_WORD * (pip->ip_hl + ptcp->th_off) < header->caplen)
payload = (char *)((char *)ptcp + BYTES_PER_32BIT_WORD * ptcp->th_off);
else
payload = (char *)"";
payload_str = string(payload);
big_flow_index = ConvertIPToString(ip_clt) + string("_");
big_flow_index += ConvertIPToString(ip_svr) + string("_");
big_flow_index += NumberToString(port_clt) + string("_") + NumberToString(port_svr);
if ((payload_str.find("GET ") == 0 || payload_str.find("HEAD ") == 0 ||
payload_str.find("POST ") == 0 || payload_str.find("PUT ") == 0 ||
payload_str.find("DELETE ") == 0 || payload_str.find("TRACE ") == 0 ||
payload_str.find("OPTIONS ") == 0 || payload_str.find("CONNECT ") == 0 ||
payload_str.find("PATCH ") == 0) && (b1 && !b2)) {
//uplink HTTP request
//output existing HTTP info
if (big_flows[big_flow_index].first >= 0 && big_flows[big_flow_index].second > 0) {
cout << big_flows[big_flow_index].first << " " << big_flows[big_flow_index].second;
cout << " src " << ConvertIPToString(pip->ip_src.s_addr) << " ";
cout << " dst " << ConvertIPToString(pip->ip_dst.s_addr) << " ";
cout << port_clt << endl;
}
big_flows[big_flow_index] = make_pair(ts, 0);
//} else if (payload_str.find("HTTP/1.") == 0 && (!b1 && b2)) {
//downlink HTTP response
// size_t start_pos = payload_str.find("Content-Length: ");
// size_t end_pos = payload_str.find("\r\n", start_pos);
// int content_len = 0;
// if (start_pos != string::npos && end_pos > start_pos + 16)
// content_len = StringToNumber<int>(payload_str.substr(start_pos + 16, end_pos - start_pos - 16));
} else if (payload_len > 0 && (!b1 && b2)) {
big_flows[big_flow_index].second = ts;
} else if ((ptcp->th_flags & TH_FIN) != 0 || (ptcp->th_flags & TH_RST) != 0) {
//output existing HTTP info
if (big_flows[big_flow_index].first >= 0 && big_flows[big_flow_index].second > 0) {
cout << big_flows[big_flow_index].first << " " << big_flows[big_flow_index].second;
cout << " src " << ConvertIPToString(pip->ip_src.s_addr) << " ";
cout << " dst " << ConvertIPToString(pip->ip_dst.s_addr) << " ";
cout << port_clt << endl;
}
big_flows[big_flow_index] = make_pair(-1, 0);
}
//use UDP flow to calculate aggregate throughput
if (!b1 && b2) { //downlink
//sample throughput here, using differnt time window
if (bw_udp == NULL) {
bw_udp = new client_bw(ts, 0.1);
}
bw_udp->add_packet(payload_len, ts);
}//
break;//*/
//dump interested flow
/*if (//big_flow_index.compare("10.134.12.177_96.17.164.36_1556_1935") == 0 ||
//big_flow_index.compare("10.34.229.236_90.84.51.8_40214_80") == 0 ||
//big_flow_index.compare("10.8.102.148_107.14.33.153_2463_80") == 0 ||
//big_flow_index.compare("10.9.63.12_68.142.123.131_1216_80") == 0 ||
//big_flow_index.compare("10.9.63.12_8.254.15.254_1504_80") == 0) {
big_flow_index.compare("10.46.6.151_74.125.227.65_54587_80") == 0 //Youtube traffic, reusing flow
//1231 180724 1350088578.551052 10.46.6.151 54587 74.125.227.65 80 Host: 3.bp.blogspot.com User-Agent: Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A403 Safari/8536.25 Referer: http://jenniferstano.blogspot.com/search?updated-max=2012-08-07T15:28:00-07:00&max-results=20&start=3&by-date=false Http Len: 22746
||
big_flow_index.compare("10.9.131.253_74.125.215.179_51071_80") == 0 //iPad, AppleCoreMedia
//12601 1219331 1350876729.943984 10.9.131.253 51071 74.125.215.179 80 Host: r4---sn-a5m7zu7d.c.youtube.com User-Agent: AppleCoreMedia/1.0.0.9B206 (iPad; U; CPU OS 5_1_1 like Mac OS X; en_us) NULL Http Len: 22747
) {
pcap_dump((u_char *)dumper, header, pkt_data);
pcap_dump_flush(dumper);
}//*/
//flow statistics analysis
flow_index = port_clt * (((uint64)1) << 32) + ip_clt;
flow_it_tmp = client_flows.find(flow_index);
if (flow_it_tmp != client_flows.end()) {
//found flow
} else if (flow_it_tmp == client_flows.end() && (ptcp->th_flags & TH_SYN) != 0 && (b1 && !b2)) {
//no flow found, now uplink SYN packet
/*//big flow analysis
big_flow_index = ConvertIPToString(ip_clt) + string("_");
big_flow_index += ConvertIPToString(ip_svr) + string("_");
big_flow_index += NumberToString(port_clt) + string("_");
big_flow_index += NumberToString(port_svr);
big_flow_it_tmp = big_flows.find(big_flow_index);
is_target_flow = false;
if (big_flow_it_tmp != big_flows.end()) {
//found big flow
if (ts >= big_flows[big_flow_index].first && ts <= big_flows[big_flow_index].first + big_flows[big_flow_index].second) {
//target flow found
is_target_flow = true;
}
}
if (!is_target_flow) {
break;
}
//*/
client_flows[flow_index].clt_ip = ip_clt; //init a flow
flow_count++;
flow = &client_flows[flow_index];
userp->tcp_flows[port_clt] = flow;
flow->idle_time_before_syn = ts - userp->last_packet_time;
flow->svr_ip = ip_svr;
flow->clt_port = port_clt;
flow->svr_port = port_svr;
flow->start_time = ts;
flow->end_time = ts;
if (RUNNING_LOCATION == RLOC_ATT_SERVER) {
if (client_flows.size() >= 100000 && ts - last_prune_time >= FLOW_MAX_IDLE_TIME / 2) {
//if (ts - last_prune_time >= FLOW_MAX_IDLE_TIME) {
cout << "Flowsize " << ts << " " << client_flows.size() << endl;
last_prune_time = ts; //only prune once for every 100 seconds
for (flow_it = client_flows.begin() ; flow_it != client_flows.end() ; ) {
flow_it_tmp = flow_it;
flow_it++;
if (flow_it_tmp->second.end_time < ts - FLOW_MAX_IDLE_TIME) {
//delete a flow
flow_it_tmp->second.print(-1 * ptcp->th_flags);
users[flow_it_tmp->second.clt_ip].tcp_flows.erase(flow_it_tmp->second.clt_port);
client_flows.erase(flow_it_tmp);
}
}//*/
}
}//*/
} else {
//no flow found and not link SYN packet
//could be ACKs after RST/FIN packets
//could be packets for long lived TCP flow
//just ignore
break;
}
flow = &client_flows[flow_index];
flow->end_time = ts;
flow->packet_count++; //should be before the SYN-RTT analysis
//if a terminate flow packet is here, terminate flow and output flow statistics
if ((ptcp->th_flags & TH_FIN) != 0 || (ptcp->th_flags & TH_RST) != 0) {
flow->print((ptcp->th_flags & TH_FIN) | (ptcp->th_flags & TH_RST));
//delete this flow
userp->tcp_flows.erase(port_clt);
client_flows.erase(flow_index);
break;
} else { // all packets of this flow goes to here except for the FIN and RST packets
if (b1 && !b2) { // uplink
if (payload_len > 0) {
flow->total_up_payloads += payload_len;
}
if (opt_len == 100) {
//there is TCP timestamp options
flow->has_ts_option_clt = true;
if (flow->packet_count == 1 && (ptcp->th_flags & TH_SYN) != 0) {
//SYN
flow->promotion_delay = -1 * bswap32(*opt_ts);
flow->window_scale = window_scale;
} else if (flow->packet_count == 3 && (ptcp->th_flags & TH_SYN) == 0 && flow->promotion_delay < 0) {
//this is not a repeated SYN
//ACK 3
flow->promotion_delay += bswap32(*opt_ts);
flow->window_initial_size = flow->window_scale * bswap16(ptcp->th_win);
}
}
} else if (!b1 && b2) { //downlink
if (payload_len > 0) {
flow->total_down_payloads += payload_len;
flow->last_byte_time = ts;
if (flow->first_byte_time == 0) {
flow->first_byte_time = ts;
}
}
if (opt_len == 100) //there is TCP timestamp options
flow->has_ts_option_svr = true;
}
}
//RTT and TCP pattern analysis
if (ip_clt == flow->clt_ip &&
ip_svr == flow->svr_ip &&
port_clt == flow->clt_port &&
port_svr == flow->svr_port) {
if (b1 && !b2) { // uplink
flow->window_size = flow->window_scale * bswap16(ptcp->th_win); //only update receiver's window
flow->update_ack_x(bswap32(ptcp->th_ack), payload_len, ts);
} else if (!b1 && b2) { //downlink
flow->update_seq_x(bswap32(ptcp->th_seq), payload_len, ts);
}
//cout << "EMPTY_WINDOW " << ts << " " << flow->window_size - flow->bytes_in_fly << endl;
//sample bytes_in_fly
//if ((SAMPLES++) % SAMPLE_CYCLE == 0)
// cout << "BF " << flow->bytes_in_fly << endl;
}//*/
//HTTP analysis
/*if (ETHER_HDR_LEN + BYTES_PER_32BIT_WORD * (pip->ip_hl + ptcp->th_off) < header->caplen) {
//has TCP payload
payload = (char *)((char *)ptcp + BYTES_PER_32BIT_WORD * ptcp->th_off);
payload_str = string(payload);
if (b1 && !b2) {
//UPLINK
if (payload_str.find("GET ") == 0 || payload_str.find("HEAD ") == 0 ||
payload_str.find("POST ") == 0 || payload_str.find("PUT ") == 0 ||
payload_str.find("DELETE ") == 0 || payload_str.find("TRACE ") == 0 ||
payload_str.find("OPTIONS ") == 0 || payload_str.find("CONNECT ") == 0 ||
payload_str.find("PATCH ") == 0) {
//uplink HTTP request
flow->http_request_count++;
if (flow->user_agent.length() == 0) {
//only record the first user agent
start_pos = payload_str.find("User-Agent: ");
end_pos = payload_str.find("\r\n", start_pos);
if (start_pos != string::npos && end_pos > start_pos + 12)
flow->user_agent = compress_user_agent(payload_str.substr(start_pos + 12, end_pos - start_pos - 12));
}
if (flow->host.length() == 0) {
//only record the first user agent
start_pos = payload_str.find("Host: ");
end_pos = payload_str.find("\r\n", start_pos);
if (start_pos != string::npos && end_pos > start_pos + 6)
flow->host = payload_str.substr(start_pos + 6, end_pos - start_pos - 6);
}
}
} else if (!b1 && b2) {
//DOWNLINK
if (payload_str.find("HTTP/1.1 200 OK") == 0 || payload_str.find("HTTP/1.0 200 OK") == 0) {
//downlink HTTP 200 OK
if (flow->content_type.length() == 0) {
//only record the first content type
start_pos = payload_str.find("Content-Type: ");
end_pos = payload_str.find("\r\n", start_pos);
if (start_pos != string::npos && end_pos > start_pos + 14)
flow->content_type = process_content_type(payload_str.substr(start_pos + 14, end_pos - start_pos - 14));
}
start_pos = payload_str.find("Content-Length: ");
end_pos = payload_str.find("\r\n", start_pos);
if (start_pos != string::npos && end_pos > start_pos + 16)
flow->total_content_length += StringToNumber<int>(payload_str.substr(start_pos + 16, end_pos - start_pos - 16));
//} else if (payload_str.find("HTTP/") == 0 && payload_str.find("200 OK") != -1) {
// cout << "HTTP_RESPONSE_SPECIAL " << payload_str << endl;
}
}
}//*/
//BWE analysis, the first part can be used for G inference only
if (flow->gval < 0) {
//do G inference for BW estimate
if (b1 && !b2) { // uplink
if ((ptcp->th_flags & TH_ACK) != 0) {
if (opt_len == 100) {
if (flow->double_start < 0) {
flow->u_int_start = bswap32(*opt_ts);
flow->double_start = ts;
//cout << "TCP header length of the first uplink ACK " << BYTES_PER_32BIT_WORD * ptcp->th_off << endl;
} else if (flow->double_start > 0 && ts - flow->double_start > GVAL_TIME) {
flow->gval = (ts - flow->double_start) / (bswap32(*opt_ts) - flow->u_int_start);
//cout << "G_INFER " << " t_off " << (ts - flow->double_start) << " G: " << flow->gval << " s/tick" << endl;
}
}
}
}
}/* else {
//do BW estimation
if (ip_clt == flow->clt_ip && ip_svr == flow->svr_ip &&
port_clt == flow->clt_port && port_svr == flow->svr_port) {
if (b1 && !b2) { // uplink
if ((ptcp->th_flags & TH_ACK) != 0) {
flow->update_ack(bswap32(ptcp->th_ack), payload_len, flow->gval * bswap32(*opt_ts), ts);
}
} else if (!b1 && b2) { //downlink
//payload_len > < 0 check inside update_seq
flow->update_seq(bswap32(ptcp->th_seq), payload_len, ts);
}
}
}//*/
/*//G inference
if (RUNNING_LOCATION == RLOC_CONTROL_SERVER) {
if (b1 && !b2) { // uplink
if ((ptcp->th_flags & TH_ACK) != 0) {
if (flow->double_start < 0 && ts > 100) {
flow->u_int_start = bswap32(*opt_ts);
flow->double_start = ts;
} else if (flow->double_start > 0) {
flow->gval = (ts - flow->double_start) / (bswap32(*opt_ts) - flow->u_int_start);
if (packet_count % 3 == 0)
cout << "G_INFERENCE " << (ts - flow->double_start) << " " << flow->gval << endl;
}
}
}
}//*/
/*if (packet_count == 38084) {
cout << "create flow here" << endl;
flow = new tcp_flow(ip_svr, ip_clt, port_svr, port_clt);
}
if (packet_count >= 38084) {
//flow is not null
if (ip_clt == flow->clt_ip &&
ip_svr == flow->svr_ip &&
port_clt == flow->clt_port &&
port_svr == flow->svr_port) {
if (b1 && !b2) { // uplink
//cout << "target uplink packet " << packet_count << endl;
//target flow, ack packets
if (bswap32(ptcp->th_ack) > 0) {
flow->update_ack(bswap32(ptcp->th_ack), ts);
}
} else if (!b1 && b2) { //downlink
//cout << "target downlink packet " << packet_count << endl;
//target flow
if (payload_len >= TCP_MAX_PAYLOAD) {
flow->update_seq(bswap32(ptcp->th_seq), payload_len, ts);
}
}
}
}//*/
}
break;
case IPPROTO_UDP:
udp_count++;
pudp = (udphdr *)((u_char *)pip + sizeof(ip));
payload_len = bswap16(pudp->uh_ulen) - UDP_HDR_LEN;
if (b1 && !b2) { // uplink
ip_clt = pip->ip_src.s_addr;
ip_svr = pip->ip_dst.s_addr;
udp_up_bytes += payload_len;
} else if (!b1 && b2) { //downlink
ip_clt = pip->ip_dst.s_addr;
ip_svr = pip->ip_src.s_addr;
udp_down_bytes += payload_len;
} else {
break;
}
/*//count CS IPs
cip[ip_clt]++;
sip[ip_svr]++;*/
if (RUNNING_LOCATION == RLOC_CONTROL_CLIENT) {
//UDP client side throughput sampling
if (!b1 && b2) { //downlink
//sample throughput here, using differnt time window
if (bw_udp == NULL) {
bw_udp = new client_bw(ts, 0.5);
}
bw_udp->add_packet(payload_len, ts);
}
}
/*//DNS analysis
if (b1 && !b2) { // uplink
ip_clt = pip->ip_src.s_addr;
ip_svr = pip->ip_dst.s_addr;
port_clt = bswap16(pudp->uh_sport);
port_svr = bswap16(pudp->uh_dport);
} else if (!b1 && b2) { //downlink
ip_clt = pip->ip_dst.s_addr;
ip_svr = pip->ip_src.s_addr;
port_clt = bswap16(pudp->uh_dport);
port_svr = bswap16(pudp->uh_sport);
} else {
break;
}
if (port_svr == 53) {
//UDP flow statistics analysis
flow_index = port_clt * (((uint64)1) << 32) + ip_clt;
flow_it_tmp = client_flows.find(flow_index);
if (flow_it_tmp != client_flows.end()) {
//found flow
} else if (flow_it_tmp == client_flows.end() && (b1 && !b2)) {
client_flows[flow_index].clt_ip = ip_clt;
flow_count++;
flow = &client_flows[flow_index];
flow->svr_ip = ip_svr;
flow->clt_port = port_clt;
flow->svr_port = port_svr;
flow->start_time = ts;
flow->end_time = ts;
if (RUNNING_LOCATION == RLOC_ATT_SERVER) {
if (client_flows.size() >= 100000 && ts - last_prune_time >= FLOW_MAX_IDLE_TIME / 2) {
//if (ts - last_prune_time >= FLOW_MAX_IDLE_TIME) {
cout << "Flowsize " << ts << " " << client_flows.size() << endl;
last_prune_time = ts; //only prune once for every 100 seconds
for (flow_it = client_flows.begin() ; flow_it != client_flows.end() ; ) {
flow_it_tmp = flow_it;
flow_it++;
if (flow_it_tmp->second.end_time < ts - FLOW_MAX_IDLE_TIME)
client_flows.erase(flow_it_tmp);
}//
}
}//
} else {
break;
}
flow = &client_flows[flow_index];
if (b1 && !b2) { // uplink
flow->end_time = ts;
} else if (!b1 && b2) { //downlink
cout << "D " << ConvertIPToString(flow->svr_ip) << " " << (ts - flow->end_time) << endl;
client_flows.erase(flow_index);
}
}//*/
//cout << "UDP src port " << bswap16(pudp->uh_sport) << " dst port " << bswap16(pudp->uh_dport) << endl;
break;
case IPPROTO_ICMP:
icmp_count++;
break;
default:
break;
}
//everything is in IP
if (userp->last_packet_time > 0 && ts > userp->last_packet_time + 1.0) {
//printf("UI %.4lf\n", ts - userp->last_packet_time);
}
userp->last_packet_time = ts;
} else {
no_ip_count++;
//cout << "Packet " << packet_count << " not IP " << peth->ether_type << endl;
}
//if (packet_count > 1000)
// exit(0);
}
//called for each trace file, should not reset persistent variables across different traces here
int init_global() {
is_first = true;
start_time_sec = 0;
last_time_sec = 0;
end_time_sec = 0;
packet_count = 0;
no_ip_count = 0;
tcp_count = 0;
udp_count = 0;
icmp_count = 0;
ignore_count1 = 0;
ignore_count2 = 0;
flow_count = 0;
tcp_up_bytes = 0;
tcp_down_bytes = 0;
udp_up_bytes = 0;
udp_down_bytes = 0;
http_up_bytes = 0;
http_down_bytes = 0;
ack_delay = -1;
enb_ip.clear();
core_ip.clear();
enb_load.clear();
client_flows.clear();
last_prune_time = 0;
last_sample_time = 0;
cip.clear();
sip.clear();
big_flow_index = "default";
big_flows.clear();
/*if (RUNNING_LOCATION == RLOC_ATT_SERVER || RUNNING_LOCATION == RLOC_ATT_CLIENT) {
//readin big flow data
const char *big_flow_path;
if (RUNNING_LOCATION == RLOC_ATT_SERVER) {
big_flow_path = "/q/gp13/dpi/tcprx/work/data/flow_target.data";
} else if (RUNNING_LOCATION == RLOC_ATT_CLIENT) {
big_flow_path = "/Users/hjx/Documents/4G/figures/traffic/data/flow_target.data";
}
string key;
double start, duration;
ifstream ifs(big_flow_path);
while (ifs >> key >> start >> duration) {
big_flows[key] = make_pair(start, duration);
//big_flows[key] = pair<double, double>(start, duration); //the same
}
}//*/
cout << "BIG_FLOWS size " << big_flows.size() << endl;
//dump interest.pcap
pcap_t *px = pcap_open_dead(DLT_EN10MB, 64);
dumper = pcap_dump_open(px, "interest.pcap");
SAMPLES = 0;
}
int read_pcap_trace(const char * filename) {
char errbuf[PCAP_ERRBUF_SIZE];
pcap_t *fp;
/* Open the capture file */
if ((fp = pcap_open_offline(filename, errbuf)) == NULL) {
fprintf(stderr,"Unable to open the file %s\n", filename);
return 0;
}
if (pcap_datalink(fp) == DLT_LINUX_SLL) {
ETHER_HDR_LEN = 16;
} else {
ETHER_HDR_LEN = 14;
}
/* read and dispatch packets until EOF is reached */
pcap_loop(fp, 0, dispatcher_handler, NULL);
pcap_close(fp);
/*__gnu_cxx::hash_set<u_int>::iterator it;
for (it = enb_ip.begin() ; it != enb_ip.end() ; it++)
cout << "ENB " << ConvertIPToString(*it) << endl;
for (it = core_ip.begin() ; it != core_ip.end() ; it++)
cout << "CORE " << ConvertIPToString(*it) << endl;//*/
/*//count CS IPs
cout << "CIPCount " << cip.size() << " " << filename << endl;
cout << "SIPCount " << sip.size() << " " << filename << endl;
if (strcmp(filename, "/q/gp13/dpi/tcprx/work/raw/t1012.2781.pcap.hdr.pcap") == 0) {
for (csit = cip.begin() ; csit != cip.end() ; csit++)
cout << "CIP " << ConvertIPToString((*csit).first) << " " << (*csit).second << endl;
for (csit = sip.begin() ; csit != sip.end() ; csit++)
cout << "SIP " << ConvertIPToString((*csit).first) << " " << (*csit).second << endl;
}//*/
cout << "PacketCount " << packet_count << endl;
cout << "NoIpCount " << no_ip_count << endl;
cout << "TcpCount " << tcp_count << endl;
cout << "UdpCount " << udp_count << endl;
cout << "IcmpCount " << icmp_count << endl;
cout << "IgnoreCount1 " << ignore_count1 << endl;
cout << "IgnoreCount2 " << ignore_count2 << endl;
cout << "FlowCount " << flow_count << endl; // count of all flows, some may not closed at all
cout << "tcp_up_bytes " << tcp_up_bytes << endl;
cout << "tcp_down_bytes " << tcp_down_bytes << endl;
cout << "udp_up_bytes " << udp_up_bytes << endl;
cout << "udp_down_bytes " << udp_down_bytes << endl;
cout << "http_up_bytes " << http_up_bytes << endl;
cout << "http_down_bytes " << http_down_bytes << endl;
cout << "StartTime " << start_time_sec << endl;
cout << "EndTime " << end_time_sec << endl;
cout << "Duration " << end_time_sec - start_time_sec << endl;
return 1;
}