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- #include <iostream>
- #include <fstream>
- #include <sstream>
- #include <string>
- #include <cstring>
- #include <cstdlib>
- #include <vector>
- #include <chrono>
- #include <thread>
- #include "networking.hpp"
- using namespace std;
- chrono::seconds oneSecond(1);
- int clients_websocket_data_handler(
- struct mg_connection *conn,
- int bits,
- char *data,
- size_t data_len,
- void *user_data)
- {
- if ((bits & 0xf) == MG_WEBSOCKET_OPCODE_CONNECTION_CLOSE)
- return false;
- if ((bits & 0xf) == MG_WEBSOCKET_OPCODE_BINARY)
- {
- struct synchronization_tool *synch = (struct synchronization_tool *) user_data;
- unique_lock<mutex> lck(synch->mtx);
- synch->val = atoi(data);
- return false;
- }
- if ((bits & 0xf) == MG_WEBSOCKET_OPCODE_DATACOMPLETE)
- return false;
- std::cerr << "Unknown response when trying to get update lock." << std::endl;
- return false;
- }
- int start_remote_actor(string target, bool server, string output)
- {
- stringstream buffer;
- string command;
- buffer << "ssh tmgurtle@" << target << " \"screen \'~/prsona/prsona/bin/"
- << (server ? "startServer.sh " : "startClient.sh ") << output << "\'\"" ;
- command = buffer.str();
- return system(command.c_str());
- }
- void wait_for_servers_ready(string dealer)
- {
- bool flag = false;
- while (!flag)
- {
- this_thread::sleep_for(oneSecond);
- stringstream sysString;
- string data;
- char buffer[255];
- struct mg_connection *conn =
- mg_connect_client(
- dealer.c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- if (!conn)
- continue;
- sysString << "GET " << EPOCH_READY_URI << " HTTP/1.1\r\n";
- sysString << "Host: " << dealer << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- size_t readLen = mg_read(conn, (uint8_t*) buffer, 254);
- buffer[readLen] = 0;
- if (strstr(buffer, "200"))
- flag = true;
- mg_close_connection(conn);
- }
- }
- void wait_for_clients_ready(string dealer, size_t numClients)
- {
- struct synchronization_tool numClientsSync;
- bool flag = false;
- while (!flag)
- {
- this_thread::sleep_for(oneSecond);
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_websocket_client(
- dealer.c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0,
- NUM_CLIENTS_URI,
- "null",
- clients_websocket_data_handler,
- synchro_websocket_close_handler,
- &numClientsSync);
- if (!conn)
- continue;
- unique_lock<mutex> lck(numClientsSync.mtx);
- numClientsSync.val = 0;
- numClientsSync.val2 = 1;
- mg_websocket_client_write(
- conn,
- MG_WEBSOCKET_OPCODE_DATACOMPLETE,
- "",
- 0);
- while (numClientsSync.val2)
- numClientsSync.cv.wait(lck);
- mg_close_connection(conn);
- if (numClientsSync.val == numClients)
- flag = true;
- }
- }
- void trigger_epoch(string dealer)
- {
- this_thread::sleep_for(oneSecond);
- bool flag = false;
- while (!flag)
- {
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_client(
- dealer.c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- if (!conn)
- continue;
- sysString << "GET " << TRIGGER_EPOCH_URI << " HTTP/1.1\r\n";
- sysString << "Host: " << dealer << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- mg_close_connection(conn);
- flag = true;
- }
- wait_for_servers_ready(dealer);
- }
- void trigger_vote(string target)
- {
- bool flag = false;
- while (!flag)
- {
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_client(
- target.c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- if (!conn)
- continue;
- sysString << "GET " << TRIGGER_VOTE_URI << " HTTP/1.1\r\n";
- sysString << "Host: " << target << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- mg_close_connection(conn);
- flag = true;
- }
- }
- void trigger_reputation_proof(string target, string verifier)
- {
- bool flag = false;
- while (!flag)
- {
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_client(
- target.c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- if (!conn)
- continue;
- sysString << "GET " << TRIGGER_REP_URI << verifier << " HTTP/1.1\r\n";
- sysString << "Host: " << target << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- mg_close_connection(conn);
- flag = true;
- }
- }
- void execute_experiment(string dealer)
- {
- size_t line = 1;
- char buffer[128];
- ifstream commands("commands.cfg");
- while (!commands.eof())
- {
- commands.getline(buffer, 128);
- if (strlen(buffer) == 0)
- {
- line++;
- continue;
- }
- cout << "Command " << line << ": " << string(buffer) << endl;
- switch(buffer[0])
- {
- case 'V':
- trigger_vote(string(buffer + 2));
- break;
- case 'R':
- char *target, *verifier;
- target = strtok(buffer, " ");
- verifier = strtok(NULL, " ");
- trigger_reputation_proof(string(target), string(verifier));
- break;
- case 'E':
- trigger_epoch(dealer);
- break;
- default:
- break;
- }
- line++;
- }
- }
- int main(int argc, char* argv[])
- {
- string experimentOutput = random_string(8);
- #if USE_SSL
- mg_init_library(0);
- #else
- mg_init_library(MG_FEATURES_SSL);
- #endif
- vector<string> serverIPs, clientIPs;
- string dealerIP;
- char buffer[40];
- ifstream serverConfig("serverIPs.cfg");
- while (!serverConfig.eof())
- {
- serverConfig.getline(buffer, 40);
- if (strlen(buffer) > 0)
- serverIPs.push_back(string(buffer));
- }
- ifstream clientConfig("clientIPs.cfg");
- while (!clientConfig.eof())
- {
- clientConfig.getline(buffer, 40);
- if (strlen(buffer) > 0)
- clientIPs.push_back(string(buffer));
- }
- ifstream dealerConfig("dealerIP.cfg");
- while (!dealerConfig.eof())
- {
- dealerConfig.getline(buffer, 40);
- if (strlen(buffer) > 0)
- dealerIP = buffer;
- }
- size_t numServers = serverIPs.size();
- size_t numClients = clientIPs.size();
- cout << "This experiment is running with output code: " << experimentOutput << endl;
- cout << "Starting BGN dealer server." << endl;
- vector<thread> serverStartup, clientStartup;
- serverStartup.push_back(thread(start_remote_actor, dealerIP, true, experimentOutput));
- this_thread::sleep_for(oneSecond);
- cout << "Starting other servers." << endl;
- for (size_t i = 0; i < numServers; i++)
- {
- if (serverIPs[i] == dealerIP)
- continue;
- serverStartup.push_back(thread(start_remote_actor, serverIPs[i], true, experimentOutput));
- }
- cout << "Waiting for confirmation that servers are ready to continue." << endl;
- for (size_t i = 0; i < numServers; i++)
- serverStartup[i].join();
- wait_for_servers_ready(dealerIP);
- cout << "Starting clients." << endl;
- for (size_t i = 0; i < numClients; i++)
- clientStartup.push_back(thread(start_remote_actor, clientIPs[i], false, experimentOutput));
- cout << "Waiting for confirmation that servers have all clients logged." << endl;
- for (size_t i = 0; i < numClients; i++)
- clientStartup[i].join();
- wait_for_clients_ready(dealerIP, numClients);
- cout << "Beginning experiment." << endl;
- execute_experiment(dealerIP);
- cout << "Finishing experiment." << endl;
- cout << "Sending shutdown commands to clients." << endl;
- for (size_t i = 0; i < clientIPs.size(); i++)
- {
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_client(
- clientIPs[i].c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- sysString << "GET " << EXIT_URI << " HTTP/1.1\r\n";
- sysString << "Host: " << clientIPs[i] << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- mg_close_connection(conn);
- }
- cout << "Sending shutdown commands to servers." << endl;
- for (size_t i = 0; i < serverIPs.size(); i++)
- {
- stringstream sysString;
- string data;
- struct mg_connection *conn =
- mg_connect_client(
- serverIPs[i].c_str(),
- PRSONA_PORT,
- USE_SSL,
- NULL,
- 0);
- sysString << "GET " << EXIT_URI << " HTTP/1.1\r\n";
- sysString << "Host: " << serverIPs[i] << "\r\n\r\n";
- data = sysString.str();
- mg_write(conn, data.c_str(), data.length());
- mg_close_connection(conn);
- }
- return 0;
- }
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