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/**
* Copyright (c) 2018 Cornell University.
*
* Author: Ted Yin <[email protected]>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <cstdio>
#include <string>
#include <functional>
#include <openssl/rand.h>
#include "salticidae/msg.h"
#include "salticidae/event.h"
#include "salticidae/network.h"
#include "salticidae/stream.h"
using salticidae::NetAddr;
using salticidae::DataStream;
using salticidae::MsgNetwork;
using salticidae::ConnPool;
using salticidae::Event;
using salticidae::EventContext;
using salticidae::htole;
using salticidae::letoh;
using salticidae::bytearray_t;
using salticidae::uint256_t;
using salticidae::static_pointer_cast;
using salticidae::Config;
using salticidae::ThreadCall;
using std::placeholders::_1;
using std::placeholders::_2;
struct MsgRand {
static const uint8_t opcode = 0x0;
DataStream serialized;
bytearray_t bytes;
MsgRand(size_t size) {
bytearray_t bytes;
bytes.resize(size);
RAND_bytes(&bytes[0], size);
serialized << std::move(bytes);
}
MsgRand(DataStream &&s) { bytes = s; }
};
struct MsgAck {
static const uint8_t opcode = 0x1;
uint256_t hash;
DataStream serialized;
MsgAck(const uint256_t &hash) { serialized << hash; }
MsgAck(DataStream &&s) { s >> hash; }
};
const uint8_t MsgRand::opcode;
const uint8_t MsgAck::opcode;
using MyNet = salticidae::PeerNetwork<uint8_t>;
std::vector<NetAddr> addrs;
void signal_handler(int) {
throw salticidae::SalticidaeError("got termination signal");
}
struct TestContext {
Event timer;
int state;
uint256_t hash;
};
void install_proto(EventContext &ec, MyNet &net,
std::unordered_map<NetAddr, TestContext> &_tc, const size_t &seg_buff_size) {
auto send_rand = [&](int size, const MyNet::conn_t &conn) {
auto &tc = _tc[conn->get_addr()];
MsgRand msg(size);
tc.hash = msg.serialized.get_hash();
net.send_msg(std::move(msg), conn);
};
net.reg_conn_handler([&, send_rand](const ConnPool::conn_t &conn, bool connected) {
if (connected)
{
if (conn->get_mode() == ConnPool::Conn::ACTIVE)
{
auto &tc = _tc[conn->get_addr()];
tc.state = 1;
SALTICIDAE_LOG_INFO("increasing phase");
send_rand(tc.state, static_pointer_cast<MyNet::Conn>(conn));
}
}
});
net.reg_handler([&](MsgRand &&msg, const MyNet::conn_t &conn) {
uint256_t hash = salticidae::get_hash(msg.bytes);
net.send_msg(MsgAck(hash), conn);
});
net.reg_handler([&, send_rand](MsgAck &&msg, const MyNet::conn_t &conn) {
auto &tc = _tc[conn->get_addr()];
if (msg.hash != tc.hash)
{
SALTICIDAE_LOG_ERROR("corrupted I/O!");
exit(1);
}
if (tc.state == seg_buff_size * 2)
{
send_rand(tc.state, conn);
tc.state = -1;
tc.timer = Event(ec, -1, [&net, conn](int, int) {
net.terminate(conn);
});
double t = salticidae::gen_rand_timeout(10);
tc.timer.add_with_timeout(t, 0);
SALTICIDAE_LOG_INFO("rand-bomboard phase, ending in %.2f secs", t);
}
else if (tc.state == -1)
send_rand(rand() % (seg_buff_size * 10), conn);
else
send_rand(++tc.state, conn);
});
}
int main(int argc, char **argv) {
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
Config config;
auto opt_no_msg = Config::OptValFlag::create(false);
auto opt_npeers = Config::OptValInt::create(5);
auto opt_seg_buff_size = Config::OptValInt::create(4096);
auto opt_nworker = Config::OptValInt::create(2);
auto opt_help = Config::OptValFlag::create(false);
config.add_opt("no-msg", opt_no_msg, Config::SWITCH_ON);
config.add_opt("npeers", opt_npeers, Config::SET_VAL);
config.add_opt("seg-buff-size", opt_seg_buff_size, Config::SET_VAL);
config.add_opt("nworker", opt_nworker, Config::SET_VAL);
config.add_opt("help", opt_help, Config::SWITCH_ON, 'h', "show this help info");
config.parse(argc, argv);
if (opt_help->get())
{
config.print_help();
exit(0);
}
size_t seg_buff_size = opt_seg_buff_size->get();
for (int i = 0; i < opt_npeers->get(); i++)
addrs.push_back(NetAddr("127.0.0.1:" + std::to_string(12345 + i)));
std::vector<std::thread> peers;
std::vector<salticidae::BoxObj<ThreadCall>> tcalls;
tcalls.resize(addrs.size());
size_t i = 0;
for (auto &addr: addrs)
{
peers.push_back(std::thread([&, addr, i]() {
EventContext ec;
std::unordered_map<NetAddr, TestContext> tc;
MyNet net(ec, MyNet::Config(
salticidae::ConnPool::Config()
.nworker(opt_nworker->get()).seg_buff_size(seg_buff_size))
.conn_timeout(5).ping_period(2));
tcalls[i] = new ThreadCall(ec);
if (!opt_no_msg->get())
install_proto(ec, net, tc, seg_buff_size);
try {
net.start();
net.listen(addr);
for (auto &paddr: addrs)
if (paddr != addr) net.add_peer(paddr);
ec.dispatch();
} catch (salticidae::SalticidaeError &e) {}
}));
i++;
}
EventContext ec;
auto shutdown = [&](int) {
for (auto &tc: tcalls)
tc->async_call([ec=tc->get_ec()](ThreadCall::Handle &) {
ec.stop();
});
for (auto &t: peers) t.join();
ec.stop();
};
salticidae::SigEvent ev_sigint(ec, shutdown);
salticidae::SigEvent ev_sigterm(ec, shutdown);
ev_sigint.add(SIGINT);
ev_sigterm.add(SIGTERM);
ec.dispatch();
return 0;
}
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