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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 <thread>
#include <signal.h>
/* disable SHA256 checksum */
#define SALTICIDAE_NOCHECKSUM
#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::htole;
using salticidae::letoh;
using salticidae::bytearray_t;
using salticidae::TimerEvent;
using std::placeholders::_1;
using std::placeholders::_2;
using opcode_t = uint8_t;
struct MsgBytes {
static const opcode_t opcode = 0xa;
DataStream serialized;
bytearray_t bytes;
MsgBytes(size_t size) {
bytes.resize(size);
serialized << htole((uint32_t)size) << bytes;
}
MsgBytes(DataStream &&s) {
uint32_t len;
s >> len;
len = letoh(len);
auto base = s.get_data_inplace(len);
bytes = bytearray_t(base, base + len);
}
};
const opcode_t MsgBytes::opcode;
using MsgNetworkByteOp = MsgNetwork<opcode_t>;
struct MyNet: public MsgNetworkByteOp {
const std::string name;
const NetAddr peer;
TimerEvent ev_period_send;
TimerEvent ev_period_stat;
size_t nrecv;
MyNet(const salticidae::EventContext &ec,
const std::string name,
const NetAddr &peer,
double stat_timeout = -1):
MsgNetworkByteOp(ec, MsgNetworkByteOp::Config().burst_size(1000)),
name(name),
peer(peer),
ev_period_stat(ec, [this, stat_timeout](TimerEvent &) {
SALTICIDAE_LOG_INFO("%.2f mps\n", nrecv / (double)stat_timeout);
nrecv = 0;
ev_period_stat.add(stat_timeout);
}),
nrecv(0) {
/* message handler could be a bound method */
reg_handler(salticidae::generic_bind(
&MyNet::on_receive_bytes, this, _1, _2));
if (stat_timeout > 0)
ev_period_stat.add(0);
}
struct Conn: public MsgNetworkByteOp::Conn {
MyNet *get_net() { return static_cast<MyNet *>(get_pool()); }
salticidae::ArcObj<Conn> self() {
return salticidae::static_pointer_cast<Conn>(
MsgNetworkByteOp::Conn::self());
}
void on_setup() override {
auto net = get_net();
if (get_mode() == ACTIVE)
{
printf("[%s] Connected, sending hello.\n",
net->name.c_str());
/* send the first message through this connection */
net->ev_period_send = TimerEvent(net->ec,
[net, conn = self()](TimerEvent &) {
net->send_msg(MsgBytes(256), conn);
net->ev_period_send.add(0);
});
net->ev_period_send.add(0);
}
else
printf("[%s] Passively connected, waiting for greetings.\n",
net->name.c_str());
}
void on_teardown() override {
auto net = get_net();
net->ev_period_send.clear();
printf("[%s] Disconnected, retrying.\n", net->name.c_str());
/* try to reconnect to the same address */
net->connect(get_addr());
}
};
salticidae::ConnPool::Conn *create_conn() override {
return new Conn();
}
void on_receive_bytes(MsgBytes &&msg, const conn_t &conn) {
nrecv++;
}
};
salticidae::EventContext ec;
NetAddr alice_addr("127.0.0.1:1234");
NetAddr bob_addr("127.0.0.1:1235");
void signal_handler(int) {
throw salticidae::SalticidaeError("got terminal signal");
}
int main() {
struct sigaction sa;
sa.sa_handler = signal_handler;
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
/* test two nodes */
MyNet alice(ec, "Alice", bob_addr, 10);
alice.start();
alice.listen(alice_addr);
std::thread bob_thread([]() {
salticidae::EventContext ec;
MyNet bob(ec, "Bob", alice_addr);
bob.start();
bob.connect(alice_addr);
//try {
ec.dispatch();
//} catch (std::exception &) {}
//SALTICIDAE_LOG_INFO("exiting");
});
//try {
ec.dispatch();
//} catch (std::exception &e) {
// pthread_kill(bob_thread.native_handle(), SIGTERM);
// bob_thread.join();
// SALTICIDAE_LOG_INFO("exception: %s", e.what());
//}
return 0;
}
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