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// MessagePack for C++ example
//
// Copyright (C) 2008-2015 FURUHASHI Sadayuki and KONDO Takatoshi
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#include <msgpack.hpp>
#include <iostream>
#include <stdexcept>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#if defined(_MSC_VER) || defined(__MINGW32__)
#include <io.h>
#include <fcntl.h>
#define pipe(fds) _pipe(fds, 4096, _O_BINARY)
#endif // _MSC_VER || __MINGW32__
class Server {
public:
Server(int sock) : m_sock(sock) { }
~Server() { }
typedef msgpack::unique_ptr<msgpack::zone> unique_zone;
void socket_readable()
{
m_pac.reserve_buffer(1024);
ssize_t count =
read(m_sock, m_pac.buffer(), m_pac.buffer_capacity());
if(count <= 0) {
if(count == 0) {
throw std::runtime_error("connection closed");
}
if(errno == EAGAIN || errno == EINTR) {
return;
}
throw std::runtime_error(strerror(errno));
}
m_pac.buffer_consumed(count);
msgpack::object_handle oh;
while (m_pac.next(oh)) {
msgpack::object msg = oh.get();
unique_zone& life = oh.zone();
process_message(msg, life);
}
if(m_pac.message_size() > 10*1024*1024) {
throw std::runtime_error("message is too large");
}
}
private:
void process_message(msgpack::object msg, unique_zone&)
{
std::cout << "message reached: " << msg << std::endl;
}
private:
int m_sock;
msgpack::unpacker m_pac;
};
static void* run_server(void* arg)
{
try {
Server* srv = reinterpret_cast<Server*>(arg);
while(true) {
srv->socket_readable();
}
return NULL;
} catch (std::exception& e) {
std::cerr << "error while processing client packet: "
<< e.what() << std::endl;
return NULL;
} catch (...) {
std::cerr << "error while processing client packet: "
<< "unknown error" << std::endl;
return NULL;
}
}
struct fwriter {
fwriter(int fd) : m_fp( fdopen(fd, "w") ) { }
void write(const char* buf, size_t buflen)
{
size_t count = fwrite(buf, buflen, 1, m_fp);
if(count < 1) {
std::cout << buflen << std::endl;
std::cout << count << std::endl;
throw std::runtime_error(strerror(errno));
}
}
void flush() { fflush(m_fp); }
void close() { fclose(m_fp); }
private:
FILE* m_fp;
};
int main(void)
{
int pair[2];
if (pipe(pair) != 0) return -1;
// run server thread
Server srv(pair[0]);
pthread_t thread;
pthread_create(&thread, NULL,
run_server, reinterpret_cast<void*>(&srv));
// client thread:
fwriter writer(pair[1]);
msgpack::packer<fwriter> pk(writer);
typedef msgpack::type::tuple<std::string, std::string, std::string> put_t;
typedef msgpack::type::tuple<std::string, std::string> get_t;
put_t req1("put", "apple", "red");
put_t req2("put", "lemon", "yellow");
get_t req3("get", "apple");
pk.pack(req1);
pk.pack(req2);
pk.pack(req3);
writer.flush();
writer.close();
pthread_join(thread, NULL);
}
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