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websocket_app.cpp
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websocket_app.cpp
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/**
* @file websocket_app.cpp
* @author gaowanlu
* @brief websocket app
* @version 0.1
* @date 2024-04-27
*
* @copyright Copyright (c) 2024
*
*/
#include "app/websocket_app.h"
#include "server/server.h"
#include "workers/worker.h"
#include <avant-log/logger.h>
#include "proto/proto_util.h"
#include "utility/singleton.h"
#include "app/lua_plugin.h"
using namespace avant::app;
void websocket_app::on_main_init(avant::server::server &server_obj)
{
LOG_ERROR("websocket_app::on_main_init");
utility::singleton<lua_plugin>::instance()->on_main_init(server_obj.get_lua_dir(), server_obj.get_worker_cnt());
}
void websocket_app::on_worker_init(avant::workers::worker &worker_obj)
{
LOG_ERROR("websocket_app::on_worker_init %d", worker_obj.worker_id);
utility::singleton<lua_plugin>::instance()->on_worker_init(worker_obj.worker_id);
}
void websocket_app::on_main_stop(avant::server::server &server_obj)
{
LOG_ERROR("websocket_app::on_main_stop");
utility::singleton<lua_plugin>::instance()->on_main_stop();
}
void websocket_app::on_worker_stop(avant::workers::worker &worker_obj)
{
LOG_ERROR("websocket_app::on_worker_stop %d", worker_obj.worker_id);
utility::singleton<lua_plugin>::instance()->on_worker_stop(worker_obj.worker_id);
}
void websocket_app::on_main_tick(avant::server::server &server_obj)
{
utility::singleton<lua_plugin>::instance()->on_main_tick();
}
void websocket_app::on_worker_tick(avant::workers::worker &worker_obj)
{
utility::singleton<lua_plugin>::instance()->on_worker_tick(worker_obj.worker_id);
}
void websocket_app::on_worker_tunnel(avant::workers::worker &worker_obj, const ProtoPackage &package, const ProtoTunnelPackage &tunnel_package)
{
int cmd = package.cmd();
if (cmd == ProtoCmd::PROTO_CMD_TUNNEL_OTHER2WORKER_TEST)
{
ProtoTunnelOther2WorkerTest other2worker_test;
if (!proto::parse(other2worker_test, package))
{
LOG_ERROR("proto::parse(other2worker_test, package) failed");
return;
}
// LOG_ERROR("worker_id %d PROTO_CMD_TUNNEL_OTHER2WORKER_TEST time %llu", worker_obj.worker_id, other2worker_test.time());
}
else
{
LOG_ERROR("not exist handler %d", cmd);
}
}
void websocket_app::on_ctx_create(avant::connection::websocket_ctx &ctx)
{
// LOG_ERROR("websocket_app::on_ctx_create %llu", ctx.get_conn_gid());
}
void websocket_app::on_new_connection(avant::connection::websocket_ctx &ctx)
{
// LOG_ERROR("websocket_app::on_new_connection");
}
void websocket_app::on_close_connection(avant::connection::websocket_ctx &ctx)
{
// LOG_ERROR("websocket_app::on_close_connection");
}
void websocket_app::on_process_connection(avant::connection::websocket_ctx &ctx)
{
do
{
uint64_t all_data_len = ctx.get_recv_buffer_size();
if (all_data_len == 0)
{
break;
}
const char *data = ctx.get_recv_buffer_read_ptr();
size_t index = 0;
websocket_frame frame;
{
if (index >= all_data_len) // need next 1 byte
{
break;
}
uint8_t opcode = (uint8_t)data[index] & 0x0f;
websocket_frame_type type = n_2_websocket_frame_type(opcode);
if (type == websocket_frame_type::TEXT_FRAME || type == websocket_frame_type::BINARY_FRAME)
{
ctx.frame_first_opcode = opcode;
}
else if (type == websocket_frame_type::CONTINUATION_FRAME)
{
}
else
{
LOG_ERROR("frame not be allowed. opcode = %d", opcode);
ctx.set_conn_is_close(true);
ctx.event_mod(nullptr, event::event_poller::RWE, false);
break;
}
frame.fin = data[index] & 0x80;
frame.opcode = data[index] & 0x0F;
index++;
}
{
if (index >= all_data_len) // need next 1 byte
{
// LOG_ERROR("index[%llu] >= all_data_len[%llu]", index, all_data_len);
break;
}
frame.mask = (data[index] & 0x80) != 0;
frame.payload_length = data[index] & 0x7F;
index++;
}
{
if (frame.payload_length == 126)
{
frame.payload_length = 0;
if (index + 1 >= all_data_len) // need next 2 bytes
{
// LOG_ERROR("index[%llu] + 1 >= all_data_len[%llu]", index, all_data_len);
break;
}
uint16_t tmp = 0;
u_char *ph = nullptr;
ph = (u_char *)&tmp;
*ph++ = data[index];
*ph++ = data[index + 1];
tmp = ::ntohs(tmp);
frame.payload_length = tmp;
index += 2;
}
else if (frame.payload_length == 127)
{
frame.payload_length = 0;
if (index + 7 >= all_data_len) // need next 8 bytes
{
// LOG_ERROR("index[%llu] + 7 >= all_data_len[%llu]", index, all_data_len);
break;
}
uint32_t tmp = 0;
u_char *ph = (u_char *)&tmp;
*ph++ = data[index++]; // index+0
*ph++ = data[index++]; // index+1
*ph++ = data[index++]; // index+2
*ph++ = data[index++]; // index+3
frame.payload_length = ntohl(tmp);
frame.payload_length = frame.payload_length << 32;
ph = (u_char *)&tmp;
*ph++ = data[index++]; // index+4
*ph++ = data[index++]; // index+5
*ph++ = data[index++]; // index+6
*ph++ = data[index++]; // index+7
tmp = ntohl(tmp);
frame.payload_length = frame.payload_length | tmp;
}
}
{
if (frame.mask)
{
if (index + 3 >= all_data_len) // need next 4 bytes
{
// LOG_ERROR("index[%llu] + 3 >= all_data_len[%llu]", index, all_data_len);
break;
}
frame.masking_key = {(uint8_t)data[index], (uint8_t)data[index + 1], (uint8_t)data[index + 2], (uint8_t)data[index + 3]};
index += 4;
}
}
{
// already parser (value of the index) bytes
if (index + frame.payload_length - 1 >= all_data_len) // need next frame.playload_length bytes
{
// LOG_ERROR("index[%llu] + frame.payload_length[%llu] - 1 >= all_data_len[%llu]", index, frame.payload_length, all_data_len);
break;
}
std::string payload_data;
if (frame.payload_length != 0)
{
payload_data = std::move(std::string(&data[index], frame.payload_length));
}
if (frame.mask)
{
for (size_t i = 0; i < payload_data.size(); ++i)
{
payload_data[i] ^= frame.masking_key[i % 4];
}
}
frame.payload_data = std::move(payload_data);
ctx.frame_payload_data += std::move(frame.payload_data);
index += frame.payload_length;
}
{
ctx.recv_buffer_move_read_ptr_n(index);
if (frame.fin)
{
on_process_frame(ctx, frame);
}
}
} while (true);
if (ctx.get_recv_buffer_size() > 1024000)
{
ctx.set_conn_is_close(true);
ctx.event_mod(nullptr, event::event_poller::RWE, false);
LOG_ERROR("ctx.get_recv_buffer_size() > 1024000");
return;
}
if (ctx.frame_payload_data.size() > 1024000)
{
ctx.set_conn_is_close(true);
ctx.event_mod(nullptr, event::event_poller::RWE, false);
LOG_ERROR("ctx.frame_payload_data.size() > 1024000");
return;
}
}
void websocket_app::on_process_frame(avant::connection::websocket_ctx &ctx, const websocket_frame &frame)
{
// using tunnel to broadcast
ProtoTunnelWebsocketBroadcast websockBroadcast;
ProtoPackage package;
websockBroadcast.set_data(ctx.frame_payload_data);
ctx.frame_payload_data.clear();
ctx.worker_send_client_forward_message(ctx.get_conn_gid(), std::set<uint64_t>{}, avant::proto::pack_package(package, websockBroadcast, ProtoCmd::PROTO_CMD_TUNNEL_WEBSOCKET_BROADCAST));
}
void websocket_app::on_client_forward_message(avant::connection::websocket_ctx &ctx,
bool self,
ProtoTunnelClientForwardMessage &message,
const ProtoTunnelPackage &tunnel_package)
{
int cmd = message.innerprotopackage().cmd();
if (cmd == ProtoCmd::PROTO_CMD_TUNNEL_WEBSOCKET_BROADCAST)
{
uint8_t first_byte = 0x80 | websocket_frame_type_2_n(websocket_frame_type::TEXT_FRAME);
ProtoTunnelWebsocketBroadcast websocketBroadcast;
if (!avant::proto::parse(websocketBroadcast, message.innerprotopackage()))
{
LOG_ERROR("ProtoTunnelWebsocketBroadcast parse failed");
return;
}
send_sync_package(ctx, first_byte, websocketBroadcast.data().c_str(), websocketBroadcast.data().size());
}
else
{
LOG_ERROR("not exist handler %d", cmd);
}
}
int websocket_app::send_sync_package(avant::connection::websocket_ctx &ctx, uint8_t first_byte, const char *data, size_t data_len)
{
if (ctx.get_send_buffer_size() > 1024000)
{
LOG_ERROR("ctx.get_send_buffer_size() > 1024000");
ctx.set_conn_is_close(true);
ctx.event_mod(nullptr, event::event_poller::RWE, false);
return -1;
}
size_t message_length = data_len;
std::string frame;
frame.push_back(first_byte);
if (message_length <= 125)
{
frame.push_back(static_cast<uint8_t>(message_length));
}
else if (message_length <= 0xFFFF)
{
frame.push_back(126);
frame.push_back((message_length >> 8) & 0xFF);
frame.push_back(message_length & 0xFF);
}
else
{
frame.push_back(127);
for (int i = 7; i >= 0; --i)
{
frame.push_back((message_length >> (8 * i)) & 0xFF);
}
}
frame.insert(frame.end(), data, data + data_len);
return ctx.send_data(frame);
}
websocket_app::websocket_frame_type websocket_app::n_2_websocket_frame_type(uint8_t n)
{
n = n & 0x0f;
if (n == 0x1)
{
return websocket_frame_type::TEXT_FRAME;
}
else if (n == 0x2)
{
return websocket_frame_type::BINARY_FRAME;
}
else
{
if (n == 0x0)
{
return websocket_frame_type::CONTINUATION_FRAME;
}
else if (n >= 0x3 && n <= 0x7)
{
return websocket_frame_type::FURTHER_NON_CONTROL;
}
else if (n >= 0xb && n <= 0xf)
{
return websocket_frame_type::FURTHER_CONTROL;
}
else if (n == 0x8)
{
return websocket_frame_type::CONNECTION_CLOSE_FRAME;
}
else if (n == 0x9)
{
return websocket_frame_type::PING;
}
else if (n == 0xa)
{
return websocket_frame_type::PONG;
}
}
return websocket_frame_type::ERROR;
}
uint8_t websocket_app::websocket_frame_type_2_n(websocket_frame_type type, uint8_t idx /*= 0x0*/)
{
if (type == websocket_frame_type::TEXT_FRAME)
{
return 0x1;
}
else if (type == websocket_frame_type::BINARY_FRAME)
{
return 0x2;
}
else
{
if (type == websocket_frame_type::CONTINUATION_FRAME)
{
return 0x0;
}
else if (type == websocket_frame_type::FURTHER_NON_CONTROL && idx >= 0x0 && idx <= 0x4)
{
return 0x3 + idx;
}
else if (type == websocket_frame_type::FURTHER_CONTROL && idx >= 0x0 && idx <= 0x5)
{
return 0xb + idx;
}
else if (type == websocket_frame_type::CONNECTION_CLOSE_FRAME)
{
return 0x8;
}
else if (type == websocket_frame_type::PING)
{
return 0x9;
}
else if (type == websocket_frame_type::PONG)
{
return 0xa;
}
}
return 0x8;
}