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Copy pathuv_tcp_handle.cpp
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389 lines (367 loc) · 13.9 KB
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#include "message.h"
#include "network.h"
#include "node_lua.h"
#include "uv_tcp_handle.h"
void uv_tcp_listen_handle_t::on_accept(uv_stream_t* server, int status)
{
uv_tcp_listen_handle_t *listen_handle = (uv_tcp_listen_handle_t*)(server->data);
if (status == 0) {
listen_handle->m_has_accept_event = true;
listen_handle->try_accept();
} else if (!uv_is_closing((uv_handle_t*)server)) { /* may be we have already called uv_close. */
/* Here we depend on the lua_service socket object destructor to close uv_tcp_listen_handle_t object. */
singleton_ref(node_lua_t).context_send(listen_handle->m_source, 0, listen_handle->m_lua_ref, RESPONSE_TCP_ACCEPT, singleton_ref(network_t).last_error());
}
}
void uv_tcp_listen_handle_t::listen_tcp(request_tcp_listen_t& request)
{
uv_tcp_t* server = (uv_tcp_t*)m_handle;
#ifdef CC_MSVC
uv_tcp_simultaneous_accepts(server, 0);
#endif
if ((!request.m_ipv6 ? uv_tcp_bind(server, uv_ip4_addr(REQUEST_SPARE_PTR(request), request.m_port)) == 0 : uv_tcp_bind6(server, uv_ip6_addr(REQUEST_SPARE_PTR(request), request.m_port))) && uv_listen((uv_stream_t*)server, request.m_backlog, on_accept) == 0) {
if (!singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_LISTEN, (void*)this)) {
uv_close((uv_handle_t*)server, on_closed);
}
} else {
singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_LISTEN, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)server, on_closed);
}
}
void uv_tcp_listen_handle_t::listen_sock(request_tcp_listens_t& request)
{
uv_pipe_t* server = (uv_pipe_t*)m_handle;
char* sock = REQUEST_SPARE_PTR(request);
#ifndef CC_MSVC
{
uv_fs_t req;
uv_fs_unlink(server->loop, &req, sock, NULL);
uv_fs_req_cleanup(&req);
}
#endif
if (uv_pipe_bind(server, sock) == 0 && uv_listen((uv_stream_t*)server, -1, on_accept) == 0) {
if (!singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_LISTEN, (void*)this)) {
uv_close((uv_handle_t*)server, on_closed);
}
} else {
singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_LISTEN, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)server, on_closed);
}
}
void uv_tcp_listen_handle_t::try_accept()
{
if ((m_has_noblocking_accept || m_blocking_accept_count > 0) && (m_lua_ref != LUA_REFNIL && m_has_accept_event)) {
m_has_accept_event = false;
uv_tcp_socket_handle_t *client_handle = new uv_tcp_socket_handle_t(m_handle->loop, m_source, (m_handle->type == UV_NAMED_PIPE));
uv_handle_t *client = (uv_handle_t*)client_handle->m_handle;
if (uv_accept((uv_stream_t*)(m_handle), (uv_stream_t*)client) == 0) {
if (!singleton_ref(node_lua_t).context_send(m_source, 0, m_lua_ref, RESPONSE_TCP_ACCEPT, (void*)client_handle)) {
uv_close((uv_handle_t*)client, on_closed);
} else if (m_blocking_accept_count > 0) {
--m_blocking_accept_count;
}
} else {
uv_close((uv_handle_t*)client, on_closed);
}
}
}
void uv_tcp_listen_handle_t::accept(request_tcp_accept_t& request)
{
if (request.m_blocking) { //blocking
++m_blocking_accept_count;
} else { //non-blocking has started
m_has_noblocking_accept = true;
}
try_accept();
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
#define LARGE_UNCOMPLETE_LIMIT (1 * 1024)
#define SHARED_READ_BUFFER_SIZE (64 * 1024)
uv_buf_t uv_tcp_socket_handle_t::m_shared_read_buffer = { 0, NULL, };
void uv_tcp_socket_handle_t::make_shared_read_buffer()
{
if (!m_shared_read_buffer.base) {
m_shared_read_buffer.base = (char*)nl_malloc(SHARED_READ_BUFFER_SIZE);
assert(m_shared_read_buffer.base != NULL);
m_shared_read_buffer.len = SHARED_READ_BUFFER_SIZE;
}
}
void uv_tcp_socket_handle_t::free_shared_read_buffer()
{
if (m_shared_read_buffer.base) {
nl_free(m_shared_read_buffer.base);
m_shared_read_buffer.base = NULL;
m_shared_read_buffer.len = 0;
}
}
void uv_tcp_socket_handle_t::on_connect(uv_connect_t* req, int status)
{
uv_handle_t *client = (uv_handle_t*)req->handle;
uv_tcp_socket_handle_t *client_handle = (uv_tcp_socket_handle_t*)client->data;
uint32_t session = (uint64_t)req->data;
if (status == 0) { //connect success
if (!singleton_ref(node_lua_t).context_send(client_handle->m_source, 0, session, RESPONSE_TCP_CONNECT, (void*)client_handle)) {
uv_close((uv_handle_t*)client, on_closed);
}
} else if (!uv_is_closing((uv_handle_t*)client)) { /* may be we have already called uv_close */
singleton_ref(node_lua_t).context_send(client_handle->m_source, 0, session, RESPONSE_TCP_CONNECT, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)client, on_closed);
}
nl_free(req);
}
void uv_tcp_socket_handle_t::connect_tcp(request_tcp_connect_t& request)
{
uv_tcp_t *client = (uv_tcp_t*)m_handle;
const char *remote_host = REQUEST_SPARE_PTR(request);
const char *local_host = remote_host + strlen(remote_host) + 1;
if (strlen(local_host) > 0 || request.m_local_port != 0) {
if (!request.m_local_ipv6 ? uv_tcp_bind(client, uv_ip4_addr(local_host, request.m_local_port)) != 0 : uv_tcp_bind6(client, uv_ip6_addr(local_host, request.m_local_port)) != 0) {
singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_CONNECT, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)client, on_closed);
return;
}
}
uv_connect_t* req = (uv_connect_t*)nl_malloc(sizeof(*req));
req->data = (void*)request.m_session;
if (!request.m_remote_ipv6 ? uv_tcp_connect(req, client, uv_ip4_addr(remote_host, request.m_remote_port), on_connect) != 0 : uv_tcp_connect6(req, client, uv_ip6_addr(remote_host, request.m_remote_port), on_connect) != 0) {
singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_CONNECT, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)client, on_closed);
nl_free(req);
}
}
void uv_tcp_socket_handle_t::connect_sock(request_tcp_connects_t& request)
{
uv_pipe_t *client = (uv_pipe_t*)m_handle;
const char *sock_name = REQUEST_SPARE_PTR(request);
uv_connect_t* req = (uv_connect_t*)nl_malloc(sizeof(*req));
req->data = (void*)request.m_session;
uv_pipe_connect(req, client, sock_name, on_connect);
}
void uv_tcp_socket_handle_t::on_write(uv_write_t* req, int status)
{
write_uv_request_t *uv_request = (write_uv_request_t*)req->data;
uv_tcp_socket_handle_t *socket_handle = (uv_tcp_socket_handle_t*)(req->handle->data);
if (status != 0) {
socket_handle->m_write_error = singleton_ref(network_t).last_error();
}
if (uv_request->m_length > 0) {
nl_free((void*)uv_request->m_string);
} else {
buffer_release(uv_request->m_buffer);
}
if (uv_request->m_session != LUA_REFNIL) {
singleton_ref(node_lua_t).context_send(socket_handle->m_source, 0, uv_request->m_session, RESPONSE_TCP_WRITE, status == 0 ? UV_OK : socket_handle->m_write_error);
}
socket_handle->put_write_cached_request(uv_request);
}
/* We must response something to lua-service even error occurred. */
void uv_tcp_socket_handle_t::write(request_tcp_write_t& request)
{
int result;
if (m_write_error == UV_OK) {
uv_buf_t uv_buf[] = { { 0, NULL }, { 0, NULL } };
write_uv_request_t* uv_request = get_write_cached_request();
uv_request->m_session = request.m_session;
uv_request->m_length = request.m_length;
if (request.m_length > 0) {
uv_request->m_string = request.m_string;
uv_buf[1].len = request.m_length;
uv_buf[1].base = (char*)request.m_string;
} else {
uv_request->m_buffer = request.m_buffer;
uv_buf[1].len = buffer_data_length(request.m_buffer);
uv_buf[1].base = buffer_data_ptr(request.m_buffer);
}
if (m_write_head_option.bytes > 0) { /* uv_buf[1].len must be checked with m_write_head_option.max in tcp_socket write method. */
endian_from_integer(uv_buf[1].len, (char*)uv_request->m_head_buffer, m_write_head_option.bytes, m_write_head_option.endian);
uv_buf[0].len = m_write_head_option.bytes;
uv_buf[0].base = (char*)uv_request->m_head_buffer;
result = uv_write(&uv_request->m_write_req, (uv_stream_t*)(m_handle), uv_buf, 2, on_write);
} else {
result = uv_write(&uv_request->m_write_req, (uv_stream_t*)(m_handle), uv_buf + 1, 1, on_write);
}
if (result == 0) return;
m_write_error = singleton_ref(network_t).last_error(); /* write error occurs */
put_write_cached_request(uv_request);
}
/* write error had been occurred */
if (request.m_length > 0) {
nl_free((void*)request.m_string);
} else {
buffer_release(request.m_buffer);
}
if (request.m_session != LUA_REFNIL) {
singleton_ref(node_lua_t).context_send(m_source, 0, request.m_session, RESPONSE_TCP_WRITE, m_write_error);
}
}
uv_buf_t uv_tcp_socket_handle_t::on_read_alloc(uv_handle_t* handle, size_t suggested_size)
{
uv_tcp_socket_handle_t *socket_handle = (uv_tcp_socket_handle_t*)(handle->data);
if (buffer_write_size(socket_handle->m_read_buffer) < LARGE_UNCOMPLETE_LIMIT) {
if (!m_shared_read_buffer.base) {
make_shared_read_buffer();
}
return m_shared_read_buffer;
}
/* read in m_shared_read_buffer but not complete large pack(optimization for memcpy) */
uv_buf_t buf;
buf.base = buffer_write_ptr(socket_handle->m_read_buffer);
buf.len = buffer_write_size(socket_handle->m_read_buffer);
return buf;
}
void uv_tcp_socket_handle_t::write_read_buffer(ssize_t nread, uv_buf_t buf)
{
if (nread == 0) {
return;
}
if (nread == -1) {
write_read_buffer_finish(singleton_ref(network_t).last_error());
return;
}
char* buffer = buf.base;
if (buffer != m_shared_read_buffer.base) {
buffer_adjust_len(m_read_buffer, nread);
if (buffer_write_size(m_read_buffer) == 0) {
write_read_buffer_finish(UV_OK);
}
return;
}
while (nread > 0) {
int8_t unread_head_bytes = m_read_head_option.bytes - m_read_head_bytes;
if (unread_head_bytes > 0) {
if (nread >= unread_head_bytes) {
memcpy((char*)(m_read_head_buffer + m_read_head_bytes), buffer, unread_head_bytes);
m_read_head_bytes = m_read_head_option.bytes;
m_read_bytes = endian_to_integer((char*)m_read_head_buffer, m_read_head_option.bytes, m_read_head_option.endian);
if (m_read_bytes <= m_read_head_option.max) {
m_read_buffer = buffer_new(m_read_bytes, NULL, 0);
if (!buffer_is_valid(m_read_buffer)) {
write_read_buffer_finish(UV_ENOMEM);
return;
}
} else {
write_read_buffer_finish(UV_EMSGSIZE);
return;
}
buffer += unread_head_bytes;
nread -= unread_head_bytes;
} else {
memcpy((char*)(m_read_head_buffer + m_read_head_bytes), buffer, nread);
m_read_head_bytes += nread;
return;
}
} else if (m_read_head_option.bytes == 0) {
m_read_buffer = buffer_new(nread, buffer, nread);
if (!buffer_is_valid(m_read_buffer)) {
write_read_buffer_finish(UV_ENOMEM);
return;
}
write_read_buffer_finish(UV_OK);
return;
}
uint32_t unread_bytes = buffer_write_size(m_read_buffer);
if (unread_bytes > 0 && nread > 0) {
if (nread >= unread_bytes) {
buffer_append(m_read_buffer, buffer, unread_bytes);
buffer += unread_bytes;
nread -= unread_bytes;
} else {
buffer_append(m_read_buffer, buffer, nread);
return;
}
}
if (buffer_write_size(m_read_buffer) == 0) {
write_read_buffer_finish(UV_OK);
}
}
}
void uv_tcp_socket_handle_t::clear_read_cached_buffers()
{
buffer_release(m_read_buffer);
for (int i = 0; i < m_read_cached_buffers.size(); ++i) {
buffer_release(m_read_cached_buffers.front());
m_read_cached_buffers.pop();
}
buffer_make_invalid(m_read_buffer);
}
void uv_tcp_socket_handle_t::write_read_buffer_finish(uv_err_code read_error)
{
if (read_error == UV_OK) {
if (read_start_state()) {
singleton_ref(node_lua_t).context_send_buffer_release(m_source, 0, m_lua_ref, RESPONSE_TCP_READ, m_read_buffer);
if (m_blocking_read_count > 0) {
--m_blocking_read_count;
}
if (!read_start_state()) {
uv_read_stop((uv_stream_t*)m_handle);
}
} else {
m_read_cached_buffers.push(m_read_buffer);
}
buffer_make_invalid(m_read_buffer);
if (m_read_head_option.bytes > 0) {
m_read_head_bytes = 0;
m_read_bytes = 0;
}
} else {
if (m_read_error == UV_OK) {
m_read_error = read_error;
singleton_ref(node_lua_t).context_send(m_source, 0, m_lua_ref, RESPONSE_TCP_READ, m_read_error);
uv_read_stop((uv_stream_t*)m_handle);
}
clear_read_cached_buffers();
}
}
/* When RESPONSE_TCP_READ error occurs, read request must also stop in context_lua thread. */
void uv_tcp_socket_handle_t::on_read(uv_stream_t* stream, ssize_t nread, uv_buf_t buf)
{
((uv_tcp_socket_handle_t*)(stream->data))->write_read_buffer(nread, buf);
}
/* When RESPONSE_TCP_READ error occurs, all read request must also stop in context_lua thread. */
void uv_tcp_socket_handle_t::read(request_tcp_read_t& request)
{
if (m_read_error != UV_OK) {
return;
}
bool read_started = read_start_state();
if (request.m_blocking) { //blocking
++m_blocking_read_count;
} else { //non-blocking has started
m_has_noblocking_read = true;
}
for (int i = 0; i < m_read_cached_buffers.size(); ++i) {
singleton_ref(node_lua_t).context_send_buffer_release(m_source, 0, m_lua_ref, RESPONSE_TCP_READ, m_read_cached_buffers.front());
m_read_cached_buffers.pop();
if (m_blocking_read_count > 0) {
--m_blocking_read_count;
}
if (!read_start_state()) {
return;
}
}
if (!read_started && uv_read_start((uv_stream_t*)(m_handle), on_read_alloc, on_read) != 0) {
if (!uv_is_closing((uv_handle_t*)(m_handle))) {
m_read_error = singleton_ref(network_t).last_error();
singleton_ref(node_lua_t).context_send(m_source, 0, m_lua_ref, RESPONSE_TCP_READ, m_read_error);
clear_read_cached_buffers();
}
}
}
void uv_tcp_socket_handle_t::set_option(uint8_t type, const char *option)
{
tcp_option_type opt_type = (tcp_option_type)type;
switch (opt_type)
{
case OPT_TCP_NODELAY:
set_tcp_nodelay(*option);
break;
default:
break;
}
}
void uv_tcp_socket_handle_t::set_tcp_nodelay(bool enable)
{
if (m_handle->type == UV_TCP && !uv_is_closing((uv_handle_t*)(m_handle))) {
uv_tcp_nodelay((uv_tcp_t*)m_handle, enable);
}
}