-
Notifications
You must be signed in to change notification settings - Fork 11
Expand file tree
/
Copy pathuv_tcp_handle.cpp
More file actions
501 lines (474 loc) · 18.2 KB
/
Copy pathuv_tcp_handle.cpp
File metadata and controls
501 lines (474 loc) · 18.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
#include "message.h"
#include "network.h"
#include "node_lua.h"
#include "uv_tcp_handle.h"
#include "lua_tcp_handle.h"
#if defined (CC_MSVC)
#define uv_tcp_fd(handle) ((handle)->socket)
#elif defined(__APPLE__)
extern "C" int uv___stream_fd(uv_stream_t* handle);
#define uv_tcp_fd(handle) (uv___stream_fd((uv_stream_t*) (handle)))
#else
#define uv_tcp_fd(handle) ((handle)->io_watcher.fd)
#endif /* defined(__APPLE__) */
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)) == 0) && 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 (m_handle->type == UV_TCP) {
client_handle->m_tcp_sock = uv_tcp_fd((uv_tcp_t*)client);
}
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)
typedef struct {
uv_getaddrinfo_t m_request;
uv_tcp_socket_handle_t *m_client;
uint32_t m_session;
} uv_addr_resolver_t;
uv_tcp_socket_handle_t::~uv_tcp_socket_handle_t()
{
clear_read_cached_buffers();
clear_write_cached_requests();
singleton_ref(network_t).pop_shared_write_socket(SOCKET_MAKE_FD(m_lua_ref, m_source));
}
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 (client->type == UV_TCP) {
client_handle->m_tcp_sock = uv_tcp_fd((uv_tcp_t*)client);
}
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::on_resolve(uv_getaddrinfo_t* req, int status, struct addrinfo* res)
{
uv_addr_resolver_t* resolver = (uv_addr_resolver_t*)(req->data);
uv_tcp_socket_handle_t *client_handle = (uv_tcp_socket_handle_t*)resolver->m_client;
uv_tcp_t* client = (uv_tcp_t*)client_handle->m_handle;
if (status == 0) {
struct sockaddr_in* addr = (struct sockaddr_in*)res->ai_addr;
uv_connect_t* req = (uv_connect_t*)nl_malloc(sizeof(*req));
req->data = (void*)resolver->m_session;
if ((addr->sin_family == AF_INET) ? uv_tcp_connect(req, client, *(struct sockaddr_in*)addr, on_connect) != 0 : uv_tcp_connect6(req, client, *(struct sockaddr_in6*)addr, on_connect) != 0) {
singleton_ref(node_lua_t).context_send(client_handle->m_source, 0, resolver->m_session, RESPONSE_TCP_CONNECT, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)client, on_closed);
nl_free(req);
}
nl_free(resolver);
uv_freeaddrinfo(res);
} else {
singleton_ref(node_lua_t).context_send(client_handle->m_source, 0, resolver->m_session, RESPONSE_TCP_CONNECT, singleton_ref(network_t).last_error());
uv_close((uv_handle_t*)client, on_closed);
nl_free(resolver);
}
}
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;
}
}
union {
sockaddr_in addr4;
sockaddr_in6 addr6;
} sock_addr;
uv_err_code err = host_sockaddr(request.m_remote_ipv6, remote_host, request.m_remote_port, (struct sockaddr*)&sock_addr);
if (err == UV_OK) {
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, sock_addr.addr4, on_connect) != 0 : uv_tcp_connect6(req, client, sock_addr.addr6, 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);
}
} else if (err == UV_EINVAL) { //try resolve host name
char port[8];
struct addrinfo hints;
hints.ai_family = !request.m_remote_ipv6 ? AF_INET : AF_INET6;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = 0;
uv_addr_resolver_t* resolver = (uv_addr_resolver_t*)nl_malloc(sizeof(uv_addr_resolver_t));
itoa(request.m_remote_port, port, 10);
resolver->m_client = this;
resolver->m_session = request.m_session;
resolver->m_request.data = resolver;
if (uv_getaddrinfo(client->loop, &resolver->m_request, on_resolve, remote_host, port, &hints) != 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(resolver);
}
} else {
singleton_ref(node_lua_t).context_send(request.m_source, 0, request.m_session, RESPONSE_TCP_CONNECT, err);
uv_close((uv_handle_t*)client, on_closed);
}
}
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(uv_request->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);
}
void uv_tcp_socket_handle_t::write(request_tcp_write_t& request)
{
int32_t err = UV_UNKNOWN;
if (request.m_shared_write) {
uv_tcp_socket_handle_t* handle = (uv_tcp_socket_handle_t*)singleton_ref(network_t).get_shared_write_socket(request.m_socket_fd);
if (handle != NULL) {
uint32_t length = request.m_length > 0 ? request.m_length : (uint32_t)buffer_data_length(request.m_buffer);
if (uv_is_closing((uv_handle_t*)handle)) {
err = NL_ETCPSCLOSED;
} else if (!check_head_option_max(handle->m_write_head_option, length)) {
err = NL_ETCPWRITELONG;
} else {
err = handle->write_handle(request);
}
} else {
err = NL_ETCPNOWSHARED;
}
} else {
err = request.m_socket_handle->write_handle(request);
}
if (err != UV_OK) { /* 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(request.m_source, 0, request.m_session, RESPONSE_TCP_WRITE, (nl_err_code)err);
}
}
}
/* We must response something to lua-service even error occurred. */
int32_t uv_tcp_socket_handle_t::write_handle(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_source = request.m_source;
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 UV_OK;
m_write_error = singleton_ref(network_t).last_error(); /* write error occurs */
put_write_cached_request(uv_request);
}
return 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) {
return singleton_ref(network_t).make_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 != singleton_ref(network_t).get_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);
int size = m_read_cached_buffers.size();
for (int i = 0; i < 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) {
trigger_read_error(read_error);
uv_read_stop((uv_stream_t*)m_handle);
} else {
clear_read_cached_buffers();
}
}
}
//when read error occurred, we need to send the cached buffer to lua_context in case of half closed peer socket.
//peer socket may only shut down write(half close) before totally close the socket.
void uv_tcp_socket_handle_t::trigger_read_error(uv_err_code read_error)
{
int size = m_read_cached_buffers.size();
for (int i = 0; i < 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();
}
buffer_release(m_read_buffer);
buffer_make_invalid(m_read_buffer);
singleton_ref(node_lua_t).context_send(m_source, 0, m_lua_ref, RESPONSE_TCP_READ, read_error);
atomic_barrier();
m_read_error = read_error;
}
/* 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;
}
int size = m_read_cached_buffers.size();
for (int i = 0; i < 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))) {
trigger_read_error(singleton_ref(network_t).last_error());
}
}
}
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;
case OPT_TCP_WSHARED:
set_tcp_wshared(*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);
}
}
void uv_tcp_socket_handle_t::set_tcp_wshared(bool enable)
{
if (!uv_is_closing((uv_handle_t*)(m_handle))) {
int64_t fd = SOCKET_MAKE_FD(m_lua_ref, m_source);
if (enable) {
singleton_ref(network_t).put_shared_write_socket(fd, this);
} else {
singleton_ref(network_t).pop_shared_write_socket(fd);
}
}
}