forked from dungeonsnd/cppfastdevelop
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcf_network.cpp
More file actions
executable file
·531 lines (474 loc) · 16.7 KB
/
Copy pathcf_network.cpp
File metadata and controls
executable file
·531 lines (474 loc) · 16.7 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
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
/*
* Copyright 2013, Jeffery Qiu. All rights reserved.
*
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE(the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.gnu.org/licenses/lgpl.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//// Author: Jeffery Qiu (dungeonsnd at gmail dot com)
////
#include "cppfoundation/cf_network.hpp"
#include "cppfoundation/cf_lock.hpp"
#include "cppfoundation/cf_lock_guard.hpp"
#include "cppfoundation/cf_utility.hpp"
namespace cf
{
cf_int GetHostByName(cf_const std::string & name, struct hostent * phe)
{
static PthreadMutex mutex;
LockGuard<PthreadMutex> lock(mutex);
struct hostent * _phe = cf_gethostbyname(name.c_str());
if (_phe == NULL)
return -1;
*phe = *_phe;
return 0;
}
cf_void SetBlocking(cf_int sockfd,bool blocking)
{
cf_int flags = cf_fcntl(sockfd, F_GETFL, 0);
if (-1==flags)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_fcntl !")
cf_int rt =0;
if ( (flags&O_NONBLOCK) && blocking )
rt = ::fcntl(sockfd, F_SETFL, flags & ~O_NONBLOCK);
else if ( !(flags&O_NONBLOCK) && false==blocking )
rt = ::fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
else
; // Already set.
if (-1==rt)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_fcntl !");
}
cf_fd CreateServerSocket (const cf_int port,const cf_int socktype,
bool reuseAddr,bool blocking,
const cf_int backlog)
{
cf_fd listenfd = cf_socket(AF_INET, SOCK_STREAM, 0);
if (listenfd == -1)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_socket !");
int option_value =1;
if( reuseAddr &&
-1==cf_setsockopt(listenfd,SOL_SOCKET,
SO_REUSEADDR,&option_value,sizeof(int)) )
{
cf_close (listenfd);
_THROW(cf::SyscallExecuteError,
"Failed to execute cf_setsockopt (SO_REUSEADDR)! ");
}
struct sockaddr_in servaddr;
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl (INADDR_ANY);
servaddr.sin_port = htons (port);
if (-1 == cf_bind (listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr)))
{
cf_close (listenfd);
_THROW(cf::SyscallExecuteError, "Failed to execute cf_bind !");
}
if(listenfd>0&&false==blocking)
SetBlocking(listenfd,blocking);
if (-1 == cf_listen(listenfd, backlog) )
{
cf_close (listenfd);
_THROW_FMT(cf::SyscallExecuteError, "Failed to execute cf_listen !");
}
return listenfd;
}
cf_int CreateLocalServerSocket(const std::string & path,const cf_int socktype,
const cf_int backlog)
{
cf_int listenfd = cf_socket(AF_LOCAL, SOCK_STREAM, 0);
if (listenfd != 0)
_THROW_FMT(cf::SyscallExecuteError, "Failed to execute cf_socket !");
if ( 0!=cf_unlink(path.c_str()) )
_THROW_FMT(cf::SyscallExecuteError, "Failed to execute cf_unlink !");
struct sockaddr_un servaddr;
cf_memset(&servaddr,0,sizeof(servaddr));
servaddr.sun_family = AF_LOCAL;
cf_strcpy(servaddr.sun_path, path.c_str());
if ( 0!=cf_bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) )
_THROW(cf::SyscallExecuteError, "Failed to execute cf_unlink !");
if ( 0!=cf_listen(listenfd, backlog) )
_THROW(cf::SyscallExecuteError, "Failed to execute cf_listen !");
return listenfd;
}
bool IsSocketBroken(cf_fd fd)
{
std::string buf(8, 0);
cf_int flags = cf_fcntl(fd, F_GETFL, 0);
cf_int rt = cf_fcntl(fd, F_SETFL, flags|O_NONBLOCK);
cf_int rc = ::recv(fd, &buf[0], buf.size(), MSG_PEEK);
rt = cf_fcntl(fd, F_SETFL, flags);
bool broken =false;
if (rc == 0)
broken =true;
else if (rc == -1 && (errno == EINTR || errno == EWOULDBLOCK
|| errno == EAGAIN))
broken =false;
else if (rc == -1)
broken =true;
else
broken =false;
return broken;
}
cf_void ConnectToServer(cf_cpstr ip,cf_uint32 port,cf_uint32 sum,
std::vector<cf_fd> & clientfds)
{
for(cf_uint32 i=0; i<sum; i++)
{
cf_fd sockfd;
struct sockaddr_in servaddr;
sockfd=cf_socket(AF_INET, SOCK_STREAM, 0);
if(-1==sockfd)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_socket !");
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family=AF_INET;
servaddr.sin_port=htons(port);
cf_inet_pton(AF_INET, ip, &servaddr.sin_addr);
cf_int rt =cf_connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
if (-1==rt)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_connect !");
clientfds.push_back(sockfd);
}
}
cf_int IOWaitting(struct pollfd & pfd,cf_int32 timeoutMilliSeconds)
{
cf_int rt =0;
if(timeoutMilliSeconds < 0)
timeoutMilliSeconds =-1;
rt=cf_poll(&pfd, 1, timeoutMilliSeconds);
if (-1==rt)
_THROW(SyscallExecuteError, "Failed to execute cf_poll !");
return rt;
}
cf_int OutputWait(cf_fd sockfd,cf_int32 timeoutMilliSeconds)
{
struct pollfd pfd = {sockfd,POLLOUT,0};
return IOWaitting(pfd,timeoutMilliSeconds);
}
cf_int InputWait(cf_fd sockfd,cf_int32 timeoutMilliSeconds)
{
struct pollfd pfd = {sockfd,POLLIN,0};
return IOWaitting(pfd,timeoutMilliSeconds);
}
/**
return true,send successfully.hasDone bytes have sent.
return false,timeout,hasDone bytes have sent.
**/
bool SendSegmentSync(cf_fd sockfd,cf_cpstr buf, ssize_t totalLen,
ssize_t & hasDone,cf_int32 timeoutMilliSeconds,ssize_t segsize)
{
if(totalLen == 0)
return true;
ssize_t len=0;
ssize_t lenLeft =0;
cf_uint64 end,begin;
for(hasDone=0; hasDone < totalLen;)
{
cf_uint64 seconds =0;
cf_uint32 useconds =0;
cf::Gettimeofday(seconds, useconds);
begin =seconds*1000+useconds%1000;
if(0==OutputWait(sockfd,timeoutMilliSeconds)) // timeout!
return false;
lenLeft = totalLen-hasDone;
if (segsize>0 && lenLeft > segsize)
lenLeft = segsize;
len =cf_write(sockfd,&(buf[hasDone]),lenLeft);
if(-1==len)
_THROW(SyscallExecuteError, "Failed to execute cf_write !");
hasDone +=len;
// printf("after cf_write , totalLen=%u,hasDone=%u,len=%u,lenLeft=%u \n",
// (cf_uint32)totalLen,(cf_uint32)hasDone,(cf_uint32)len,(cf_uint32)lenLeft);
cf::Gettimeofday(seconds, useconds);
end =seconds*1000+useconds%1000;
timeoutMilliSeconds -=(end-begin);
if (timeoutMilliSeconds <= 0)
return false;
}
return true;
}
bool RecvSegmentSync(cf_fd sockfd,cf_char * buf, ssize_t totalLen,
ssize_t & hasDone, bool & peerClosedWhenRead,
cf_int32 timeoutMilliSeconds,ssize_t segsize)
{
if(totalLen == 0)
return true;
peerClosedWhenRead =false;
ssize_t len=0;
ssize_t lenLeft =0;
cf_uint64 end,begin;
for(hasDone=0; hasDone < totalLen;)
{
cf_uint64 seconds =0;
cf_uint32 useconds =0;
cf::Gettimeofday(seconds, useconds);
begin =seconds*1000+useconds%1000;
if(0==InputWait(sockfd,timeoutMilliSeconds)) // timeout!
return false;
lenLeft = totalLen-hasDone;
if (segsize>0 && lenLeft > segsize)
lenLeft = segsize;
len =cf_read(sockfd,&(buf[hasDone]),lenLeft);
if(-1==len)
_THROW(SyscallExecuteError, "Failed to execute cf_write !");
hasDone +=len;
// printf("after cf_read , totalLen=%u,hasDone=%u,len=%u,lenLeft=%u \n",
// (cf_uint32)totalLen,(cf_uint32)hasDone,(cf_uint32)len,(cf_uint32)lenLeft);
if ( 0==len ) // len==0 means reaching end.
{
peerClosedWhenRead =true;
printf("after cf_read , 0==len \n");
return true;
}
cf::Gettimeofday(seconds, useconds);
end =seconds*1000+useconds%1000;
timeoutMilliSeconds -=(end-begin);
if (timeoutMilliSeconds <= 0)
return false;
}
return true;
}
#define CF_NETWORK_ACCEPT_BREAK \
((errno == EAGAIN)||(errno == EWOULDBLOCK)||(errno==ECONNABORTED))
#define CF_NETWORK_NULLFD \
((errno == EMFILE)||(errno == ENFILE)||(errno == ENOBUFS)||(errno == ENOMEM))
bool AcceptAsync(cf_fd listenfd, std::vector < T_SESSION > & clients)
{
static cf_fd nullfd =cf_open("/dev/null",O_RDONLY|O_CLOEXEC,0);
// if(nullfd<0) // Don't test for performance.
// _THROW(cf::SyscallExecuteError, "Failed to execute cf_open !");
bool rt =false;
while (true)
{
struct sockaddr_in in_addr;
socklen_t in_len;
in_len = sizeof in_addr;
cf_int infd = cf_accept (listenfd, (sockaddr *)&in_addr, &in_len);
if (infd == -1)
{
if (CF_NETWORK_ACCEPT_BREAK)
{
#if 0
fprintf (stderr, "CF_NETWORK_ACCEPT_BREAK ,errno=%d,%s, pid=%d \n\n",
errno,strerror(errno),cf_int(getpid()));
#endif
break;
}
else if (CF_NETWORK_NULLFD)
{
#if CF_SWITCH_PRINT
fprintf (stderr, "Warning,accept return CF_NETWORK_NULLFD,"
"accept return -1 and errno=%d,%s!\n"
"going to close fd(%d),and close this client! pid=%d \n",
errno,strerror(errno),nullfd,cf_int(getpid()));
#endif
cf_close(nullfd);
nullfd =cf_accept(listenfd, NULL, NULL);
if ( nullfd==-1&&CF_NETWORK_ACCEPT_BREAK )
{
nullfd =open("/dev/null",O_RDONLY|O_CLOEXEC,0);
if(nullfd<0)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_open !");
break;
}
if(nullfd<0)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_accept !");
cf_close(nullfd);
nullfd =open("/dev/null",O_RDONLY|O_CLOEXEC,0);
if(nullfd<0)
_THROW(cf::SyscallExecuteError, "Failed to execute cf_open !");
continue;
}
else
{
_THROW(cf::SyscallExecuteError, "Failed to execute accept !");
break;
}
}
else
{
T_SESSION ses;
CF_NEWOBJ(p, Socket , infd, in_addr.sin_addr, htons(in_addr.sin_port));
if(NULL==p)
_THROW(AllocateMemoryError, "Allocate memory failed !");
ses.reset(p);
clients.push_back(ses);
rt =true;
}
}
return rt;
}
cf_int SendSegmentAsync(cf_fd sockfd,cf_cpstr buf, ssize_t totalLen,
ssize_t segsize)
{
if(totalLen == 0)
return 0;
ssize_t len=0;
ssize_t lenLeft =0;
ssize_t alreadyDone=0;
while(alreadyDone < totalLen)
{
lenLeft = totalLen-alreadyDone;
if (segsize>0 && lenLeft > segsize)
lenLeft = segsize;
len =cf_send(sockfd,&(buf[alreadyDone]),lenLeft,MSG_DONTWAIT);
if(-1==len)
{
if(EAGAIN==errno||EWOULDBLOCK==errno)
break;
else
_THROW(SyscallExecuteError, "Failed to execute cf_write !");
}
alreadyDone +=len;
/* fprintf (stderr,
"+++ cf_send,totalLen=%u,alreadyDone=%u,lenLeft=%u,len=%u\n",
(cf_uint32)totalLen,(cf_uint32)alreadyDone,
(cf_uint32)lenLeft,(cf_uint32)len); */
}
return cf_int(alreadyDone);
}
cf_int RecvSegmentAsync(cf_fd sockfd,cf_char * buf, ssize_t totalLen,
bool & peerClosedWhenRead, ssize_t segsize)
{
if(totalLen == 0)
return 0;
peerClosedWhenRead =false;
ssize_t len=0;
ssize_t lenLeft =0;
ssize_t alreadyDone=0;
while(alreadyDone < totalLen)
{
lenLeft = totalLen-alreadyDone;
if (segsize>0 && lenLeft > segsize)
lenLeft = segsize;
len =cf_recv(sockfd,&(buf[alreadyDone]),lenLeft,MSG_DONTWAIT);
if(-1==len)
{
if(EAGAIN==errno||EWOULDBLOCK==errno)
break;
else
_THROW(SyscallExecuteError, "Failed to execute cf_write !");
}
alreadyDone +=len;
/* fprintf (stderr,
"+++ cf_recv,totalLen=%u,alreadyDone=%u,lenLeft=%u,len=%u \n",
(cf_uint32)totalLen,(cf_uint32)alreadyDone,
(cf_uint32)lenLeft,(cf_uint32)len); */
if ( 0==len ) // len==0 means reaching end.
{
peerClosedWhenRead =true;
break;
}
}
return cf_int(alreadyDone);
}
// Send fd over unix domain socket.
namespace networkdefs
{
union _tagcontrol_un_single
{
struct cmsghdr cm;
char control[ CMSG_SPACE(sizeof(cf_int)*1) ];
} control_un_single;
const size_t sizeof_control_un_single =sizeof(control_un_single.control);
union _tagcontrol_un_small
{
struct cmsghdr cm;
char control[ CMSG_SPACE(sizeof(cf_int)*SEND_FDS_SUMMAX_SMALL) ];
} control_un_small;
const size_t sizeof_control_un_small =sizeof(control_un_small.control);
union _tagcontrol_un_large
{
struct cmsghdr cm;
char control[ CMSG_SPACE(sizeof(cf_int)*SEND_FDS_SUMMAX_LARGE) ];
} control_un_large;
const size_t sizeof_control_un_large =sizeof(control_un_large.control);
} // namespace networkdefs
ssize_t SendFds(const cf_int fd, const cf_int * sendfdarray,
const size_t fdarraylen,
void * dataExtra, const size_t dataExtraBytes)
{
std::string control_un(0,'\0');
if(fdarraylen==1)
control_un.resize(networkdefs::sizeof_control_un_single);
else if(fdarraylen<=networkdefs::SEND_FDS_SUMMAX_SMALL)
control_un.resize(networkdefs::sizeof_control_un_small);
else if(fdarraylen<=networkdefs::SEND_FDS_SUMMAX_LARGE)
control_un.resize(networkdefs::sizeof_control_un_large);
else
_THROW_FMT(ValueError, "fdarraylen{%llu} is too large !",(cf_uint64)fdarraylen);
struct msghdr msg;
msg.msg_control = (void *)(&control_un[0]);
msg.msg_controllen = control_un.size();
struct cmsghdr * cmptr;
cmptr = CMSG_FIRSTHDR(&msg);
cmptr->cmsg_len =CMSG_LEN( sizeof(cf_int)*fdarraylen );
cmptr->cmsg_level = SOL_SOCKET;
cmptr->cmsg_type = SCM_RIGHTS;
for(size_t i=0; i<fdarraylen; i++)
*( (cf_int *) (CMSG_DATA(cmptr)+sizeof(cf_int)*i) ) = sendfdarray[i];
msg.msg_name = NULL;
msg.msg_namelen = 0;
struct iovec iov[1];
iov[0].iov_base = dataExtra;
iov[0].iov_len = dataExtraBytes;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
return (sendmsg(fd, &msg, 0));
}
ssize_t RecvFds(const cf_int fd, cf_int * recvfdarray, const size_t fdarraylen,
void * dataExtra, size_t dataExtraBytes)
{
std::string control_un(0,'\0');
if(fdarraylen==1)
control_un.resize(networkdefs::sizeof_control_un_single);
else if(fdarraylen<=networkdefs::SEND_FDS_SUMMAX_SMALL)
control_un.resize(networkdefs::sizeof_control_un_small);
else if(fdarraylen<=networkdefs::SEND_FDS_SUMMAX_LARGE)
control_un.resize(networkdefs::sizeof_control_un_large);
else
_THROW_FMT(ValueError, "fdarraylen{%llu} is too large !",(cf_uint64)fdarraylen);
struct msghdr msg;
msg.msg_control = (void *)(&control_un[0]);
msg.msg_controllen = control_un.size();
struct cmsghdr * cmptr;
msg.msg_name = NULL;
msg.msg_namelen = 0;
struct iovec iov[1];
iov[0].iov_base = dataExtra;
iov[0].iov_len = dataExtraBytes;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
ssize_t n =recvmsg(fd, &msg, 0);
if (n<=0)
return(n);
if ( (cmptr = CMSG_FIRSTHDR(&msg)) != NULL
&& cmptr->cmsg_len == CMSG_LEN(sizeof(cf_int)*fdarraylen)
)
{
if (cmptr->cmsg_level != SOL_SOCKET)
{
//printf("control level != SOL_SOCKET");
return -1;
}
if (cmptr->cmsg_type != SCM_RIGHTS)
{
//err_quit("control type != SCM_RIGHTS");
return -2;
}
for(size_t i=0; i<fdarraylen; i++)
recvfdarray[i] =*( (cf_int *) (CMSG_DATA(cmptr)+sizeof(cf_int)*i) );
}
else
recvfdarray[0] = -1; // descriptor was not passed
return n;
}
} // namespace cf