1 /* IOHandler.c - IOMultiplexer
2 * Copyright (C) 2012 Philipp Kreil (pk910)
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include "IOHandler.h"
19 #include "IOHandler_SSL.h"
24 #define _WIN32_WINNT 0x501
34 #include <sys/socket.h>
35 #include <netinet/in.h>
36 #include <netinet/tcp.h>
40 #define EWOULDBLOCK EAGAIN
44 iohandler_log_callback *iolog_backend = NULL;
46 struct IODescriptor *first_descriptor = NULL;
47 struct IODescriptor *timer_priority = NULL;
50 static pthread_mutex_t io_thread_sync;
51 static pthread_mutex_t io_poll_sync;
54 void iohandler_log(enum IOLogType type, char *text, ...) {
56 char logBuf[MAXLOG+1];
59 va_start(arg_list, text);
60 pos = vsnprintf(logBuf, MAXLOG - 1, text, arg_list);
62 if (pos < 0 || pos > (MAXLOG - 1)) pos = MAXLOG - 1;
67 iolog_backend(type, logBuf);
71 extern struct IOEngine engine_select; /* select system call (should always be useable) */
72 extern struct IOEngine engine_kevent;
73 extern struct IOEngine engine_epoll;
74 extern struct IOEngine engine_win32;
76 struct IOEngine *engine = NULL;
78 static void iohandler_init_engine() {
80 IOTHREAD_MUTEX_INIT(io_thread_sync);
81 IOTHREAD_MUTEX_INIT(io_poll_sync);
84 if(!engine && engine_kevent.init && engine_kevent.init())
85 engine = &engine_kevent;
86 if(!engine && engine_epoll.init && engine_epoll.init())
87 engine = &engine_epoll;
88 if(!engine && engine_win32.init && engine_win32.init())
89 engine = &engine_win32;
92 if(engine_select.init())
93 engine = &engine_select;
95 iohandler_log(IOLOG_FATAL, "found no useable IO engine");
99 iohandler_log(IOLOG_DEBUG, "using %s IO engine", engine->name);
100 iohandler_ssl_init();
103 static void iohandler_append(struct IODescriptor *descriptor) {
104 IOSYNCHRONIZE(io_thread_sync);
105 struct timeval *timeout = ((descriptor->timeout.tv_sec || descriptor->timeout.tv_usec) ? &descriptor->timeout : NULL);
107 struct IODescriptor *iofd;
108 int set_priority = 1;
109 descriptor->timeout = *timeout;
111 iofd = timer_priority;
113 iofd = first_descriptor;
115 for(;;iofd = iofd->next) {
116 if(timeval_is_smaler(timeout, (&iofd->timeout))) {
117 descriptor->prev = iofd->prev;
118 descriptor->next = iofd;
120 iofd->prev->next = descriptor;
121 iofd->prev = descriptor;
123 timer_priority = descriptor;
126 if(iofd == timer_priority)
128 if(iofd->next == NULL) {
129 descriptor->next = NULL;
130 descriptor->prev = iofd;
131 iofd->next = descriptor;
133 timer_priority = descriptor;
138 descriptor->prev = NULL;
139 descriptor->next = NULL;
140 first_descriptor = descriptor;
141 timer_priority = descriptor;
145 descriptor->prev = NULL;
146 descriptor->next = first_descriptor;
148 first_descriptor->prev = descriptor;
149 first_descriptor = descriptor;
151 IODESYNCHRONIZE(io_thread_sync);
154 static void iohandler_remove(struct IODescriptor *descriptor, int engine_remove) {
155 //remove IODescriptor from the list
156 IOSYNCHRONIZE(io_thread_sync);
158 descriptor->prev->next = descriptor->next;
160 first_descriptor = descriptor->next;
162 descriptor->next->prev = descriptor->prev;
163 if(descriptor == timer_priority)
164 timer_priority = descriptor->next;
167 engine->remove(descriptor);
168 if(descriptor->readbuf.buffer)
169 free(descriptor->readbuf.buffer);
170 if(descriptor->writebuf.buffer)
171 free(descriptor->writebuf.buffer);
172 iohandler_log(IOLOG_DEBUG, "removed IODescriptor (%d) of type `%s`", descriptor->fd, iohandler_iotype_name(descriptor->type));
174 IODESYNCHRONIZE(io_thread_sync);
177 struct IODescriptor *iohandler_add(int sockfd, enum IOType type, struct timeval *timeout, iohandler_callback *callback) {
178 //just add a new IODescriptor
179 struct IODescriptor *descriptor = calloc(1, sizeof(*descriptor));
181 iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
184 descriptor->fd = (type == IOTYPE_STDIN ? fileno(stdin) : sockfd);
185 descriptor->type = type;
186 descriptor->state = (type == IOTYPE_STDIN ? IO_CONNECTED : IO_CLOSED);
187 descriptor->callback = callback;
189 descriptor->timeout = *timeout;
190 if(type != IOTYPE_TIMER) {
191 descriptor->readbuf.buffer = malloc(IO_READ_BUFLEN + 2);
192 descriptor->readbuf.bufpos = 0;
193 descriptor->readbuf.buflen = IO_READ_BUFLEN;
194 descriptor->writebuf.buffer = malloc(IO_READ_BUFLEN + 2);
195 descriptor->writebuf.bufpos = 0;
196 descriptor->writebuf.buflen = IO_READ_BUFLEN;
200 iohandler_init_engine();
205 engine->add(descriptor);
207 //add IODescriptor to the list
208 iohandler_append(descriptor);
210 iohandler_log(IOLOG_DEBUG, "added custom socket descriptor (%d) as type `%s`", sockfd, iohandler_iotype_name(type));
214 void iohandler_set_timeout(struct IODescriptor *descriptor, struct timeval *timeout) {
216 descriptor->prev->next = descriptor->next;
218 first_descriptor = descriptor->next;
220 descriptor->next->prev = descriptor->prev;
221 if(descriptor == timer_priority)
222 timer_priority = descriptor->next;
224 descriptor->timeout = *timeout;
226 descriptor->timeout.tv_sec = 0;
227 descriptor->timeout.tv_usec = 0;
229 iohandler_append(descriptor);
232 static void iohandler_increase_iobuf(struct IOBuffer *iobuf, size_t required) {
233 if(iobuf->buflen >= required) return;
234 char *new_buf = realloc(iobuf->buffer, required + 2);
236 iobuf->buffer = new_buf;
237 iobuf->buflen = required;
241 struct IODescriptor *iohandler_timer(struct timeval timeout, iohandler_callback *callback) {
242 struct IODescriptor *descriptor;
243 descriptor = iohandler_add(-1, IOTYPE_TIMER, &timeout, callback);
245 iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
248 iohandler_log(IOLOG_DEBUG, "added timer descriptor (sec: %d; usec: %d)", timeout.tv_sec, timeout.tv_usec);
252 struct IODescriptor *iohandler_connect(const char *hostname, unsigned int port, int ssl, const char *bindhost, iohandler_callback *callback) {
253 //non-blocking connect
255 struct addrinfo hints, *res;
256 struct sockaddr_in *ip4 = NULL;
257 struct sockaddr_in6 *ip6 = NULL;
259 struct sockaddr *dstaddr = NULL;
260 struct IODescriptor *descriptor;
263 iohandler_init_engine();
264 if(!engine) return NULL;
266 memset (&hints, 0, sizeof (hints));
267 hints.ai_family = PF_UNSPEC;
268 hints.ai_socktype = SOCK_STREAM;
269 hints.ai_flags |= AI_CANONNAME;
270 if ((result = getaddrinfo (hostname, NULL, &hints, &res))) {
271 iohandler_log(IOLOG_ERROR, "could not resolve %s to an IP address (%d)", hostname, result);
275 switch (res->ai_family) {
277 ip4 = (struct sockaddr_in *) res->ai_addr;
280 ip6 = (struct sockaddr_in6 *) res->ai_addr;
288 sockfd = socket(AF_INET6, SOCK_STREAM, 0);
290 iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
294 ip6->sin6_family = AF_INET6;
295 ip6->sin6_port = htons(port);
297 struct sockaddr_in6 *ip6vhost = NULL;
298 if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
300 switch (res->ai_family) {
302 ip6vhost = (struct sockaddr_in6 *) res->ai_addr;
310 ip6vhost->sin6_family = AF_INET6;
311 ip6vhost->sin6_port = htons(0);
312 bind(sockfd, (struct sockaddr*)ip6vhost, sizeof(*ip6vhost));
314 dstaddr = (struct sockaddr*)ip6;
315 dstaddrlen = sizeof(*ip6);
317 sockfd = socket(AF_INET, SOCK_STREAM, 0);
319 iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
323 ip4->sin_family = AF_INET;
324 ip4->sin_port = htons(port);
326 struct sockaddr_in *ip4vhost = NULL;
327 if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
329 switch (res->ai_family) {
331 ip4vhost = (struct sockaddr_in *) res->ai_addr;
339 ip4vhost->sin_family = AF_INET;
340 ip4vhost->sin_port = htons(0);
341 bind(sockfd, (struct sockaddr*)ip4vhost, sizeof(*ip4vhost));
343 dstaddr = (struct sockaddr*)ip4;
344 dstaddrlen = sizeof(*ip4);
349 #if defined(SO_NOSIGPIPE)
352 setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
355 signal(SIGPIPE, SIG_IGN);
358 //make sockfd unblocking
362 flags = fcntl(sockfd, F_GETFL);
363 fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
364 flags = fcntl(sockfd, F_GETFD);
365 fcntl(sockfd, F_SETFD, flags|FD_CLOEXEC);
368 /* I hope you're using the Win32 backend or something else that
369 * automatically marks the file descriptor non-blocking...
372 descriptor = iohandler_add(sockfd, IOTYPE_CLIENT, NULL, callback);
377 connect(sockfd, dstaddr, dstaddrlen); //returns EINPROGRESS here (nonblocking)
378 descriptor->state = IO_CONNECTING;
379 descriptor->ssl = (ssl ? 1 : 0);
380 descriptor->read_lines = 1;
381 engine->update(descriptor);
382 iohandler_log(IOLOG_DEBUG, "added client socket (%d) connecting to %s:%d", sockfd, hostname, port);
386 struct IODescriptor *iohandler_listen(const char *hostname, unsigned int port, iohandler_callback *callback) {
388 struct addrinfo hints, *res;
389 struct sockaddr_in *ip4 = NULL;
390 struct sockaddr_in6 *ip6 = NULL;
391 struct IODescriptor *descriptor;
395 iohandler_init_engine();
396 if(!engine) return NULL;
398 memset (&hints, 0, sizeof (hints));
399 hints.ai_family = PF_UNSPEC;
400 hints.ai_socktype = SOCK_STREAM;
401 hints.ai_flags |= AI_CANONNAME;
402 if (getaddrinfo (hostname, NULL, &hints, &res)) {
406 switch (res->ai_family) {
408 ip4 = (struct sockaddr_in *) res->ai_addr;
411 ip6 = (struct sockaddr_in6 *) res->ai_addr;
419 sockfd = socket(AF_INET6, SOCK_STREAM, 0);
420 if(sockfd == -1) return NULL;
423 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
425 ip6->sin6_family = AF_INET6;
426 ip6->sin6_port = htons(port);
428 bind(sockfd, (struct sockaddr*)ip6, sizeof(*ip6));
430 sockfd = socket(AF_INET, SOCK_STREAM, 0);
431 if(sockfd == -1) return NULL;
434 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
436 ip4->sin_family = AF_INET;
437 ip4->sin_port = htons(port);
439 bind(sockfd, (struct sockaddr*)ip4, sizeof(*ip4));
444 #if defined(SO_NOSIGPIPE)
447 setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
450 signal(SIGPIPE, SIG_IGN);
453 //make sockfd unblocking
457 flags = fcntl(sockfd, F_GETFL);
458 fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
459 flags = fcntl(sockfd, F_GETFD);
460 fcntl(sockfd, F_SETFD, flags|FD_CLOEXEC);
463 /* I hope you're using the Win32 backend or something else that
464 * automatically marks the file descriptor non-blocking...
467 descriptor = iohandler_add(sockfd, IOTYPE_SERVER, NULL, callback);
473 descriptor->state = IO_LISTENING;
474 engine->update(descriptor);
475 iohandler_log(IOLOG_DEBUG, "added server socket (%d) listening on %s:%d", sockfd, hostname, port);
479 void iohandler_write(struct IODescriptor *iofd, const char *line) {
480 size_t linelen = strlen(line);
481 iohandler_send(iofd, line, linelen);
484 void iohandler_send(struct IODescriptor *iofd, const char *data, size_t datalen) {
485 if(iofd->type == IOTYPE_TIMER || iofd->state == IO_CLOSED) {
486 iohandler_log(IOLOG_ERROR, "could not write to socket (%s)", (iofd->type == IOTYPE_TIMER ? "IOTYPE_TIMER" : "IO_CLOSED"));
489 iohandler_log(IOLOG_DEBUG, "add %d to writebuf (fd: %d): %s", datalen, iofd->fd, data);
490 if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
491 iohandler_log(IOLOG_DEBUG, "increase writebuf (curr: %d) to %d (+%d bytes)", iofd->writebuf.buflen, iofd->writebuf.bufpos + datalen, (iofd->writebuf.bufpos + datalen - iofd->writebuf.buflen));
492 iohandler_increase_iobuf(&iofd->writebuf, iofd->writebuf.bufpos + datalen);
493 if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
494 iohandler_log(IOLOG_ERROR, "increase writebuf (curr: %d) to %d (+%d bytes) FAILED", iofd->writebuf.buflen, iofd->writebuf.bufpos + datalen, (iofd->writebuf.bufpos + datalen - iofd->writebuf.buflen));
498 memcpy(iofd->writebuf.buffer + iofd->writebuf.bufpos, data, datalen);
499 iofd->writebuf.bufpos += datalen;
500 engine->update(iofd);
503 void iohandler_printf(struct IODescriptor *iofd, const char *text, ...) {
505 char sendBuf[IO_LINE_LEN];
508 va_start(arg_list, text);
509 pos = vsnprintf(sendBuf, IO_LINE_LEN - 2, text, arg_list);
511 if (pos < 0 || pos > (IO_LINE_LEN - 2)) pos = IO_LINE_LEN - 2;
513 sendBuf[pos+1] = '\0';
514 iohandler_send(iofd, sendBuf, pos+1);
517 static int iohandler_try_write(struct IODescriptor *iofd) {
518 if(!iofd->writebuf.bufpos) return 0;
519 iohandler_log(IOLOG_DEBUG, "write writebuf (%d bytes) to socket (fd: %d)", iofd->writebuf.bufpos, iofd->fd);
522 res = iohandler_ssl_write(iofd, iofd->writebuf.buffer, iofd->writebuf.bufpos);
524 res = send(iofd->fd, iofd->writebuf.buffer, iofd->writebuf.bufpos, 0);
526 if (errno != EAGAIN && errno != EWOULDBLOCK)
527 iohandler_log(IOLOG_ERROR, "could not write to socket (fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
531 iofd->writebuf.bufpos -= res;
532 if(iofd->state != IO_CLOSED)
533 engine->update(iofd);
538 void iohandler_close(struct IODescriptor *iofd) {
539 int engine_remove = 1;
540 iofd->state = IO_CLOSED;
541 if(iofd->writebuf.bufpos) {
542 //try to send everything before closing
546 flags = fcntl(iofd->fd, F_GETFL);
547 fcntl(iofd->fd, F_SETFL, flags & ~O_NONBLOCK);
548 flags = fcntl(iofd->fd, F_GETFD);
549 fcntl(iofd->fd, F_SETFD, flags|FD_CLOEXEC);
553 engine->remove(iofd);
555 iohandler_try_write(iofd);
559 iohandler_ssl_disconnect(iofd);
560 if(iofd->type == IOTYPE_SERVER || iofd->type == IOTYPE_CLIENT || iofd->type == IOTYPE_STDIN)
562 iohandler_remove(iofd, engine_remove);
565 void iohandler_update(struct IODescriptor *iofd) {
566 iohandler_log(IOLOG_DEBUG, "external call to iohandler_update (fd: %d)", iofd->fd);
567 engine->update(iofd);
570 static void iohandler_trigger_event(struct IOEvent *event) {
571 if(!event->iofd->callback) return;
572 iohandler_log(IOLOG_DEBUG, "triggering event (%s) for %s (fd: %d)", iohandler_ioeventtype_name(event->type), iohandler_iotype_name(event->iofd->type), event->iofd->fd);
573 event->iofd->callback(event);
576 void iohandler_events(struct IODescriptor *iofd, int readable, int writeable) {
577 struct IOEvent callback_event;
578 callback_event.type = IOEVENT_IGNORE;
579 callback_event.iofd = iofd;
580 switch(iofd->state) {
582 if(!readable && !writeable) {
583 callback_event.type = IOEVENT_SSLFAILED;
584 iofd->state = IO_CLOSED;
585 engine->update(iofd);
587 iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_client_handshake for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
588 iohandler_ssl_client_handshake(iofd);
592 if(iofd->type == IOTYPE_TIMER)
593 callback_event.type = IOEVENT_TIMEOUT;
597 callback_event.data.accept_fd = accept(iofd->fd, NULL, 0);
598 if(callback_event.data.accept_fd < 0) {
599 iohandler_log(IOLOG_ERROR, "could not accept client (server fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
601 callback_event.type = IOEVENT_ACCEPT;
605 if(readable) { //could not connect
606 callback_event.type = IOEVENT_NOTCONNECTED;
608 //arglen = sizeof(callback_event.data.errid);
609 //if (getsockopt(iofd->fd, SOL_SOCKET, SO_ERROR, &callback_event.data.errid, &arglen) < 0)
610 // callback_event.data.errid = errno;
611 iofd->state = IO_CLOSED;
612 engine->update(iofd);
613 } else if(writeable) {
614 if(iofd->ssl && !iofd->ssl_active) {
615 iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_connect for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
616 iohandler_ssl_connect(iofd);
619 callback_event.type = IOEVENT_CONNECTED;
620 iofd->state = IO_CONNECTED;
621 engine->update(iofd);
626 if(iofd->read_lines) {
630 bytes = iohandler_ssl_read(iofd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
632 if(iofd->type == IOTYPE_STDIN)
636 bytes = read(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
639 bytes = recv(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos, 0);
642 if (errno != EAGAIN || errno != EWOULDBLOCK) {
643 iofd->state = IO_CLOSED;
644 engine->update(iofd);
645 callback_event.type = IOEVENT_CLOSED;
646 callback_event.data.errid = errno;
649 int i, used_bytes = 0;
650 iohandler_log(IOLOG_DEBUG, "received %d bytes (fd: %d). readbuf position: %d", bytes, iofd->fd, iofd->readbuf.bufpos);
651 iofd->readbuf.bufpos += bytes;
652 callback_event.type = IOEVENT_RECV;
653 for(i = 0; i < iofd->readbuf.bufpos; i++) {
654 if(iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] == '\n')
655 iofd->readbuf.buffer[i] = 0;
656 else if(iofd->readbuf.buffer[i] == '\n' || iofd->readbuf.buffer[i] == '\r') {
657 iofd->readbuf.buffer[i] = 0;
658 callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
659 iohandler_log(IOLOG_DEBUG, "parsed line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
661 iohandler_trigger_event(&callback_event);
662 } else if(i + 1 - used_bytes >= IO_LINE_LEN) { //512 max
663 iofd->readbuf.buffer[i] = 0;
664 callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
665 iohandler_log(IOLOG_DEBUG, "parsed and stripped line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
666 for(; i < iofd->readbuf.bufpos; i++) { //skip the rest of the line
667 if(iofd->readbuf.buffer[i] == '\n' || (iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] != '\n')) {
672 iohandler_trigger_event(&callback_event);
676 if(used_bytes == iofd->readbuf.bufpos) {
677 iofd->readbuf.bufpos = 0;
678 iohandler_log(IOLOG_DEBUG, "readbuf fully processed (set buffer position to 0)");
680 iohandler_log(IOLOG_DEBUG, "readbuf rest: %d bytes (used %d bytes)", iofd->readbuf.bufpos - used_bytes, used_bytes);
681 memmove(iofd->readbuf.buffer, iofd->readbuf.buffer + used_bytes, iofd->readbuf.bufpos - used_bytes);
682 iofd->readbuf.bufpos -= used_bytes;
685 callback_event.type = IOEVENT_IGNORE;
688 callback_event.type = IOEVENT_READABLE;
692 bytes = iohandler_try_write(iofd);
694 iofd->state = IO_CLOSED;
695 engine->update(iofd);
696 callback_event.type = IOEVENT_CLOSED;
697 callback_event.data.errid = errno;
702 if(callback_event.type == IOEVENT_IGNORE && !readable && !writeable)
703 callback_event.type = IOEVENT_TIMEOUT;
704 if(callback_event.type != IOEVENT_IGNORE)
705 iohandler_trigger_event(&callback_event);
708 void iohandler_poll() {
710 IOSYNCHRONIZE(io_poll_sync); //quite senceless multithread support... better support will follow
711 struct timeval timeout;
712 timeout.tv_sec = IO_MAX_TIMEOUT;
714 engine->loop(&timeout);
715 IODESYNCHRONIZE(io_poll_sync);
719 //debugging functions
720 char *iohandler_iotype_name(enum IOType type) {
723 return "IOTYPE_UNKNOWN";
725 return "IOTYPE_SERVER";
727 return "IOTYPE_CLIENT";
729 return "IOTYPE_STDIN";
731 return "IOTYPE_TIMER";
733 return "(UNDEFINED)";
737 char *iohandler_iostatus_name(enum IOStatus status) {
742 return "IO_LISTENING";
744 return "IO_CONNECTING";
746 return "IO_CONNECTED";
750 return "(UNDEFINED)";
754 char *iohandler_ioeventtype_name(enum IOEventType type) {
757 return "IOEVENT_IGNORE";
758 case IOEVENT_READABLE:
759 return "IOEVENT_READABLE";
761 return "IOEVENT_RECV";
762 case IOEVENT_CONNECTED:
763 return "IOEVENT_CONNECTED";
764 case IOEVENT_NOTCONNECTED:
765 return "IOEVENT_NOTCONNECTED";
767 return "IOEVENT_CLOSED";
769 return "IOEVENT_ACCEPT";
770 case IOEVENT_TIMEOUT:
771 return "IOEVENT_TIMEOUT";
773 return "(UNDEFINED)";