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loop.c
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loop.c
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/*
Copyright (c) 2009-2019 Roger Light <[email protected]>
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
and Eclipse Distribution License v1.0 which accompany this distribution.
The Eclipse Public License is available at
https://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
https://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
Roger Light - initial implementation and documentation.
Tatsuzo Osawa - Add epoll.
*/
#include "config.h"
#ifndef WIN32
# define _GNU_SOURCE
#endif
#include <assert.h>
#ifndef WIN32
#ifdef WITH_EPOLL
#include <sys/epoll.h>
#define MAX_EVENTS 1000
#endif
#include <poll.h>
#include <unistd.h>
#else
#include <process.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#ifndef WIN32
# include <sys/socket.h>
#endif
#include <time.h>
#ifdef WITH_WEBSOCKETS
# include <libwebsockets.h>
#endif
#include "mosquitto_broker_internal.h"
#include "memory_mosq.h"
#include "packet_mosq.h"
#include "send_mosq.h"
#include "sys_tree.h"
#include "time_mosq.h"
#include "util_mosq.h"
extern bool flag_reload;
#ifdef WITH_PERSISTENCE
extern bool flag_db_backup;
#endif
extern bool flag_tree_print;
extern int run;
#ifdef WITH_EPOLL
static void loop_handle_reads_writes(struct mosquitto_db *db, mosq_sock_t sock, uint32_t events);
#else
static void loop_handle_reads_writes(struct mosquitto_db *db, struct pollfd *pollfds);
#endif
#ifdef WITH_WEBSOCKETS
static void temp__expire_websockets_clients(struct mosquitto_db *db)
{
struct mosquitto *context, *ctxt_tmp;
static time_t last_check = 0;
time_t now = mosquitto_time();
char *id;
if(now - last_check > 60){
HASH_ITER(hh_id, db->contexts_by_id, context, ctxt_tmp){
if(context->wsi && context->sock != INVALID_SOCKET){
if(context->keepalive && now - context->last_msg_in > (time_t)(context->keepalive)*3/2){
if(db->config->connection_messages == true){
if(context->id){
id = context->id;
}else{
id = "<unknown>";
}
if(db->config->connection_messages == true){
log__printf(NULL, MOSQ_LOG_NOTICE, "Client %s has exceeded timeout, disconnecting.", id);
}
}
/* Client has exceeded keepalive*1.5 */
do_disconnect(db, context, MOSQ_ERR_KEEPALIVE);
}
}
}
last_check = mosquitto_time();
}
}
#endif
int mosquitto_main_loop(struct mosquitto_db *db, mosq_sock_t *listensock, int listensock_count)
{
#ifdef WITH_SYS_TREE
time_t start_time = mosquitto_time();
#endif
#ifdef WITH_PERSISTENCE
time_t last_backup = mosquitto_time();
#endif
time_t now = 0;
int time_count;
int fdcount;
struct mosquitto *context, *ctxt_tmp;
#ifndef WIN32
sigset_t sigblock, origsig;
#endif
int i;
#ifdef WITH_EPOLL
int j;
struct epoll_event ev, events[MAX_EVENTS];
#else
struct pollfd *pollfds = NULL;
int pollfd_index;
int pollfd_max;
#endif
#ifdef WITH_BRIDGE
int rc;
int err;
socklen_t len;
#endif
time_t expiration_check_time = 0;
char *id;
#ifndef WIN32
sigemptyset(&sigblock);
sigaddset(&sigblock, SIGINT);
sigaddset(&sigblock, SIGTERM);
sigaddset(&sigblock, SIGUSR1);
sigaddset(&sigblock, SIGUSR2);
sigaddset(&sigblock, SIGHUP);
#endif
#ifndef WITH_EPOLL
#ifdef WIN32
pollfd_max = _getmaxstdio();
#else
pollfd_max = sysconf(_SC_OPEN_MAX);
#endif
pollfds = mosquitto__malloc(sizeof(struct pollfd)*pollfd_max);
if(!pollfds){
log__printf(NULL, MOSQ_LOG_ERR, "Error: Out of memory.");
return MOSQ_ERR_NOMEM;
}
#endif
if(db->config->persistent_client_expiration > 0){
expiration_check_time = time(NULL) + 3600;
}
#ifdef WITH_EPOLL
db->epollfd = 0;
if ((db->epollfd = epoll_create(MAX_EVENTS)) == -1) {
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll creating: %s", strerror(errno));
return MOSQ_ERR_UNKNOWN;
}
memset(&ev, 0, sizeof(struct epoll_event));
memset(&events, 0, sizeof(struct epoll_event)*MAX_EVENTS);
for(i=0; i<listensock_count; i++){
ev.data.fd = listensock[i];
ev.events = EPOLLIN;
if (epoll_ctl(db->epollfd, EPOLL_CTL_ADD, listensock[i], &ev) == -1) {
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll initial registering: %s", strerror(errno));
(void)close(db->epollfd);
db->epollfd = 0;
return MOSQ_ERR_UNKNOWN;
}
}
#ifdef WITH_BRIDGE
HASH_ITER(hh_sock, db->contexts_by_sock, context, ctxt_tmp){
if(context->bridge){
ev.data.fd = context->sock;
ev.events = EPOLLIN;
context->events = EPOLLIN;
if (epoll_ctl(db->epollfd, EPOLL_CTL_ADD, context->sock, &ev) == -1) {
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll initial registering bridge: %s", strerror(errno));
(void)close(db->epollfd);
db->epollfd = 0;
return MOSQ_ERR_UNKNOWN;
}
}
}
#endif
#endif
while(run){
context__free_disused(db);
#ifdef WITH_SYS_TREE
if(db->config->sys_interval > 0){
sys_tree__update(db, db->config->sys_interval, start_time);
}
#endif
#ifndef WITH_EPOLL
memset(pollfds, -1, sizeof(struct pollfd)*pollfd_max);
pollfd_index = 0;
for(i=0; i<listensock_count; i++){
pollfds[pollfd_index].fd = listensock[i];
pollfds[pollfd_index].events = POLLIN;
pollfds[pollfd_index].revents = 0;
pollfd_index++;
}
#endif
time_count = 0;
HASH_ITER(hh_sock, db->contexts_by_sock, context, ctxt_tmp){
if(time_count > 0){
time_count--;
}else{
time_count = 1000;
now = mosquitto_time();
}
context->pollfd_index = -1;
if(context->sock != INVALID_SOCKET){
#ifdef WITH_BRIDGE
if(context->bridge){
mosquitto__check_keepalive(db, context);
if(context->bridge->round_robin == false
&& context->bridge->cur_address != 0
&& context->bridge->primary_retry
&& now > context->bridge->primary_retry){
if(context->bridge->primary_retry_sock == INVALID_SOCKET){
rc = net__try_connect(context->bridge->addresses[0].address,
context->bridge->addresses[0].port,
&context->bridge->primary_retry_sock, NULL, false);
if(rc == 0){
COMPAT_CLOSE(context->bridge->primary_retry_sock);
context->bridge->primary_retry_sock = INVALID_SOCKET;
context->bridge->primary_retry = 0;
net__socket_close(db, context);
context->bridge->cur_address = 0;
}
}else{
len = sizeof(int);
if(!getsockopt(context->bridge->primary_retry_sock, SOL_SOCKET, SO_ERROR, (char *)&err, &len)){
if(err == 0){
COMPAT_CLOSE(context->bridge->primary_retry_sock);
context->bridge->primary_retry_sock = INVALID_SOCKET;
context->bridge->primary_retry = 0;
net__socket_close(db, context);
context->bridge->cur_address = context->bridge->address_count-1;
}else{
COMPAT_CLOSE(context->bridge->primary_retry_sock);
context->bridge->primary_retry_sock = INVALID_SOCKET;
context->bridge->primary_retry = now+5;
}
}else{
COMPAT_CLOSE(context->bridge->primary_retry_sock);
context->bridge->primary_retry_sock = INVALID_SOCKET;
context->bridge->primary_retry = now+5;
}
}
}
}
#endif
/* Local bridges never time out in this fashion. */
if(!(context->keepalive)
|| context->bridge
|| now - context->last_msg_in <= (time_t)(context->keepalive)*3/2){
if(db__message_write(db, context) == MOSQ_ERR_SUCCESS){
#ifdef WITH_EPOLL
if(context->current_out_packet || context->state == mosq_cs_connect_pending || context->ws_want_write){
if(!(context->events & EPOLLOUT)) {
ev.data.fd = context->sock;
ev.events = EPOLLIN | EPOLLOUT;
if(epoll_ctl(db->epollfd, EPOLL_CTL_ADD, context->sock, &ev) == -1) {
if((errno != EEXIST)||(epoll_ctl(db->epollfd, EPOLL_CTL_MOD, context->sock, &ev) == -1)) {
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll re-registering to EPOLLOUT: %s", strerror(errno));
}
}
context->events = EPOLLIN | EPOLLOUT;
}
context->ws_want_write = false;
}
else{
if(context->events & EPOLLOUT) {
ev.data.fd = context->sock;
ev.events = EPOLLIN;
if(epoll_ctl(db->epollfd, EPOLL_CTL_ADD, context->sock, &ev) == -1) {
if((errno != EEXIST)||(epoll_ctl(db->epollfd, EPOLL_CTL_MOD, context->sock, &ev) == -1)) {
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll re-registering to EPOLLIN: %s", strerror(errno));
}
}
context->events = EPOLLIN;
}
}
#else
pollfds[pollfd_index].fd = context->sock;
pollfds[pollfd_index].events = POLLIN;
pollfds[pollfd_index].revents = 0;
if(context->current_out_packet || context->state == mosq_cs_connect_pending || context->ws_want_write){
pollfds[pollfd_index].events |= POLLOUT;
context->ws_want_write = false;
}
context->pollfd_index = pollfd_index;
pollfd_index++;
#endif
}else{
do_disconnect(db, context, MOSQ_ERR_CONN_LOST);
}
}else{
/* Client has exceeded keepalive*1.5 */
do_disconnect(db, context, MOSQ_ERR_KEEPALIVE);
}
}
}
#ifdef WITH_BRIDGE
time_count = 0;
for(i=0; i<db->bridge_count; i++){
if(!db->bridges[i]) continue;
context = db->bridges[i];
if(context->sock == INVALID_SOCKET){
if(time_count > 0){
time_count--;
}else{
time_count = 1000;
now = mosquitto_time();
}
/* Want to try to restart the bridge connection */
if(!context->bridge->restart_t){
context->bridge->restart_t = now+context->bridge->restart_timeout;
context->bridge->cur_address++;
if(context->bridge->cur_address == context->bridge->address_count){
context->bridge->cur_address = 0;
}
}else{
if((context->bridge->start_type == bst_lazy && context->bridge->lazy_reconnect)
|| (context->bridge->start_type == bst_automatic && now > context->bridge->restart_t)){
#if defined(__GLIBC__) && defined(WITH_ADNS)
if(context->adns){
/* Connection attempted, waiting on DNS lookup */
rc = gai_error(context->adns);
if(rc == EAI_INPROGRESS){
/* Just keep on waiting */
}else if(rc == 0){
rc = bridge__connect_step2(db, context);
if(rc == MOSQ_ERR_SUCCESS){
#ifdef WITH_EPOLL
ev.data.fd = context->sock;
ev.events = EPOLLIN;
if(context->current_out_packet){
ev.events |= EPOLLOUT;
}
if(epoll_ctl(db->epollfd, EPOLL_CTL_ADD, context->sock, &ev) == -1) {
if((errno != EEXIST)||(epoll_ctl(db->epollfd, EPOLL_CTL_MOD, context->sock, &ev) == -1)) {
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll re-registering bridge: %s", strerror(errno));
}
}else{
context->events = ev.events;
}
#else
pollfds[pollfd_index].fd = context->sock;
pollfds[pollfd_index].events = POLLIN;
pollfds[pollfd_index].revents = 0;
if(context->current_out_packet){
pollfds[pollfd_index].events |= POLLOUT;
}
context->pollfd_index = pollfd_index;
pollfd_index++;
#endif
}else if(rc == MOSQ_ERR_CONN_PENDING){
context->bridge->restart_t = 0;
}else{
context->bridge->cur_address++;
if(context->bridge->cur_address == context->bridge->address_count){
context->bridge->cur_address = 0;
}
context->bridge->restart_t = 0;
}
}else{
/* Need to retry */
if(context->adns->ar_result){
freeaddrinfo(context->adns->ar_result);
}
mosquitto__free(context->adns);
context->adns = NULL;
context->bridge->restart_t = 0;
}
}else{
#ifdef WITH_EPOLL
/* clean any events triggered in previous connection */
context->events = 0;
#endif
rc = bridge__connect_step1(db, context);
if(rc){
context->bridge->cur_address++;
if(context->bridge->cur_address == context->bridge->address_count){
context->bridge->cur_address = 0;
}
}else{
/* Short wait for ADNS lookup */
context->bridge->restart_t = 1;
}
}
#else
{
rc = bridge__connect(db, context);
context->bridge->restart_t = 0;
if(rc == MOSQ_ERR_SUCCESS){
if(context->bridge->round_robin == false && context->bridge->cur_address != 0){
context->bridge->primary_retry = now + 5;
}
#ifdef WITH_EPOLL
ev.data.fd = context->sock;
ev.events = EPOLLIN;
if(context->current_out_packet){
ev.events |= EPOLLOUT;
}
if(epoll_ctl(db->epollfd, EPOLL_CTL_ADD, context->sock, &ev) == -1) {
if((errno != EEXIST)||(epoll_ctl(db->epollfd, EPOLL_CTL_MOD, context->sock, &ev) == -1)) {
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll re-registering bridge: %s", strerror(errno));
}
}else{
context->events = ev.events;
}
#else
pollfds[pollfd_index].fd = context->sock;
pollfds[pollfd_index].events = POLLIN;
pollfds[pollfd_index].revents = 0;
if(context->current_out_packet){
pollfds[pollfd_index].events |= POLLOUT;
}
context->pollfd_index = pollfd_index;
pollfd_index++;
#endif
}else{
context->bridge->cur_address++;
if(context->bridge->cur_address == context->bridge->address_count){
context->bridge->cur_address = 0;
}
}
}
#endif
}
}
}
}
#endif
now = time(NULL);
if(db->config->persistent_client_expiration > 0 && now > expiration_check_time){
HASH_ITER(hh_id, db->contexts_by_id, context, ctxt_tmp){
if(context->sock == INVALID_SOCKET && context->session_expiry_interval > 0 && context->session_expiry_interval != UINT32_MAX){
/* This is a persistent client, check to see if the
* last time it connected was longer than
* persistent_client_expiration seconds ago. If so,
* expire it and clean up.
*/
if(now > context->session_expiry_time){
if(context->id){
id = context->id;
}else{
id = "<unknown>";
}
log__printf(NULL, MOSQ_LOG_NOTICE, "Expiring persistent client %s due to timeout.", id);
G_CLIENTS_EXPIRED_INC();
context->session_expiry_interval = 0;
context__set_state(context, mosq_cs_expiring);
do_disconnect(db, context, MOSQ_ERR_SUCCESS);
}
}
}
expiration_check_time = time(NULL) + 3600;
}
#ifndef WIN32
sigprocmask(SIG_SETMASK, &sigblock, &origsig);
#ifdef WITH_EPOLL
fdcount = epoll_wait(db->epollfd, events, MAX_EVENTS, 100);
#else
fdcount = poll(pollfds, pollfd_index, 100);
#endif
sigprocmask(SIG_SETMASK, &origsig, NULL);
#else
fdcount = WSAPoll(pollfds, pollfd_index, 100);
#endif
#ifdef WITH_EPOLL
switch(fdcount){
case -1:
if(errno != EINTR){
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll waiting: %s.", strerror(errno));
}
break;
case 0:
break;
default:
for(i=0; i<fdcount; i++){
for(j=0; j<listensock_count; j++){
if (events[i].data.fd == listensock[j]) {
if (events[i].events & (EPOLLIN | EPOLLPRI)){
while((ev.data.fd = net__socket_accept(db, listensock[j])) != -1){
ev.events = EPOLLIN;
if (epoll_ctl(db->epollfd, EPOLL_CTL_ADD, ev.data.fd, &ev) == -1) {
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll accepting: %s", strerror(errno));
}
context = NULL;
HASH_FIND(hh_sock, db->contexts_by_sock, &(ev.data.fd), sizeof(mosq_sock_t), context);
if(!context) {
log__printf(NULL, MOSQ_LOG_ERR, "Error in epoll accepting: no context");
}
context->events = EPOLLIN;
}
}
break;
}
}
if (j == listensock_count) {
loop_handle_reads_writes(db, events[i].data.fd, events[i].events);
}
}
}
#else
if(fdcount == -1){
log__printf(NULL, MOSQ_LOG_ERR, "Error in poll: %s.", strerror(errno));
}else{
loop_handle_reads_writes(db, pollfds);
for(i=0; i<listensock_count; i++){
if(pollfds[i].revents & (POLLIN | POLLPRI)){
while(net__socket_accept(db, listensock[i]) != -1){
}
}
}
}
#endif
now = time(NULL);
session_expiry__check(db, now);
will_delay__check(db, now);
#ifdef WITH_PERSISTENCE
if(db->config->persistence && db->config->autosave_interval){
if(db->config->autosave_on_changes){
if(db->persistence_changes >= db->config->autosave_interval){
persist__backup(db, false);
db->persistence_changes = 0;
}
}else{
if(last_backup + db->config->autosave_interval < mosquitto_time()){
persist__backup(db, false);
last_backup = mosquitto_time();
}
}
}
#endif
#ifdef WITH_PERSISTENCE
if(flag_db_backup){
persist__backup(db, false);
flag_db_backup = false;
}
#endif
if(flag_reload){
log__printf(NULL, MOSQ_LOG_INFO, "Reloading config.");
config__read(db, db->config, true);
mosquitto_security_cleanup(db, true);
mosquitto_security_init(db, true);
mosquitto_security_apply(db);
log__close(db->config);
log__init(db->config);
flag_reload = false;
}
if(flag_tree_print){
sub__tree_print(db->subs, 0);
flag_tree_print = false;
}
#ifdef WITH_WEBSOCKETS
for(i=0; i<db->config->listener_count; i++){
/* Extremely hacky, should be using the lws provided external poll
* interface, but their interface has changed recently and ours
* will soon, so for now websockets clients are second class
* citizens. */
if(db->config->listeners[i].ws_context){
libwebsocket_service(db->config->listeners[i].ws_context, 0);
}
}
if(db->config->have_websockets_listener){
temp__expire_websockets_clients(db);
}
#endif
}
#ifdef WITH_EPOLL
(void) close(db->epollfd);
db->epollfd = 0;
#else
mosquitto__free(pollfds);
#endif
return MOSQ_ERR_SUCCESS;
}
void do_disconnect(struct mosquitto_db *db, struct mosquitto *context, int reason)
{
char *id;
#ifdef WITH_EPOLL
struct epoll_event ev;
#endif
#ifdef WITH_WEBSOCKETS
bool is_duplicate = false;
#endif
if(context->state == mosq_cs_disconnected){
return;
}
#ifdef WITH_WEBSOCKETS
if(context->wsi){
if(context->state == mosq_cs_duplicate){
is_duplicate = true;
}
if(context->state != mosq_cs_disconnecting && context->state != mosq_cs_disconnect_with_will){
context__set_state(context, mosq_cs_disconnect_ws);
}
if(context->wsi){
libwebsocket_callback_on_writable(context->ws_context, context->wsi);
}
if(context->sock != INVALID_SOCKET){
HASH_DELETE(hh_sock, db->contexts_by_sock, context);
#ifdef WITH_EPOLL
if (epoll_ctl(db->epollfd, EPOLL_CTL_DEL, context->sock, &ev) == -1) {
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll disconnecting websockets: %s", strerror(errno));
}
#endif
context->sock = INVALID_SOCKET;
context->pollfd_index = -1;
}
if(is_duplicate){
/* This occurs if another client is taking over the same client id.
* It is important to remove this from the by_id hash here, so it
* doesn't leave us with multiple clients in the hash with the same
* id. Websockets doesn't actually close the connection here,
* unlike for normal clients, which means there is extra time when
* there could be two clients with the same id in the hash. */
context__remove_from_by_id(db, context);
}
}else
#endif
{
if(db->config->connection_messages == true){
if(context->id){
id = context->id;
}else{
id = "<unknown>";
}
if(context->state != mosq_cs_disconnecting && context->state != mosq_cs_disconnect_with_will){
switch(reason){
case MOSQ_ERR_SUCCESS:
break;
case MOSQ_ERR_PROTOCOL:
log__printf(NULL, MOSQ_LOG_NOTICE, "Client %s disconnected due to protocol error.", id);
break;
case MOSQ_ERR_CONN_LOST:
log__printf(NULL, MOSQ_LOG_NOTICE, "Socket error on client %s, disconnecting.", id);
break;
case MOSQ_ERR_AUTH:
log__printf(NULL, MOSQ_LOG_NOTICE, "Client %s disconnected, no longer authorised.", id);
break;
case MOSQ_ERR_KEEPALIVE:
log__printf(NULL, MOSQ_LOG_NOTICE, "Client %s has exceeded timeout, disconnecting.", id);
break;
default:
log__printf(NULL, MOSQ_LOG_NOTICE, "Socket error on client %s, disconnecting.", id);
break;
}
}else{
log__printf(NULL, MOSQ_LOG_NOTICE, "Client %s disconnected.", id);
}
}
#ifdef WITH_EPOLL
if (context->sock != INVALID_SOCKET && epoll_ctl(db->epollfd, EPOLL_CTL_DEL, context->sock, &ev) == -1) {
if(db->config->connection_messages == true){
log__printf(NULL, MOSQ_LOG_DEBUG, "Error in epoll disconnecting: %s", strerror(errno));
}
}
#endif
context__disconnect(db, context);
}
}
#ifdef WITH_EPOLL
static void loop_handle_reads_writes(struct mosquitto_db *db, mosq_sock_t sock, uint32_t events)
#else
static void loop_handle_reads_writes(struct mosquitto_db *db, struct pollfd *pollfds)
#endif
{
struct mosquitto *context;
#ifndef WITH_EPOLL
struct mosquitto *ctxt_tmp;
#endif
int err;
socklen_t len;
#ifdef WITH_EPOLL
int i;
context = NULL;
HASH_FIND(hh_sock, db->contexts_by_sock, &sock, sizeof(mosq_sock_t), context);
if(!context) {
return;
}
for (i=0;i<1;i++) {
#else
HASH_ITER(hh_sock, db->contexts_by_sock, context, ctxt_tmp){
if(context->pollfd_index < 0){
continue;
}
assert(pollfds[context->pollfd_index].fd == context->sock);
#endif
#ifdef WITH_WEBSOCKETS
if(context->wsi){
struct lws_pollfd wspoll;
#ifdef WITH_EPOLL
wspoll.fd = context->sock;
wspoll.events = context->events;
wspoll.revents = events;
#else
wspoll.fd = pollfds[context->pollfd_index].fd;
wspoll.events = pollfds[context->pollfd_index].events;
wspoll.revents = pollfds[context->pollfd_index].revents;
#endif
#ifdef LWS_LIBRARY_VERSION_NUMBER
lws_service_fd(lws_get_context(context->wsi), &wspoll);
#else
lws_service_fd(context->ws_context, &wspoll);
#endif
continue;
}
#endif
#ifdef WITH_TLS
#ifdef WITH_EPOLL
if(events & EPOLLOUT ||
#else
if(pollfds[context->pollfd_index].revents & POLLOUT ||
#endif
context->want_write ||
(context->ssl && context->state == mosq_cs_new)){
#else
#ifdef WITH_EPOLL
if(events & EPOLLOUT){
#else
if(pollfds[context->pollfd_index].revents & POLLOUT){
#endif
#endif
if(context->state == mosq_cs_connect_pending){
len = sizeof(int);
if(!getsockopt(context->sock, SOL_SOCKET, SO_ERROR, (char *)&err, &len)){
if(err == 0){
context__set_state(context, mosq_cs_new);
#if defined(WITH_ADNS) && defined(WITH_BRIDGE)
if(context->bridge){
bridge__connect_step3(db, context);
continue;
}
#endif
}
}else{
do_disconnect(db, context, MOSQ_ERR_CONN_LOST);
continue;
}
}
if(packet__write(context)){
do_disconnect(db, context, MOSQ_ERR_CONN_LOST);
continue;
}
}
}
#ifdef WITH_EPOLL
context = NULL;
HASH_FIND(hh_sock, db->contexts_by_sock, &sock, sizeof(mosq_sock_t), context);
if(!context) {
return;
}
for (i=0;i<1;i++) {
#else
HASH_ITER(hh_sock, db->contexts_by_sock, context, ctxt_tmp){
if(context->pollfd_index < 0){
continue;
}
#endif
#ifdef WITH_WEBSOCKETS
if(context->wsi){
// Websocket are already handled above
continue;
}
#endif
#ifdef WITH_TLS
#ifdef WITH_EPOLL
if(events & EPOLLIN ||
#else
if(pollfds[context->pollfd_index].revents & POLLIN ||
#endif
(context->ssl && context->state == mosq_cs_new)){
#else
#ifdef WITH_EPOLL
if(events & EPOLLIN){
#else
if(pollfds[context->pollfd_index].revents & POLLIN){
#endif
#endif
do{
if(packet__read(db, context)){
do_disconnect(db, context, MOSQ_ERR_CONN_LOST);
continue;
}
}while(SSL_DATA_PENDING(context));
}else{
#ifdef WITH_EPOLL
if(events & (EPOLLERR | EPOLLHUP)){
#else
if(context->pollfd_index >= 0 && pollfds[context->pollfd_index].revents & (POLLERR | POLLNVAL | POLLHUP)){
#endif
do_disconnect(db, context, MOSQ_ERR_CONN_LOST);
continue;
}
}
}
}