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New version, with client socket closed detection

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This commit is contained in:
Massimiliano Pinto
2013-06-10 19:48:17 +02:00
parent ac08cb4368
commit b6411bf40a
2 changed files with 40 additions and 24 deletions
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62
gateway.c
View File

@ -58,11 +58,19 @@ static void signal_set (int sig, void (*handler)(int)) {
int handle_event_errors(DCB *dcb, int event) {
struct epoll_event ed;
MySQLProtocol *protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
fprintf(stderr, "#### Handle error function for %i\n", dcb->fd);
if (dcb) {
if (dcb->state == DCB_STATE_DISCONNECTED) {
return 1;
}
}
fprintf(stderr, "#### Handle error function\n");
#ifdef GW_EVENT_DEBUG
if (event != -1) {
fprintf(stderr, ">>>>>> DCB state %i, Protocol State %i: event %i, %i\n", dcb->state, dcb->proto_state, event & EPOLLERR, event & EPOLLHUP);
fprintf(stderr, ">>>>>> DCB state %i, Protocol State %i: event %i, %i\n", dcb->state, protocol->state, event & EPOLLERR, event & EPOLLHUP);
if(event & EPOLLHUP)
fprintf(stderr, "EPOLLHUP\n");
@ -80,27 +88,32 @@ int handle_event_errors(DCB *dcb, int event) {
}
#ifdef GW_EVENT_DEBUG
fprintf(stderr, "closing fd [%i], from events check and backend too [%i]\n", dcb->fd, &dcb->session->backends->fd);
fprintf(stderr, "closing fd [%i]=[%i], from events\n", dcb->fd, protocol->fd);
#endif
if (dcb->fd) {
close (dcb->fd);
//fprintf(stderr, "Client protocol dcb->protocol %p\n", dcb->protocol);
if(dcb) {
if (dcb->session) {
if (dcb->session->backends) {
gw_mysql_close((MySQLProtocol **)&dcb->session->backends->protocol);
}
}
free(dcb);
gw_mysql_close((MySQLProtocol **)&dcb->protocol);
fprintf(stderr, "Client protocol dcb->protocol %p\n", dcb->protocol);
dcb->state = DCB_STATE_DISCONNECTED;
if (dcb->session->backends->protocol != NULL) {
fprintf(stderr, "!!!!!! BAckend still open! dcb %p\n", dcb->session->backends->protocol);
gw_mysql_close((MySQLProtocol **)&dcb->session->backends->protocol);
}
close(dcb->fd);
}
free(dcb->session);
free(dcb);
}
}
int handle_event_errors_backend(DCB *dcb, int event) {
struct epoll_event ed;
struct epoll_event ed;
MySQLProtocol *protocol = DCB_PROTOCOL(dcb, MySQLProtocol);
fprintf(stderr, "#### Handle Backend error function\n");
fprintf(stderr, "#### Handle Backend error function for %i\n", dcb->fd);
#ifdef GW_EVENT_DEBUG
if (event != -1) {
@ -122,15 +135,16 @@ int handle_event_errors_backend(DCB *dcb, int event) {
}
#ifdef GW_EVENT_DEBUG
fprintf(stderr, "Backend closing fd [%i], from events check and backend too [%i]\n", dcb->fd);
fprintf(stderr, "Backend closing fd [%i]=%i, from events check\n", dcb->fd, protocol->fd);
#endif
if (dcb->fd) {
close (dcb->fd);
if(dcb) {
free(dcb);
}
dcb->state = DCB_STATE_DISCONNECTED;
fprintf(stderr, "Freeing backend MySQL conn %p, %p\n", dcb->protocol, &dcb->protocol);
gw_mysql_close((MySQLProtocol **)&dcb->protocol);
fprintf(stderr, "Freeing backend MySQL conn %p, %p\n", dcb->protocol, &dcb->protocol);
close(dcb->fd);
}
free(dcb);
}
}
@ -202,15 +216,15 @@ int main(int argc, char **argv) {
exit(EXIT_FAILURE);
}
#ifdef GW_EVENT_DEBUG
//#ifdef GW_EVENT_DEBUG
fprintf(stderr, "wake from epoll_wait, n. %i events\n", nfds);
#endif
//#endif
for (n = 0; n < nfds; ++n) {
DCB *dcb = (DCB *) (events[n].data.ptr);
#ifdef GW_EVENT_DEBUG
//#ifdef GW_EVENT_DEBUG
fprintf(stderr, "New event %i for socket %i is %i\n", n, dcb->fd, events[n].events);
if (events[n].events & EPOLLIN)
fprintf(stderr, "New event %i for socket %i is EPOLLIN\n", n, dcb->fd);
@ -219,7 +233,7 @@ int main(int argc, char **argv) {
if (events[n].events & EPOLLPRI)
fprintf(stderr, "New event %i for socket %i is EPOLLPRI\n", n, dcb->fd);
#endif
//#endif
if ((events[n].events & EPOLLIN) || (events[n].events & EPOLLPRI)) {
// now checking the listening socket
if (dcb->state == DCB_STATE_LISTENING) {
@ -242,8 +256,10 @@ int main(int argc, char **argv) {
}
if (events[n].events & (EPOLLERR | EPOLLHUP)) {
// error handling
(dcb->func).error(dcb, events[n].events);
if (dcb) free(dcb);
}
} // filedesc loop

2
gw_utils.c
View File

@ -171,7 +171,7 @@ int do_read_buffer(DCB *dcb, uint8_t *buffer) {
if (n == 0 & (errno==EOF)) {
fprintf(stderr, "ReadBuffer Socket EOF\n");
return -1;
return -2;
}
if (n < 0) {