Data Structures | Macros | Typedefs | Functions
netevent.h File Reference

This file contains event notification functions. More...

Data Structures

struct  comm_base
 A communication point dispatcher. More...
 
struct  comm_reply
 Reply information for a communication point. More...
 
struct  comm_point
 Communication point to the network These behaviours can be accomplished by setting the flags and passing return values from the callback. More...
 
struct  comm_timer
 Structure only for making timeout events. More...
 
struct  comm_signal
 Structure only for signal events. More...
 

Macros

#define NETEVENT_NOERROR   0
 to pass no_error to callback function
 
#define NETEVENT_CLOSED   -1
 to pass closed connection to callback function
 
#define NETEVENT_TIMEOUT   -2
 to pass timeout happened to callback function
 
#define NETEVENT_CAPSFAIL   -3
 to pass fallback from capsforID to callback function; 0x20 failed
 
#define NETEVENT_SLOW_ACCEPT_TIME   2000
 timeout to slow accept calls when not possible, in msec. More...
 

Typedefs

typedef int comm_point_callback_t (struct comm_point *, void *, int, struct comm_reply *)
 callback from communication point function type
 

Functions

struct comm_basecomm_base_create (int sigs)
 Create a new comm base. More...
 
struct comm_basecomm_base_create_event (struct event_base *base)
 Create comm base that uses the given event_base (underlying event mechanism pointer). More...
 
void comm_base_delete_no_base (struct comm_base *b)
 Delete comm base structure but not the underlying lib event base. More...
 
void comm_base_delete (struct comm_base *b)
 Destroy a comm base. More...
 
void comm_base_timept (struct comm_base *b, time_t **tt, struct timeval **tv)
 Obtain two pointers. More...
 
void comm_base_dispatch (struct comm_base *b)
 Dispatch the comm base events. More...
 
void comm_base_exit (struct comm_base *b)
 Exit from dispatch loop. More...
 
void comm_base_set_slow_accept_handlers (struct comm_base *b, void(*stop_accept)(void *), void(*start_accept)(void *), void *arg)
 Set the slow_accept mode handlers. More...
 
struct event_base * comm_base_internal (struct comm_base *b)
 Access internal data structure (for util/tube.c on windows) More...
 
struct comm_pointcomm_point_create_udp (struct comm_base *base, int fd, struct sldns_buffer *buffer, comm_point_callback_t *callback, void *callback_arg)
 Create an UDP comm point. More...
 
struct comm_pointcomm_point_create_udp_ancil (struct comm_base *base, int fd, struct sldns_buffer *buffer, comm_point_callback_t *callback, void *callback_arg)
 Create an UDP with ancillary data comm point. More...
 
struct comm_pointcomm_point_create_tcp (struct comm_base *base, int fd, int num, size_t bufsize, comm_point_callback_t *callback, void *callback_arg)
 Create a TCP listener comm point. More...
 
struct comm_pointcomm_point_create_tcp_out (struct comm_base *base, size_t bufsize, comm_point_callback_t *callback, void *callback_arg)
 Create an outgoing TCP commpoint. More...
 
struct comm_pointcomm_point_create_local (struct comm_base *base, int fd, size_t bufsize, comm_point_callback_t *callback, void *callback_arg)
 Create commpoint to listen to a local domain file descriptor. More...
 
struct comm_pointcomm_point_create_raw (struct comm_base *base, int fd, int writing, comm_point_callback_t *callback, void *callback_arg)
 Create commpoint to listen to a local domain pipe descriptor. More...
 
void comm_point_close (struct comm_point *c)
 Close a comm point fd. More...
 
void comm_point_delete (struct comm_point *c)
 Close and deallocate (free) the comm point. More...
 
void comm_point_send_reply (struct comm_reply *repinfo)
 Send reply. More...
 
void comm_point_drop_reply (struct comm_reply *repinfo)
 Drop reply. More...
 
int comm_point_send_udp_msg (struct comm_point *c, struct sldns_buffer *packet, struct sockaddr *addr, socklen_t addrlen)
 Send an udp message over a commpoint. More...
 
void comm_point_stop_listening (struct comm_point *c)
 Stop listening for input on the commpoint. More...
 
void comm_point_start_listening (struct comm_point *c, int newfd, int sec)
 Start listening again for input on the comm point. More...
 
void comm_point_listen_for_rw (struct comm_point *c, int rd, int wr)
 Stop listening and start listening again for reading or writing. More...
 
size_t comm_point_get_mem (struct comm_point *c)
 Get size of memory used by comm point. More...
 
struct comm_timercomm_timer_create (struct comm_base *base, void(*cb)(void *), void *cb_arg)
 create timer. More...
 
void comm_timer_disable (struct comm_timer *timer)
 disable timer. More...
 
void comm_timer_set (struct comm_timer *timer, struct timeval *tv)
 reset timevalue for timer. More...
 
void comm_timer_delete (struct comm_timer *timer)
 delete timer. More...
 
int comm_timer_is_set (struct comm_timer *timer)
 see if timeout has been set to a value. More...
 
size_t comm_timer_get_mem (struct comm_timer *timer)
 Get size of memory used by comm timer. More...
 
struct comm_signalcomm_signal_create (struct comm_base *base, void(*callback)(int, void *), void *cb_arg)
 Create a signal handler. More...
 
int comm_signal_bind (struct comm_signal *comsig, int sig)
 Bind signal struct to catch a signal. More...
 
void comm_signal_delete (struct comm_signal *comsig)
 Delete the signal communication point. More...
 
int comm_point_perform_accept (struct comm_point *c, struct sockaddr_storage *addr, socklen_t *addrlen)
 perform accept(2) with error checking. More...
 
void comm_point_udp_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_point_udp_ancil_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_point_tcp_accept_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_point_tcp_handle_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_timer_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_signal_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_point_local_handle_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_point_raw_handle_callback (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
void comm_base_handle_slow_accept (int fd, short event, void *arg)
 This routine is published for checks and tests, and is only used internally. More...
 
int tcp_connect_errno_needs_log (struct sockaddr *addr, socklen_t addrlen)
 see if errno for tcp connect has to be logged or not. More...
 

Detailed Description

This file contains event notification functions.

There are three types of communication points o UDP socket - perthread buffer. o TCP-accept socket - array of TCP-sockets, socketcount. o TCP socket - own buffer, parent-TCPaccept, read/write state, number of bytes read/written, timeout.

There are sockets aimed towards our clients and towards the internet. o frontside - aimed towards our clients, queries come in, answers back. o behind - aimed towards internet, to the authoritative DNS servers.

Several event types are available: o comm_base - for thread safety of the comm points, one per thread. o comm_point - udp and tcp networking, with callbacks. o comm_timer - a timeout with callback. o comm_signal - callbacks when signal is caught. o comm_reply - holds reply info during networking callback.

Macro Definition Documentation

#define NETEVENT_SLOW_ACCEPT_TIME   2000

timeout to slow accept calls when not possible, in msec.

Referenced by comm_point_perform_accept().

Function Documentation

struct comm_base* comm_base_create ( int  sigs)
read

Create a new comm base.

Parameters
sigs,:if true it attempts to create a default loop for signal handling.
Returns
: the new comm base. NULL on error.

References internal_base::base, comm_base_now(), comm_base::eb, internal_base::now, internal_base::secs, VERB_ALGO, and verbose().

struct comm_base* comm_base_create_event ( struct event_base *  base)
read

Create comm base that uses the given event_base (underlying event mechanism pointer).

Parameters
base,:underlying lib event base.
Returns
: the new comm base. NULL on error.

References internal_base::base, comm_base_now(), and comm_base::eb.

Referenced by libworker_setup().

void comm_base_delete_no_base ( struct comm_base b)

Delete comm base structure but not the underlying lib event base.

All comm points must have been deleted.

Parameters
b,:the base to delete.

References internal_base::base, comm_base::eb, log_err(), internal_base::slow_accept, and internal_base::slow_accept_enabled.

Referenced by libworker_delete_event().

void comm_base_delete ( struct comm_base b)
void comm_base_timept ( struct comm_base b,
time_t **  tt,
struct timeval **  tv 
)

Obtain two pointers.

The pointers never change (until base_delete()). The pointers point to time values that are updated regularly.

Parameters
b,:the communication base that will update the time values.
tt,:pointer to time in seconds is returned.
tv,:pointer to time in microseconds is returned.

References comm_base::eb, internal_base::now, replay_runtime::now_secs, replay_runtime::now_tv, and internal_base::secs.

Referenced by libworker_setup(), outside_network_create(), and worker_init().

void comm_base_dispatch ( struct comm_base b)

Dispatch the comm base events.

Parameters
b,:the communication to perform.

References internal_base::base, comm_base::eb, fatal_exit(), run_scenario(), replay_runtime::sig_cb, and replay_runtime::sig_cb_arg.

Referenced by libworker_dobg(), libworker_fg(), and worker_work().

void comm_base_exit ( struct comm_base b)

Exit from dispatch loop.

Parameters
b,:the communication base that is in dispatch().

References internal_base::base, comm_base::eb, replay_runtime::exit_cleanly, fatal_exit(), and log_err().

Referenced by do_reload(), do_stop(), libworker_do_cmd(), libworker_fg_done_cb(), libworker_handle_control_cmd(), worker_sighandler(), and worker_win_stop_cb().

void comm_base_set_slow_accept_handlers ( struct comm_base b,
void(*)(void *)  stop_accept,
void(*)(void *)  start_accept,
void *  arg 
)

Set the slow_accept mode handlers.

You can not provide these if you do not perform accept() calls.

Parameters
b,:comm base
stop_accept,:function that stops listening to accept fds.
start_accept,:function that resumes listening to accept fds.
arg,:callback arg to pass to the functions.

References comm_base::cb_arg, comm_base::start_accept, and comm_base::stop_accept.

struct event_base* comm_base_internal ( struct comm_base b)
read

Access internal data structure (for util/tube.c on windows)

Parameters
b,:comm base
Returns
event_base. Could be libevent, or internal event handler.

References internal_base::base, and comm_base::eb.

struct comm_point* comm_point_create_udp ( struct comm_base base,
int  fd,
struct sldns_buffer buffer,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create an UDP comm point.

Calls malloc. setups the structure with the parameters you provide.

Parameters
base,:in which base to alloc the commpoint.
fd: file descriptor of open UDP socket.
buffer,:shared buffer by UDP sockets from this thread.
callback,:callback function pointer.
callback_arg,:will be passed to your callback function.
Returns
: returns the allocated communication point. NULL on error. Sets timeout to NULL. Turns off TCP options.

References internal_event::base, internal_base::base, comm_point::buffer, comm_point::callback, comm_point::cb_arg, comm_point_delete(), comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, comm_point::inuse, log_err(), comm_point::max_tcp_count, comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

Referenced by listen_create(), and outside_network_create().

struct comm_point* comm_point_create_udp_ancil ( struct comm_base base,
int  fd,
struct sldns_buffer buffer,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create an UDP with ancillary data comm point.

Calls malloc. Uses recvmsg instead of recv to get udp message. setups the structure with the parameters you provide.

Parameters
base,:in which base to alloc the commpoint.
fd: file descriptor of open UDP socket.
buffer,:shared buffer by UDP sockets from this thread.
callback,:callback function pointer.
callback_arg,:will be passed to your callback function.
Returns
: returns the allocated communication point. NULL on error. Sets timeout to NULL. Turns off TCP options.

References internal_event::base, internal_base::base, comm_point::buffer, comm_point::callback, comm_point::cb_arg, comm_point_delete(), comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, comm_point::inuse, log_err(), comm_point::max_tcp_count, comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

Referenced by listen_create().

struct comm_point* comm_point_create_tcp ( struct comm_base base,
int  fd,
int  num,
size_t  bufsize,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create a TCP listener comm point.

Calls malloc. Setups the structure with the parameters you provide. Also Creates TCP Handlers, pre allocated for you. Uses the parameters you provide.

Parameters
base,:in which base to alloc the commpoint.
fd,:file descriptor of open TCP socket set to listen nonblocking.
num,:becomes max_tcp_count, the routine allocates that many tcp handler commpoints.
bufsize,:size of buffer to create for handlers.
callback,:callback function pointer for TCP handlers.
callback_arg,:will be passed to your callback function.
Returns
: returns the TCP listener commpoint. You can find the TCP handlers in the array inside the listener commpoint. returns NULL on error. Inits timeout to NULL. All handlers are on the free list.

References internal_event::base, internal_base::base, comm_point::buffer, comm_point::callback, comm_point::cb_arg, comm_point_create_tcp_handler(), comm_point_delete(), comm_point::comm_tcp_accept, comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::max_tcp_count, comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

Referenced by listen_create().

struct comm_point* comm_point_create_tcp_out ( struct comm_base base,
size_t  bufsize,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create an outgoing TCP commpoint.

No file descriptor is opened, left at -1.

Parameters
base,:in which base to alloc the commpoint.
bufsize,:size of buffer to create for handlers.
callback,:callback function pointer for the handler.
callback_arg,:will be passed to your callback function.
Returns
: the commpoint or NULL on error.

References internal_event::base, internal_base::base, comm_point::buffer, comm_reply::c, comm_point::callback, comm_point::cb_arg, comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::max_tcp_count, comm_point::repinfo, sldns_buffer_free(), sldns_buffer_new(), comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

Referenced by create_pending_tcp().

struct comm_point* comm_point_create_local ( struct comm_base base,
int  fd,
size_t  bufsize,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create commpoint to listen to a local domain file descriptor.

Parameters
base,:in which base to alloc the commpoint.
fd,:file descriptor of open AF_UNIX socket set to listen nonblocking.
bufsize,:size of buffer to create for handlers.
callback,:callback function pointer for the handler.
callback_arg,:will be passed to your callback function.
Returns
: the commpoint or NULL on error.

References internal_event::base, internal_base::base, comm_point::buffer, comm_point::callback, comm_point::cb_arg, comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::max_tcp_count, sldns_buffer_new(), comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

struct comm_point* comm_point_create_raw ( struct comm_base base,
int  fd,
int  writing,
comm_point_callback_t callback,
void *  callback_arg 
)
read

Create commpoint to listen to a local domain pipe descriptor.

Parameters
base,:in which base to alloc the commpoint.
fd,:file descriptor.
writing,:true if you want to listen to writes, false for reads.
callback,:callback function pointer for the handler.
callback_arg,:will be passed to your callback function.
Returns
: the commpoint or NULL on error.

References internal_event::base, internal_base::base, comm_point::buffer, comm_point::callback, comm_point::cb_arg, comm_point_raw_handle_callback(), comm_point::do_not_close, comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::max_tcp_count, comm_point::tcp_byte_count, comm_point::tcp_check_nb_connect, comm_point::tcp_do_close, comm_point::tcp_do_toggle_rw, comm_point::tcp_free, comm_point::tcp_handlers, comm_point::tcp_is_reading, comm_point::tcp_parent, comm_point::timeout, and comm_point::type.

void comm_point_close ( struct comm_point c)
void comm_point_delete ( struct comm_point c)
void comm_point_send_reply ( struct comm_reply repinfo)
void comm_point_drop_reply ( struct comm_reply repinfo)

Drop reply.

Cleans up.

Parameters
repinfo,:The reply info copied from a commpoint callback call.

References comm_point::buffer, comm_reply::c, log_assert, log_info(), reclaim_tcp_handler(), sldns_buffer_free(), and comm_point::type.

Referenced by mesh_new_client(), mesh_state_cleanup(), and worker_handle_request().

int comm_point_send_udp_msg ( struct comm_point c,
struct sldns_buffer packet,
struct sockaddr *  addr,
socklen_t  addrlen 
)

Send an udp message over a commpoint.

Parameters
c,:commpoint to send it from.
packet,:what to send.
addr,:where to send it to.
addrlen,:length of addr.
Returns
: false on a failure.

References comm_point::fd, log_addr(), log_assert, log_err(), sldns_buffer_begin(), sldns_buffer_remaining(), udp_send_errno_needs_log(), VERB_OPS, and verbose().

Referenced by comm_point_send_reply(), comm_point_udp_callback(), and randomize_and_send_udp().

void comm_point_stop_listening ( struct comm_point c)

Stop listening for input on the commpoint.

No callbacks will happen.

Parameters
c,:commpoint to disable. The fd is not closed.

References internal_event::ev, comm_point::ev, comm_point::fd, log_err(), VERB_ALGO, and verbose().

void comm_point_start_listening ( struct comm_point c,
int  newfd,
int  sec 
)

Start listening again for input on the comm point.

Parameters
c,:commpoint to enable again.
newfd,:new fd, or -1 to leave fd be.
sec,:timeout in seconds, or -1 for no (change to the) timeout.

References internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::tcp_free, comm_point::tcp_is_reading, comm_point::timeout, comm_point::type, VERB_ALGO, and verbose().

void comm_point_listen_for_rw ( struct comm_point c,
int  rd,
int  wr 
)

Stop listening and start listening again for reading or writing.

Parameters
c,:commpoint
rd,:if true, listens for reading.
wr,:if true, listens for writing.

References internal_event::ev, comm_point::ev, comm_point::fd, log_err(), comm_point::timeout, VERB_ALGO, and verbose().

Referenced by ssl_handle_read(), and ssl_handle_write().

size_t comm_point_get_mem ( struct comm_point c)

Get size of memory used by comm point.

For TCP handlers this includes subhandlers. For UDP handlers, this does not include the (shared) UDP buffer.

Parameters
c,:commpoint.
Returns
size in bytes.

References comm_point::buffer, comm_point::ev, comm_point::max_tcp_count, sldns_buffer_capacity(), comm_point::tcp_handlers, comm_point::timeout, and comm_point::type.

struct comm_timer* comm_timer_create ( struct comm_base base,
void(*)(void *)  cb,
void *  cb_arg 
)
read

create timer.

Not active upon creation.

Parameters
base,:event handling base.
cb,:callback function: void myfunc(void* myarg);
cb_arg,:user callback argument.
Returns
: the new timer or NULL on error.

References internal_base::base, internal_timer::base, comm_timer::callback, fake_timer::cb, comm_timer::cb_arg, fake_timer::cb_arg, comm_timer_callback(), comm_base::eb, internal_timer::ev, comm_timer::ev_timer, fptr_ok, fptr_whitelist_comm_timer(), log_err(), fake_timer::next, fake_timer::runtime, and replay_runtime::timer_list.

Referenced by pending_tcp_query(), pending_udp_query(), worker_init(), and wsvc_setup_worker().

void comm_timer_disable ( struct comm_timer timer)

disable timer.

Stops callbacks from happening.

Parameters
timer,:to disable.

References internal_timer::enabled, fake_timer::enabled, internal_timer::ev, comm_timer::ev_timer, and log_info().

Referenced by comm_timer_delete(), comm_timer_set(), and outnet_udp_cb().

void comm_timer_set ( struct comm_timer timer,
struct timeval *  tv 
)
void comm_timer_delete ( struct comm_timer timer)
int comm_timer_is_set ( struct comm_timer timer)

see if timeout has been set to a value.

Parameters
timer,:the timer to examine.
Returns
: false if disabled or not set.

References internal_timer::enabled, and comm_timer::ev_timer.

size_t comm_timer_get_mem ( struct comm_timer timer)

Get size of memory used by comm timer.

Parameters
timer,:the timer to examine.
Returns
size in bytes.

Referenced by serviced_get_mem(), waiting_tcp_get_mem(), and waiting_udp_get_mem().

struct comm_signal* comm_signal_create ( struct comm_base base,
void(*)(int, void *)  callback,
void *  cb_arg 
)
read

Create a signal handler.

Call signal_bind() later to bind to a signal.

Parameters
base,:communication base to use.
callback,:called when signal is caught.
cb_arg,:user argument to callback
Returns
: the signal struct or NULL on error.

References comm_signal::base, comm_signal::callback, replay_runtime::cb_arg, comm_signal::cb_arg, comm_signal::ev_signal, log_err(), replay_runtime::sig_cb, and replay_runtime::sig_cb_arg.

Referenced by worker_init().

int comm_signal_bind ( struct comm_signal comsig,
int  sig 
)

Bind signal struct to catch a signal.

A signle comm_signal can be bound to multiple signals, calling comm_signal_bind multiple times.

Parameters
comsig,:the communication point, with callback information.
sig,:signal number.
Returns
: true on success. false on error.

References internal_base::base, comm_signal::base, comm_base::eb, internal_signal::ev, comm_signal::ev_signal, log_assert, log_err(), and internal_signal::next.

void comm_signal_delete ( struct comm_signal comsig)

Delete the signal communication point.

Parameters
comsig,:to delete.

References internal_signal::ev, comm_signal::ev_signal, and internal_signal::next.

Referenced by worker_delete().

int comm_point_perform_accept ( struct comm_point c,
struct sockaddr_storage *  addr,
socklen_t *  addrlen 
)

perform accept(2) with error checking.

Parameters
c,:commpoint with accept fd.
addr,:remote end returned here.
addrlen,:length of remote end returned here.
Returns
new fd, or -1 on error. if -1, error message has been printed if necessary, simply drop out of the reading handler.

References internal_event::base, internal_base::base, comm_base::cb_arg, comm_base_handle_slow_accept(), comm_base::eb, internal_event::ev, comm_point::ev, comm_point::fd, fd_set_nonblock(), fptr_ok, fptr_whitelist_stop_accept(), log_addr(), log_err(), NETEVENT_SLOW_ACCEPT_TIME, internal_base::slow_accept, internal_base::slow_accept_enabled, comm_base::stop_accept, VERB_ALGO, and verbose().

Referenced by comm_point_tcp_accept_callback().

void comm_point_udp_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for udp comm point.

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

References comm_reply::addr, comm_reply::addrlen, internal_event::base, comm_point::buffer, comm_reply::c, comm_point::callback, comm_point::cb_arg, comm_base_now(), comm_point_send_udp_msg(), comm_point::comm_udp, comm_point::ev, comm_point::fd, fptr_ok, fptr_whitelist_comm_point(), log_assert, log_err(), NETEVENT_NOERROR, NUM_UDP_PER_SELECT, sldns_buffer_begin(), sldns_buffer_clear(), sldns_buffer_flip(), sldns_buffer_remaining(), sldns_buffer_skip(), comm_reply::srctype, and comm_point::type.

void comm_point_udp_ancil_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for udp ancillary data comm point.

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

References comm_reply::addr, comm_reply::addrlen, internal_event::base, comm_point::buffer, comm_reply::c, comm_point::callback, comm_point::cb_arg, comm_base_now(), comm_point_send_udp_msg_if(), comm_point::comm_udp, comm_point::ev, fatal_exit(), comm_point::fd, fptr_ok, fptr_whitelist_comm_point(), log_assert, log_err(), NETEVENT_NOERROR, NUM_UDP_PER_SELECT, comm_reply::pktinfo, sldns_buffer_begin(), sldns_buffer_clear(), sldns_buffer_flip(), sldns_buffer_remaining(), sldns_buffer_skip(), comm_reply::srctype, comm_point::type, VERB_ALGO, and verbosity.

void comm_point_tcp_accept_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for tcp accept comm point

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

References comm_reply::addr, internal_event::base, comm_base_now(), comm_point_close(), comm_point_perform_accept(), comm_point::comm_ssl_shake_read, comm_point::comm_tcp_accept, comm_point::ev, incoming_ssl_fd(), log_assert, log_info(), log_warn(), comm_point::repinfo, setup_tcp_handler(), comm_point::ssl, comm_point::tcp_free, and comm_point::type.

void comm_point_tcp_handle_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for tcp data comm point

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

References internal_event::base, comm_point::callback, comm_point::cb_arg, comm_base_now(), comm_point_tcp_handle_read(), comm_point_tcp_handle_write(), comm_point::comm_tcp, comm_point::ev, fptr_ok, fptr_whitelist_comm_point(), log_assert, log_err(), NETEVENT_CLOSED, NETEVENT_TIMEOUT, reclaim_tcp_handler(), comm_point::tcp_do_close, comm_point::type, VERB_QUERY, and verbose().

void comm_timer_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for timer comm.

Parameters
fd,:file descriptor (always -1).
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_timer structure.

Referenced by comm_timer_create(), comm_timer_set(), and fptr_whitelist_event().

void comm_signal_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

handle libevent callback for signal comm.

Parameters
fd,:file descriptor (used for the signal number).
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the internal commsignal structure.

References comm_signal::base, comm_signal::callback, comm_signal::cb_arg, comm_base_now(), fptr_ok, and fptr_whitelist_comm_signal().

void comm_point_local_handle_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

libevent callback for AF_UNIX fds

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

References internal_event::base, comm_point::callback, comm_point::cb_arg, comm_base_now(), comm_point::comm_local, comm_point_tcp_handle_read(), comm_point::ev, fptr_ok, fptr_whitelist_comm_point(), log_assert, log_err(), NETEVENT_CLOSED, and comm_point::type.

void comm_point_raw_handle_callback ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

libevent callback for raw fd access.

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

Referenced by comm_point_create_raw(), and fptr_whitelist_event().

void comm_base_handle_slow_accept ( int  fd,
short  event,
void *  arg 
)

This routine is published for checks and tests, and is only used internally.

libevent callback for timeout on slow accept.

Parameters
fd,:file descriptor.
event,:event bits from libevent: EV_READ, EV_WRITE, EV_SIGNAL, EV_TIMEOUT.
arg,:the comm_point structure.

Referenced by comm_point_perform_accept(), and fptr_whitelist_event().

int tcp_connect_errno_needs_log ( struct sockaddr *  addr,
socklen_t  addrlen 
)

see if errno for tcp connect has to be logged or not.

This uses errno

References udp_send_errno_needs_log().

Referenced by outnet_tcp_take_into_use().