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netmgr: actively close all sockets when shutting down server

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without this change, named could sometimes lag for a while on shutdown
while it waited for open TCP connections to time out.
This commit is contained in:
Witold Kręcicki
2019-11-22 14:13:19 +01:00
committed by Evan Hunt
parent 37354ee225
commit d6c5052f7e
3 changed files with 56 additions and 6 deletions
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25
lib/isc/netmgr/netmgr-int.h
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@@ -116,12 +116,9 @@ typedef enum isc__netievent_type {
netievent_tcpstoplisten,
netievent_tcpclose,
netievent_closecb,
netievent_shutdown,
} isc__netievent_type;
typedef struct isc__netievent_stop {
isc__netievent_type type;
} isc__netievent_stop_t;
/*
* We have to split it because we can read and write on a socket
* simultaneously.
@@ -209,10 +206,13 @@ typedef struct isc__netievent {
isc__netievent_type type;
} isc__netievent_t;
typedef isc__netievent_t isc__netievent_shutdown_t;
typedef isc__netievent_t isc__netievent_stop_t;
typedef union {
isc__netievent_t ni;
isc__netievent_stop_t nis;
isc__netievent_udplisten_t niul;
isc__netievent__socket_t nis;
isc__netievent__socket_req_t nisr;
isc__netievent_udpsend_t nius;
} isc__netievent_storage_t;
@@ -523,6 +523,13 @@ isc__nm_async_closecb(isc__networker_t *worker, isc__netievent_t *ievent0);
* Issue a 'handle closed' callback on the socket.
*/
void
isc__nm_async_shutdown(isc__networker_t *worker, isc__netievent_t *ievent0);
/*%<
* Walk through all uv handles, get the underlying sockets and issue
* close on them.
*/
isc_result_t
isc__nm_udp_send(isc_nmhandle_t *handle, isc_region_t *region,
isc_nm_cb_t cb, void *cbarg);
@@ -555,6 +562,12 @@ isc__nm_tcp_close(isc_nmsocket_t *sock);
* Close a TCP socket.
*/
void
isc__nm_tcp_shutdown(isc_nmsocket_t *sock);
/*%<
* Called on shutdown to close and clean up a listening TCP socket.
*/
void
isc__nm_async_tcpconnect(isc__networker_t *worker, isc__netievent_t *ievent0);
void