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Remove the limit on the number of simultaneous TCP queries

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There was an artificial limit of 23 on the number of simultaneous
pipelined queries in the single TCP connection.  The new network
managers is capable of handling "unlimited" (limited only by the TCP
read buffer size ) queries similar to "unlimited" handling of the DNS
queries receive over UDP.

Don't limit the number of TCP queries that we can process within a
single TCP read callback.
This commit is contained in:
Ondřej Surý
2022-01-27 10:08:06 +01:00
committed by Evan Hunt
parent 306a3c0803
commit 4f5b4662b6
2 changed files with 3 additions and 15 deletions
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10
lib/isc/netmgr/netmgr.c
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@@ -2335,10 +2335,8 @@ processbuffer(isc_nmsocket_t *sock) {
* timers. If we do have a full message, reset the timer.
*
* Stop reading if this is a client socket, or if the server socket
* has been set to sequential mode, or the number of queries we are
* processing simultaneously has reached the clients-per-connection
* limit. In this case we'll be called again later by
* isc__nm_resume_processing().
* has been set to sequential mode. In this case we'll be called again
* later by isc__nm_resume_processing().
*/
void
isc__nm_process_sock_buffer(isc_nmsocket_t *sock) {
@@ -2375,9 +2373,7 @@ isc__nm_process_sock_buffer(isc_nmsocket_t *sock) {
isc__nmsocket_timer_stop(sock);
if (atomic_load(&sock->client) ||
atomic_load(&sock->sequential) ||
ah >= STREAM_CLIENTS_PER_CONN)
{
atomic_load(&sock->sequential)) {
isc__nm_stop_reading(sock);
return;
}