Cuong Manh Le ebcc545547 all: improving DoH query performance ...

Previously, for each DoH query, we use the net/http default transport
with DialContext function re-assigned. This has some problems:

 - The first query to server will be slow.
 - Using the default transport for all upstreams can have race condition
   in case of multiple queries to multiple DoH upstreams

This commit fixes those issues, by initializing a separate transport for
each DoH upstream, the warming up the transport by doing a test query.
Later queries can take the advantage and re-use the connection.

2023-01-20 21:32:14 +07:00

..

ctrld

all: improving DoH query performance

2023-01-20 21:32:14 +07:00