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Reuse TCP/IP socket connection and pipeline outgoing queries #147

Merged
merged 1 commit into from Aug 11, 2019
Merged

Reuse TCP/IP socket connection and pipeline outgoing queries #147

merged 1 commit into from Aug 11, 2019

Commits on Aug 11, 2019

  1. Reuse TCP/IP socket connection and pipeline outgoing queries 

    The TcpTransportExecutor will now keep the TCP/IP socket connection to
the DNS server open for a short period. Additional queries can reuse the
same socket connection and pipeline multiple queries over this single
socket. This avoids creating multiple socket resources for concurrent
requests and implies the TCP/IP connection overhead only applies once
instead of for each query. Among others, this helps avoiding excessive
resources and significantly improves query performance when using
multiple (concurrent) queries.

This implements RFC 7766 as per https://tools.ietf.org/html/rfc7766
    @clue
    clue committed Aug 11, 2019
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