OS Manuals

/usr/bin/dnstcpbench

PowerDNS dnstcpbench tool

From pdns-5.3-tool-dnstcpbench 5.3.14-r0 (enterprise-packages), captured 2026-11-08 by running dnstcpbench --help (exit 0). permalink

Syntax: dnstcpbench REMOTE [PORT] < QUERIES
Where QUERIES is one query per line, format: qname qtype, just 1 space
Allowed options:
  -h [ --help ]            produce help message
  --version                print version number
  -v [ --verbose ]         be verbose
  -u [ --udp-first ]       try UDP first
  -f [ --file ] arg        source file - if not specified, defaults to stdin
  --tcp-no-delay arg (=1)  use TCP_NODELAY socket option
  --timeout-msec arg (=10) wait for this amount of milliseconds for an answer
  --workers arg (=100)     number of parallel workers
Options (7)
OptionDescriptionSource
-h, --helpProvide a helpful message.help + man
--versionprint version numberhelp
-v, --verboseBe wordy on what the program is doing.help + man
-u, --udp-firstAttempt resolution via UDP first, only do TCP if truncated answer is received.help + man
-fsource file - if not specified, defaults to stdinhelp
--tcp-no-delay arguse TCP_NODELAY socket optionhelp
--workers argnumber of parallel workershelp

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.