Release v1.3.7

Enhancements

• Error responses delivered by the Datadog Agent are now logged. (#260)

Release v1.3.6

Fixes

• Setting any of the error, error.msg, error.stack, or error.type tags on a span now leads to a consistent set of tags for purposes of error tracking (#244).

Release v1.3.5

Fixes

• Spurious errors are no longer produced by nginx. #241 is fixed by #242.

Release v1.3.4

Other

• Library is now built on Ubuntu 18 instead of on Ubuntu 20, so older versions of glibc are supported.

Release v1.3.3

Other

• Information about the reason for a trace sampling decision is now propagated along the trace from service to service. This improves what is displayed in the ingestion control page.

Release v1.3.2

Features

• Introduce DD_TRACE_SAMPLE_RATE and DD_TRACE_RATE_LIMIT sampling controls.

Fixes

• The default logger now writes to standard error fewer times per log message,
  preventing interleaving of output.
  • Thanks to @aureplop for contributing.
• Improperly formatted trace IDs now cause trace context extraction to fail,
  instead of producing an invalid ID. (pull request)

Other

• The Datadog Agent can no longer override sampling decisions made on account
  of sampling rules. (pull request)
• Remove build dependency on zlib.
• Add reference documentation doc/*.md.

Release v1.3.1

Features

• upgrade opentracing to v1.6.0

Fixes

• allow origin header without requiring a sampling priority header
• all spans tagged with value of origin header
• catch runtime error when creating AgentWriter
• CMake static target used incorrect visibility

Other

• update project's code formatter and formatting scripts
• spelling corrections
• corrections to examples

Release v1.3.0

Features

• now using opentracing-cpp v1.6.0
• initial support for Windows / MSVC

Fixes

• changes to docs and examples contributed by @Tyler-2 @littldr and @ZStriker19 (thanks!)

Release v1.2.1

Fixes

• expose log_func tracer option to connect tracer's log to applications logging facility
• build errors under some clang configurations
• set -fPIC build flag for static library builds

Other

• docs improvements (thanks @MichaelCurrin!)

Release v1.2.0

Features

• tracer options are logged when initializing a tracer, can be disabled by setting DD_TRACE_STARTUP_LOGS=0

Fixes

• make http.url obfuscation behavior consistent with other tracers

Other

• build script updates
• dependency version-bumps
• minor improvements of examples