Github user masaori335 commented on the pull request:
https://github.com/apache/trafficserver/pull/454#issuecomment-182200775
@bryancall It looks good. But it totally needs 3 macros like below as far
as I tried.
```
#define DebugHttp2Con(ua_session, fmt, ...) \
DebugSsn(ua_session, "http2_con", "[%" PRId64 "] " fmt,
ua_session->connection_id(), __VA_ARGS__);
#define DebugHttp2StreamMsg(ua_session, stream_id, msg) \
DebugSsn(ua_session, "http2_stream", "[%" PRId64 "] [%u]" msg,
ua_session->connection_id(), stream_id);
#define DebugHttp2StreamFmt(ua_session, stream_id, fmt, ...) \
DebugSsn(ua_session, "http2_stream", "[%" PRId64 "] [%u]" fmt,
ua_session->connection_id(), stream_id, __VA_ARGS__);
```
Actually this is what we're doing in Http2ClientSession. See
[Http2ClientSession.cc#L34-L36](https://github.com/apache/trafficserver/blob/master/proxy/http2/Http2ClientSession.cc#L34-L36).
Is there better macros technics? Or is this just fine?
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