MINOR: mux-h2/trace: report a few connection-level info during h2_init()
It is currently very difficult to match some H2 trace outputs against
some log extracts because there's no exactly equivalent info.
This patch tries to address this by adding a TRACE_USER() call in h2_init()
that is matched in h2_trace() to report:
- connection pointer and direction
- frontend's name or server's name
- transport layer and control layer (e.g. "SSL/tcpv4")
- source and/or destination depending on what is set
This now permits to get something like this at verbosity level complete:
<0>2021-06-16T18:30:19.810897+02:00 [00|h2|1|mux_h2.c:1006] new H2 connection : h2c=0x19fee50(F,PRF) : conn=0x7f373c026850(IN) fe=h2gw RAW/tcpv4 src=127.0.0.1:19540
<0>2021-06-16T18:30:19.810919+02:00 [00|h2|1|mux_h2.c:2731] rcvd H2 request : h2c=0x19fee50(F,FRH)
<0>2021-06-16T18:30:19.810998+02:00 [00|h2|1|mux_h2.c:1006] new H2 connection : h2c=0x1a04ee0(B,PRF) : conn=0x1a04ce0(OUT) sv=h2gw/s1 RAW/tcpv4 dst=127.0.0.1:4446
diff --git a/src/mux_h2.c b/src/mux_h2.c
index 1374cd7..79e5b3b 100644
--- a/src/mux_h2.c
+++ b/src/mux_h2.c
@@ -618,6 +618,9 @@
if (src->verbosity > H2_VERB_CLEAN) {
chunk_appendf(&trace_buf, " : h2c=%p(%c,%s)", h2c, conn_is_back(conn) ? 'B' : 'F', h2c_st_to_str(h2c->st0));
+ if (mask & H2_EV_H2C_NEW) // inside h2_init, otherwise it's hard to match conn & h2c
+ conn_append_debug_info(&trace_buf, conn, " : ");
+
if (h2c->errcode)
chunk_appendf(&trace_buf, " err=%s/%02x", h2_err_str(h2c->errcode), h2c->errcode);
@@ -1000,6 +1003,8 @@
conn->ctx = h2c;
+ TRACE_USER("new H2 connection", H2_EV_H2C_NEW, conn);
+
if (t)
task_queue(t);