# HG changeset patch
# User Vladimir Homutov <vl@nginx.com>
# Date 1604676091 -10800
# Node ID 8550b91e8e35a1d507838a10a1b60ea9089a249b
# Parent  183275308d9a4a02fb49bc942561ba80c35026a7
QUIC: added proper logging of special values.

A number of unsigned variables has a special value, usually -1 or some maximum,
which produces huge numeric value in logs and makes them hard to read.

In order to distinguish such values in log, they are casted to the signed type
and printed as literal '-1'.

diff -r 183275308d9a -r 8550b91e8e35 src/event/ngx_event_quic.c
--- a/src/event/ngx_event_quic.c	Mon Nov 02 17:38:11 2020 +0000
+++ b/src/event/ngx_event_quic.c	Fri Nov 06 18:21:31 2020 +0300
@@ -1020,7 +1020,7 @@
     qc->congestion.window = ngx_min(10 * qc->tp.max_udp_payload_size,
                                     ngx_max(2 * qc->tp.max_udp_payload_size,
                                             14720));
-    qc->congestion.ssthresh = NGX_MAX_SIZE_T_VALUE;
+    qc->congestion.ssthresh = (size_t) -1;
     qc->congestion.recovery_start = ngx_current_msec;
 
     if (ngx_quic_new_dcid(c, qc, &pkt->dcid) != NGX_OK) {
@@ -2572,8 +2572,8 @@
     ctx = ngx_quic_get_send_ctx(c->quic, pkt->level);
 
     ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic ngx_quic_ack_packet pn:%uL largest %uL fr:%uL"
-                   " nranges:%ui", pkt->pn, ctx->largest_range,
+                   "quic ngx_quic_ack_packet pn:%uL largest %L fr:%uL"
+                   " nranges:%ui", pkt->pn, (int64_t) ctx->largest_range,
                    ctx->first_range, ctx->nranges);
 
     prev_pending = ctx->pending_ack;
@@ -5710,7 +5710,7 @@
 
     if ((ngx_msec_int_t) timer <= 0) {
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic congestion ack recovery win:%uz ss:%uz if:%uz",
+                       "quic congestion ack recovery win:%uz ss:%z if:%uz",
                        cg->window, cg->ssthresh, cg->in_flight);
 
         return;
@@ -5720,14 +5720,14 @@
         cg->window += f->plen;
 
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic congestion slow start win:%uz ss:%uz if:%uz",
+                       "quic congestion slow start win:%uz ss:%z if:%uz",
                        cg->window, cg->ssthresh, cg->in_flight);
 
     } else {
         cg->window += qc->tp.max_udp_payload_size * f->plen / cg->window;
 
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic congestion avoidance win:%uz ss:%uz if:%uz",
+                       "quic congestion avoidance win:%uz ss:%z if:%uz",
                        cg->window, cg->ssthresh, cg->in_flight);
     }
 
@@ -5762,7 +5762,7 @@
 
     if ((ngx_msec_int_t) timer <= 0) {
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic congestion lost recovery win:%uz ss:%uz if:%uz",
+                       "quic congestion lost recovery win:%uz ss:%z if:%uz",
                        cg->window, cg->ssthresh, cg->in_flight);
 
         return;
@@ -5778,7 +5778,7 @@
     cg->ssthresh = cg->window;
 
     ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic congestion lost win:%uz ss:%uz if:%uz",
+                   "quic congestion lost win:%uz ss:%z if:%uz",
                    cg->window, cg->ssthresh, cg->in_flight);
 }