From 6494b95700381240f7f76860887cdf2887bbe139 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adrien=20Gallou=C3=ABt?= <adrien@gallouet.fr>
Date: Sat, 1 Dec 2018 11:17:39 +0000
Subject: [PATCH] Add a boost factor to estimate send.ratemax
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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
---
 mud.c | 4 +++-
 mud.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/mud.c b/mud.c
index f1a28d3..e88978a 100644
--- a/mud.c
+++ b/mud.c
@@ -528,6 +528,7 @@ mud_reset_path(struct mud *mud, struct mud_path *path)
     path->mtu.max = MUD_MTU_MAX;
     path->mtu.count = 0;
     path->send.ratemax = 0;
+    path->send_factor = 8;
     path->window = 0;
     path->ok = 0;
     path->stat_count = 0;
@@ -1237,7 +1238,7 @@ mud_packet_recv(struct mud *mud, struct mud_path *path,
     const uint64_t b = (path->send.ratemax ?: 5000) * target;
 
     if (dt < target) {
-        uint64_t delta = ((target - dt) * a) / b;
+        uint64_t delta = ((target - dt) * a * path->send_factor) / b;
         path->send.ratemax += delta;
     } else if (dt > target) {
         uint64_t delta = ((dt - target) * a) / b;
@@ -1248,6 +1249,7 @@ mud_packet_recv(struct mud *mud, struct mud_path *path,
         }
         if (path->send.ratemax < 5000)
             path->send.ratemax = 5000;
+        path->send_factor = 1;
     }
 
     return !!peer_sent;
diff --git a/mud.h b/mud.h
index 8fe66f7..a3c6285 100644
--- a/mud.h
+++ b/mud.h
@@ -31,6 +31,7 @@ struct mud_path {
     struct sockaddr_storage local_addr, addr, r_addr;
     struct mud_value rtt, lat, rate;
     uint64_t latmin, dt;
+    uint64_t send_factor;
     uint64_t r_rate;
     uint64_t r_ratemax;
     uint64_t window;