From 7b37e0cb8b55bab6329b5ae52e0e75e3d84d00e7 Mon Sep 17 00:00:00 2001
From: Sergey Lyubka <valenok@gmail.com>
Date: Tue, 3 Jun 2014 17:00:52 +0100
Subject: [PATCH] Added simplistic flow control in transfer_file_data()
---
mongoose.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/mongoose.c b/mongoose.c
index 24abcc535..c421938bd 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -4494,8 +4494,15 @@ static void close_local_endpoint(struct connection *conn) {
static void transfer_file_data(struct connection *conn) {
char buf[IOBUF_SIZE];
- int n = read(conn->endpoint.fd, buf, conn->cl < (int64_t) sizeof(buf) ?
- (int) conn->cl : (int) sizeof(buf));
+ int n;
+
+ // If output buffer is too big, don't send anything. Wait until
+ // mongoose drains already buffered data to the client.
+ if (conn->ns_conn->send_iobuf.len > sizeof(buf) * 2) return;
+
+ // Do not send anyt
+ n = read(conn->endpoint.fd, buf, conn->cl < (int64_t) sizeof(buf) ?
+ (int) conn->cl : (int) sizeof(buf));
if (n <= 0) {
close_local_endpoint(conn);
--
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