From c7f063533b8eb8a4323bc09c9aff60ece9ecae10 Mon Sep 17 00:00:00 2001
From: Tobias Pankrath <tobias.pankrath@vattenfall.de>
Date: Sat, 18 Sep 2021 13:17:54 +0200
Subject: [PATCH] fix(http2): increase receivebuffer.length

---
 http2.d | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/http2.d b/http2.d
index ecd7447..aeba34b 100644
--- a/http2.d
+++ b/http2.d
@@ -3540,6 +3540,15 @@ class WebSocket {
 	public bool lowLevelReceive() {
 		if(readyState == CONNECTING)
 			throw new Exception("WebSocket not connected when trying to receive. Did you forget to call connect(); ?");
+		if (receiveBufferUsedLength == receiveBuffer.length)
+		{
+			if (receiveBuffer.length == config.maximumReceiveBufferSize)
+				throw new Exception("Maximum receive buffer size exhausted");
+
+			import std.algorithm : min;
+			receiveBuffer.length = min(receiveBuffer.length + config.initialReceiveBufferSize,
+				config.maximumReceiveBufferSize);
+		}
 		auto r = socket.receive(receiveBuffer[receiveBufferUsedLength .. $]);
 		if(r == 0)
 			return false;