From 4c1d408dff014760ba7257d3562e4a890a5a21da Mon Sep 17 00:00:00 2001
From: Jason Frame <jason@onehackoranother.com>
Date: Fri, 28 Aug 2015 13:22:37 +0100
Subject: [PATCH] fix detection of websocket close event
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“bits” field is not a bitmask so & comparison is incorrect, compare for equality instead
---
 mongoose.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mongoose.c b/mongoose.c
index 1c3a6e601d..037387fc36 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -4121,7 +4121,7 @@ static void read_websocket(struct mg_connection *conn) {
 
       // Exit the loop if callback signalled to exit,
       // or "connection close" opcode received.
-      if ((bits & WEBSOCKET_OPCODE_CONNECTION_CLOSE) ||
+      if (((bits & 0x0F) == WEBSOCKET_OPCODE_CONNECTION_CLOSE) ||
           (conn->ctx->callbacks.websocket_data != NULL &&
            !conn->ctx->callbacks.websocket_data(conn, bits, data, data_len))) {
         stop = 1;