From a56abf68dd4fd1bfacecfac82841c7210a5d1184 Mon Sep 17 00:00:00 2001
From: Jnewbon <48688400+Jnewbon@users.noreply.github.com>
Date: Mon, 29 Apr 2019 13:56:08 +0100
Subject: [PATCH] #6488 Fixed a memory leak in the TLS socket code

---
 src/lib/net/SecureSocket.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/lib/net/SecureSocket.cpp b/src/lib/net/SecureSocket.cpp
index 43b45e2a..21d9bbdf 100644
--- a/src/lib/net/SecureSocket.cpp
+++ b/src/lib/net/SecureSocket.cpp
@@ -199,6 +199,7 @@ SecureSocket::doWrite()
 {
     static bool s_retry = false;
     static int s_retrySize = 0;
+    static int s_staticBufferSize = 0;
     static void* s_staticBuffer = NULL;
 
     // write data
@@ -211,8 +212,13 @@ SecureSocket::doWrite()
     }
     else {
         bufferSize = m_outputBuffer.getSize();
-        s_staticBuffer = malloc(bufferSize);
-        memcpy(s_staticBuffer, m_outputBuffer.peek(bufferSize), bufferSize);
+        if (bufferSize != 0) {
+            if (bufferSize > s_staticBufferSize) {
+                s_staticBuffer = realloc(s_staticBuffer, bufferSize);
+                s_staticBufferSize = bufferSize;
+            }
+            memcpy(s_staticBuffer, m_outputBuffer.peek(bufferSize), bufferSize);
+        }
     }
     
     if (bufferSize == 0) {
@@ -224,8 +230,6 @@ SecureSocket::doWrite()
         if (status > 0) {
             s_retry = false;
             bufferSize = 0;
-            free(s_staticBuffer);
-            s_staticBuffer = NULL;
         }
         else if (status < 0) {
             return kBreak;