1 files changed, 46 insertions, 0 deletions
diff --git a/testing/pdns/allocate-tcp-buffer-dynamically.patch b/testing/pdns/allocate-tcp-buffer-dynamically.patch
new file mode 100644
index 0000000000..b346a2e9a1
--- /dev/null
+++ b/testing/pdns/allocate-tcp-buffer-dynamically.patch
@@ -0,0 +1,46 @@
+From c2b4ccc0d125a30a1970f555f572bf74de27a3d5 Mon Sep 17 00:00:00 2001
+From: bert hubert <bert.hubert@netherlabs.nl>
+Date: Sat, 10 Jan 2015 23:06:38 +0100
+Subject: [PATCH] allocate TCP buffer dynamically, decreasing our stack usage
+
+---
+ pdns/tcpreceiver.cc | 9 +++++----
+ 1 file changed, 5 insertions(+), 4 deletions(-)
+
+diff --git a/pdns/tcpreceiver.cc b/pdns/tcpreceiver.cc
+index f90bf90..6356d34 100644
+--- a/pdns/tcpreceiver.cc
++++ b/pdns/tcpreceiver.cc
+@@ -253,7 +253,8 @@ void *TCPNameserver::doConnection(void *data)
+   pthread_detach(pthread_self());
+   Utility::setNonBlocking(fd);
+   try {
+-    char mesg[65535];
++    int mesgsize=65535;
++    scoped_array<char> mesg(new char[mesgsize]);
+     
+     DLOG(L<<"TCP Connection accepted on fd "<<fd<<endl);
+     bool logDNSQueries= ::arg().mustDo("log-dns-queries");
+@@ -278,19 +279,19 @@ void *TCPNameserver::doConnection(void *data)
+ 
+       // do not remove this check as it will catch if someone
+       // decreases the mesg buffer size for some reason. 
+-      if(pktlen>sizeof(mesg)) {
++      if(pktlen > mesgsize) {
+         L<<Logger::Error<<"Received an overly large question from "<<remote.toString()<<", dropping"<<endl;
+         break;
+       }
+       
+-      getQuestion(fd, mesg, pktlen, remote);
++      getQuestion(fd, mesg.get(), pktlen, remote);
+       S.inc("tcp-queries");      
+ 
+       packet=shared_ptr<DNSPacket>(new DNSPacket);
+       packet->setRemote(&remote);
+       packet->d_tcp=true;
+       packet->setSocket(fd);
+-      if(packet->parse(mesg, pktlen)<0)
++      if(packet->parse(mesg.get(), pktlen)<0)
+         break;
+       
+       if(packet->qtype.getCode()==QType::AXFR) {