nacl_io: accept now allows addr and len to be NULL

native_client_sdk/src/libraries/nacl_io/socket/tcp_node.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "nacl_io/ossocket.h"
 #ifdef PROVIDES_SOCKET_API
 
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
@@ skipping 435 matching lines @@
   int s = emitter_->GetAcceptedSocket_Locked();
   // Non-blocking case.
   if (s == 0)
     return EAGAIN;
 
   // Consume the new socket and start listening for the next one
   *out_sock = s;
   emitter_->ClearEvents_Locked(POLLIN);
 
   // Set the out paramaters
-  PP_Resource remote_addr = TCPInterface()->GetRemoteAddress(*out_sock);
-  *len = ResourceToSockAddr(remote_addr, *len, addr);
-  filesystem_->ppapi()->ReleaseResource(remote_addr);
+  if (addr && len) {
+    PP_Resource remote_addr = TCPInterface()->GetRemoteAddress(*out_sock);
+    *len = ResourceToSockAddr(remote_addr, *len, addr);
+    filesystem_->ppapi()->ReleaseResource(remote_addr);
+  }
 
   QueueAccept();
   return 0;
 }
 
 // We can not bind a client socket with PPAPI.  For now we ignore the
 // bind but report the correct address later, just in case someone is
 // binding without really caring what the address is (for example to
 // select a more optimized interface/route.)
 Error TcpNode::Bind(const struct sockaddr* addr, socklen_t len) {
@@ skipping 130 matching lines @@
   assert(emitter_.get());
   if (emitter_->GetError_Locked())
     return EPIPE;
   *out_len = emitter_->WriteOut_Locked((char*)buf, len);
   return 0;
 }
 
 }  // namespace nacl_io
 
 #endif  // PROVIDES_SOCKET_API