Really connect to the same server in FTP network transaction.

net/base/nss_memio.h

 // Copyright (c) 2008 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.
 // Written in NSPR style to also be suitable for adding to the NSS demo suite
 
 #ifndef __MEMIO_H
 #define __MEMIO_H
 
+#include <stddef.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include "prio.h"
 
+struct sockaddr;
+
 /* Opaque structure.  Really just a more typesafe alias for PRFilePrivate. */
 struct memio_Private;
 typedef struct memio_Private memio_Private;
 
 /*----------------------------------------------------------------------
  NSPR I/O layer that terminates in a pair of circular buffers
  rather than talking to the real network.
  To use this with NSS:
  1) call memio_CreateIOLayer to create a fake NSPR socket
  2) call SSL_ImportFD to ssl-ify the socket
  3) Do your own networking calls to set up a TCP connection
  4) call memio_SetPeerName to tell NSS about the other end of the connection
  5) While at the same time doing plaintext nonblocking NSPR I/O as
     usual to the nspr file descriptor returned by SSL_ImportFD,
     your app must shuttle encrypted data between
     the real network and memio's network buffers.
     memio_GetReadParams/memio_PutReadResult
     are the hooks you need to pump data into memio's input buffer,
     and memio_GetWriteParams/memio_PutWriteResult
     are the hooks you need to pump data out of memio's output buffer.
 ----------------------------------------------------------------------*/
 
 /* Create the I/O layer and its two circular buffers. */
 PRFileDesc *memio_CreateIOLayer(int bufsize);
 
 /* Must call before trying to make an ssl connection */
-void memio_SetPeerName(PRFileDesc *fd, const PRNetAddr *peername);
+void memio_SetPeerName(PRFileDesc *fd, const struct sockaddr *peername,
+                       size_t peername_len);
 
 /* Return a private pointer needed by the following
  * four functions.  (We could have passed a PRFileDesc to
  * them, but that would be slower.  Better for the caller
  * to grab the pointer once and cache it.
  * This may be a premature optimization.)
  */
 memio_Private *memio_GetSecret(PRFileDesc *fd);
 
 /* Ask memio where to put bytes from the network, and how many it can handle.
@@ skipping 25 matching lines @@
  * On EWOULDBLOCK or the equivalent, don't call this function.
  */
 void memio_PutWriteResult(memio_Private *secret, int bytes_written);
 
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif