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diff --git a/lib/lwres/context_p.h b/lib/lwres/context_p.h
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+++ b/lib/lwres/context_p.h
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+/*
+ * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: context_p.h,v 1.17 2007/06/19 23:47:22 tbox Exp $ */
+
+#ifndef LWRES_CONTEXT_P_H
+#define LWRES_CONTEXT_P_H 1
+
+/*! \file */
+
+/*@{*/
+/**
+ * Helper functions, assuming the context is always called "ctx" in
+ * the scope these functions are called from.
+ */
+#define CTXMALLOC(len)		ctx->malloc(ctx->arg, (len))
+#define CTXFREE(addr, len)	ctx->free(ctx->arg, (addr), (len))
+/*@}*/
+
+#define LWRES_DEFAULT_TIMEOUT	120	/* 120 seconds for a reply */
+
+/**
+ * Not all the attributes here are actually settable by the application at
+ * this time.
+ */
+struct lwres_context {
+	unsigned int		timeout;	/*%< time to wait for reply */
+	lwres_uint32_t		serial;		/*%< serial number state */
+
+	/*
+	 * For network I/O.
+	 */
+	int			sock;		/*%< socket to send on */
+	lwres_addr_t		address;	/*%< address to send to */
+
+	/*@{*/
+	/*
+	 * Function pointers for allocating memory.
+	 */
+	lwres_malloc_t		malloc;
+	lwres_free_t		free;
+	void		       *arg;
+	/*@}*/
+
+	/*%
+	 * resolv.conf-like data
+	 */
+	lwres_conf_t		confdata;
+};
+
+#endif /* LWRES_CONTEXT_P_H */