--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iobuf.h	Thu Mar 27 09:53:52 2014 +0500
@@ -0,0 +1,71 @@
+/*	$OpenBSD: iobuf.h,v 1.1 2014/01/27 15:49:52 sunil Exp $	*/
+/*
+ * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
+ *
+ * Permission to use, copy, modify, and 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
+ */
+
+#include <sys/types.h>
+
+#include <stdarg.h>
+
+struct ioqbuf {
+	struct ioqbuf	*next;
+	char		*buf;
+	size_t		 size;
+	size_t		 wpos;
+	size_t		 rpos;
+};
+
+struct iobuf {
+	char		*buf;
+	size_t		 max;
+	size_t		 size;
+	size_t		 wpos;
+	size_t		 rpos;
+
+	size_t		 queued;
+	struct ioqbuf	*outq;
+	struct ioqbuf	*outqlast;
+};
+
+#define IOBUF_WANT_READ		-1
+#define IOBUF_WANT_WRITE	-2
+#define IOBUF_CLOSED		-3
+#define IOBUF_ERROR		-4
+#define IOBUF_SSLERROR		-5
+
+int	iobuf_init(struct iobuf *, size_t, size_t);
+void	iobuf_clear(struct iobuf *);
+
+int	iobuf_extend(struct iobuf *, size_t);
+void	iobuf_normalize(struct iobuf *);
+void	iobuf_drop(struct iobuf *, size_t);
+size_t	iobuf_space(struct iobuf *);
+size_t	iobuf_len(struct iobuf *);
+size_t	iobuf_left(struct iobuf *);
+char   *iobuf_data(struct iobuf *);
+char   *iobuf_getline(struct iobuf *, size_t *);
+ssize_t	iobuf_read(struct iobuf *, int);
+ssize_t	iobuf_read_ssl(struct iobuf *, void *);
+
+size_t  iobuf_queued(struct iobuf *);
+void*   iobuf_reserve(struct iobuf *, size_t);
+int	iobuf_queue(struct iobuf *, const void*, size_t);
+int	iobuf_queuev(struct iobuf *, const struct iovec *, int);
+int	iobuf_fqueue(struct iobuf *, const char *, ...);
+int	iobuf_vfqueue(struct iobuf *, const char *, va_list);
+int	iobuf_flush(struct iobuf *, int);
+int	iobuf_flush_ssl(struct iobuf *, void *);
+ssize_t	iobuf_write(struct iobuf *, int);
+ssize_t	iobuf_write_ssl(struct iobuf *, void *);