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diff --git a/ioev.h b/ioev.h
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+/* $OpenBSD: ioev.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 <event.h>
+
+enum {
+ IO_CONNECTED = 0, /* connection successful */
+ IO_TLSREADY, /* TLS started succesfully */
+ IO_TLSVERIFIED, /* XXX - needs more work */
+ IO_DATAIN, /* new data in input buffer */
+ IO_LOWAT, /* output queue running low */
+ IO_DISCONNECTED, /* error? */
+ IO_TIMEOUT, /* error? */
+ IO_ERROR, /* details? */
+};
+
+#define IO_READ 0x01
+#define IO_WRITE 0x02
+#define IO_RW (IO_READ | IO_WRITE)
+#define IO_PAUSE_IN 0x04
+#define IO_PAUSE_OUT 0x08
+#define IO_RESET 0x10 /* internal */
+#define IO_HELD 0x20 /* internal */
+
+struct iobuf;
+struct io {
+ int sock;
+ void *arg;
+ void (*cb)(struct io*, int);
+ struct iobuf *iobuf;
+ size_t lowat;
+ int timeout;
+ int flags;
+ int state;
+ struct event ev;
+ void *ssl;
+ const char *error; /* only valid immediatly on callback */
+};
+
+void io_set_blocking(int, int);
+void io_set_linger(int, int);
+
+void io_init(struct io*, int, void*, void(*)(struct io*, int), struct iobuf*);
+void io_clear(struct io*);
+void io_set_read(struct io *);
+void io_set_write(struct io *);
+void io_set_timeout(struct io *, int);
+void io_set_lowat(struct io *, size_t);
+void io_pause(struct io *, int);
+void io_resume(struct io *, int);
+void io_reload(struct io *);
+int io_connect(struct io *, const struct sockaddr *, const struct sockaddr *);
+int io_start_tls(struct io *, void *);
+const char* io_strio(struct io *);
+const char* io_strevent(int);