diff --git a/include/types/h1.h b/include/types/h1.h
new file mode 100644
index 0000000..8a146c3
--- /dev/null
+++ b/include/types/h1.h
@@ -0,0 +1,85 @@
+/*
+ * include/types/h1.h
+ * This file contains HTTP/1 protocol definitions.
+ *
+ * Copyright (C) 2000-2017 Willy Tarreau - w@1wt.eu
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _TYPES_H1_H
+#define _TYPES_H1_H
+
+/* Possible states while parsing HTTP/1 messages (request|response) */
+enum h1_state {
+	HTTP_MSG_RQBEFORE     =  0, // request: leading LF, before start line
+	HTTP_MSG_RQBEFORE_CR  =  1, // request: leading CRLF, before start line
+	/* these ones define a request start line */
+	HTTP_MSG_RQMETH       =  2, // parsing the Method
+	HTTP_MSG_RQMETH_SP    =  3, // space(s) after the Method
+	HTTP_MSG_RQURI        =  4, // parsing the Request URI
+	HTTP_MSG_RQURI_SP     =  5, // space(s) after the Request URI
+	HTTP_MSG_RQVER        =  6, // parsing the Request Version
+	HTTP_MSG_RQLINE_END   =  7, // end of request line (CR or LF)
+
+	HTTP_MSG_RPBEFORE     =  8, // response: leading LF, before start line
+	HTTP_MSG_RPBEFORE_CR  =  9, // response: leading CRLF, before start line
+
+	/* these ones define a response start line */
+	HTTP_MSG_RPVER        = 10, // parsing the Response Version
+	HTTP_MSG_RPVER_SP     = 11, // space(s) after the Response Version
+	HTTP_MSG_RPCODE       = 12, // response code
+	HTTP_MSG_RPCODE_SP    = 13, // space(s) after the response code
+	HTTP_MSG_RPREASON     = 14, // response reason
+	HTTP_MSG_RPLINE_END   = 15, // end of response line (CR or LF)
+
+	/* common header processing */
+	HTTP_MSG_HDR_FIRST    = 16, // waiting for first header or last CRLF (no LWS possible)
+	HTTP_MSG_HDR_NAME     = 17, // parsing header name
+	HTTP_MSG_HDR_COL      = 18, // parsing header colon
+	HTTP_MSG_HDR_L1_SP    = 19, // parsing header LWS (SP|HT) before value
+	HTTP_MSG_HDR_L1_LF    = 20, // parsing header LWS (LF) before value
+	HTTP_MSG_HDR_L1_LWS   = 21, // checking whether it's a new header or an LWS
+	HTTP_MSG_HDR_VAL      = 22, // parsing header value
+	HTTP_MSG_HDR_L2_LF    = 23, // parsing header LWS (LF) inside/after value
+	HTTP_MSG_HDR_L2_LWS   = 24, // checking whether it's a new header or an LWS
+
+	HTTP_MSG_LAST_LF      = 25, // parsing last LF
+
+	/* error state : must be before HTTP_MSG_BODY so that (>=BODY) always indicates
+	 * that data are being processed.
+	 */
+	HTTP_MSG_ERROR        = 26, // an error occurred
+	/* Body processing.
+	 * The state HTTP_MSG_BODY is a delimiter to know if we're waiting for headers
+	 * or body. All the sub-states below also indicate we're processing the body,
+	 * with some additional information.
+	 */
+	HTTP_MSG_BODY         = 27, // parsing body at end of headers
+	HTTP_MSG_100_SENT     = 28, // parsing body after a 100-Continue was sent
+	HTTP_MSG_CHUNK_SIZE   = 29, // parsing the chunk size (RFC7230 #4.1)
+	HTTP_MSG_DATA         = 30, // skipping data chunk / content-length data
+	HTTP_MSG_CHUNK_CRLF   = 31, // skipping CRLF after data chunk
+	HTTP_MSG_TRAILERS     = 32, // trailers (post-data entity headers)
+	/* we enter this state when we've received the end of the current message */
+	HTTP_MSG_ENDING       = 33, // message end received, wait that the filters end too
+	HTTP_MSG_DONE         = 34, // message end received, waiting for resync or close
+	HTTP_MSG_CLOSING      = 35, // shutdown_w done, not all bytes sent yet
+	HTTP_MSG_CLOSED       = 36, // shutdown_w done, all bytes sent
+	HTTP_MSG_TUNNEL       = 37, // tunneled data after DONE
+} __attribute__((packed));
+
+
+#endif /* _TYPES_H1_H */
diff --git a/include/types/hlua.h b/include/types/hlua.h
index c7405a3..bff29d0 100644
--- a/include/types/hlua.h
+++ b/include/types/hlua.h
@@ -62,7 +62,7 @@
 	union {
 		struct {
 			int dir;
-			enum ht_state state;
+			enum h1_state state;
 		} http;
 	} data;
 };
diff --git a/include/types/proto_http.h b/include/types/proto_http.h
index 1d378ac..3f99df7 100644
--- a/include/types/proto_http.h
+++ b/include/types/proto_http.h
@@ -27,6 +27,7 @@
 #include <common/mini-clist.h>
 #include <common/regex.h>
 
+#include <types/h1.h>
 #include <types/hdr_idx.h>
 #include <types/filters.h>
 #include <types/sample.h>
@@ -124,65 +125,6 @@
  *
  */
 
-/* Possible states while parsing HTTP messages (request|response) */
-enum ht_state {
-	HTTP_MSG_RQBEFORE     =  0, // request: leading LF, before start line
-	HTTP_MSG_RQBEFORE_CR  =  1, // request: leading CRLF, before start line
-	/* these ones define a request start line */
-	HTTP_MSG_RQMETH       =  2, // parsing the Method
-	HTTP_MSG_RQMETH_SP    =  3, // space(s) after the Method
-	HTTP_MSG_RQURI        =  4, // parsing the Request URI
-	HTTP_MSG_RQURI_SP     =  5, // space(s) after the Request URI
-	HTTP_MSG_RQVER        =  6, // parsing the Request Version
-	HTTP_MSG_RQLINE_END   =  7, // end of request line (CR or LF)
-
-	HTTP_MSG_RPBEFORE     =  8, // response: leading LF, before start line
-	HTTP_MSG_RPBEFORE_CR  =  9, // response: leading CRLF, before start line
-
-	/* these ones define a response start line */
-	HTTP_MSG_RPVER        = 10, // parsing the Response Version
-	HTTP_MSG_RPVER_SP     = 11, // space(s) after the Response Version
-	HTTP_MSG_RPCODE       = 12, // response code
-	HTTP_MSG_RPCODE_SP    = 13, // space(s) after the response code
-	HTTP_MSG_RPREASON     = 14, // response reason
-	HTTP_MSG_RPLINE_END   = 15, // end of response line (CR or LF)
-
-	/* common header processing */
-	HTTP_MSG_HDR_FIRST    = 16, // waiting for first header or last CRLF (no LWS possible)
-	HTTP_MSG_HDR_NAME     = 17, // parsing header name
-	HTTP_MSG_HDR_COL      = 18, // parsing header colon
-	HTTP_MSG_HDR_L1_SP    = 19, // parsing header LWS (SP|HT) before value
-	HTTP_MSG_HDR_L1_LF    = 20, // parsing header LWS (LF) before value
-	HTTP_MSG_HDR_L1_LWS   = 21, // checking whether it's a new header or an LWS
-	HTTP_MSG_HDR_VAL      = 22, // parsing header value
-	HTTP_MSG_HDR_L2_LF    = 23, // parsing header LWS (LF) inside/after value
-	HTTP_MSG_HDR_L2_LWS   = 24, // checking whether it's a new header or an LWS
-
-	HTTP_MSG_LAST_LF      = 25, // parsing last LF
-
-	/* error state : must be before HTTP_MSG_BODY so that (>=BODY) always indicates
-	 * that data are being processed.
-	 */
-	HTTP_MSG_ERROR        = 26, // an error occurred
-	/* Body processing.
-	 * The state HTTP_MSG_BODY is a delimiter to know if we're waiting for headers
-	 * or body. All the sub-states below also indicate we're processing the body,
-	 * with some additional information.
-	 */
-	HTTP_MSG_BODY         = 27, // parsing body at end of headers
-	HTTP_MSG_100_SENT     = 28, // parsing body after a 100-Continue was sent
-	HTTP_MSG_CHUNK_SIZE   = 29, // parsing the chunk size (RFC7230 #4.1)
-	HTTP_MSG_DATA         = 30, // skipping data chunk / content-length data
-	HTTP_MSG_CHUNK_CRLF   = 31, // skipping CRLF after data chunk
-	HTTP_MSG_TRAILERS     = 32, // trailers (post-data entity headers)
-	/* we enter this state when we've received the end of the current message */
-	HTTP_MSG_ENDING       = 33, // message end received, wait that the filters end too
-	HTTP_MSG_DONE         = 34, // message end received, waiting for resync or close
-	HTTP_MSG_CLOSING      = 35, // shutdown_w done, not all bytes sent yet
-	HTTP_MSG_CLOSED       = 36, // shutdown_w done, all bytes sent
-	HTTP_MSG_TUNNEL       = 37, // tunneled data after DONE
-} __attribute__((packed));
-
 /*
  * HTTP message status flags (msg->flags)
  */
@@ -323,8 +265,8 @@
  * care for wrapping (no addition overflow nor subtract underflow).
  */
 struct http_msg {
-	enum ht_state msg_state;               /* where we are in the current message parsing */
-	enum ht_state err_state;               /* the state where the parsing error was detected, only is MSG_ERROR */
+	enum h1_state msg_state;               /* where we are in the current message parsing */
+	enum h1_state err_state;               /* the state where the parsing error was detected, only is MSG_ERROR */
 	unsigned char flags;                   /* flags describing the message (HTTP version, ...) */
 	/* 5 bytes unused here */
 	struct channel *chn;                   /* pointer to the channel transporting the message */