diff --git a/src/hlua.c b/src/hlua.c
index d5a3fd0de..8844ebe67 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -4766,7 +4766,7 @@ __LJMP static int hlua_http_req_get_headers(lua_State *L)
 	MAY_LJMP(check_args(L, 1, "req_get_headers"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_get_headers(L, htxn, &htxn->s->txn->req);
@@ -4779,7 +4779,7 @@ __LJMP static int hlua_http_res_get_headers(lua_State *L)
 	MAY_LJMP(check_args(L, 1, "res_get_headers"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_get_headers(L, htxn, &htxn->s->txn->rsp);
@@ -4815,7 +4815,7 @@ __LJMP static int hlua_http_req_rep_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_HDR));
@@ -4828,7 +4828,7 @@ __LJMP static int hlua_http_res_rep_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 4, "res_rep_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_HDR));
@@ -4841,7 +4841,7 @@ __LJMP static int hlua_http_req_rep_val(lua_State *L)
 	MAY_LJMP(check_args(L, 4, "req_rep_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->req, ACT_HTTP_REPLACE_VAL));
@@ -4854,7 +4854,7 @@ __LJMP static int hlua_http_res_rep_val(lua_State *L)
 	MAY_LJMP(check_args(L, 4, "res_rep_val"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return MAY_LJMP(hlua_http_rep_hdr(L, htxn, &htxn->s->txn->rsp, ACT_HTTP_REPLACE_VAL));
@@ -4883,7 +4883,7 @@ __LJMP static int hlua_http_req_del_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 2, "req_del_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
@@ -4896,7 +4896,7 @@ __LJMP static int hlua_http_res_del_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 2, "res_del_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
@@ -4925,7 +4925,7 @@ __LJMP static int hlua_http_req_add_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 3, "req_add_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_add_hdr(L, htxn, &htxn->s->txn->req);
@@ -4938,7 +4938,7 @@ __LJMP static int hlua_http_res_add_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 3, "res_add_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	return hlua_http_add_hdr(L, htxn, &htxn->s->txn->rsp);
@@ -4951,7 +4951,7 @@ static int hlua_http_req_set_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 3, "req_set_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	hlua_http_del_hdr(L, htxn, &htxn->s->txn->req);
@@ -4965,7 +4965,7 @@ static int hlua_http_res_set_hdr(lua_State *L)
 	MAY_LJMP(check_args(L, 3, "res_set_hdr"));
 	htxn = MAY_LJMP(hlua_checkhttp(L, 1));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	hlua_http_del_hdr(L, htxn, &htxn->s->txn->rsp);
@@ -4979,7 +4979,7 @@ static int hlua_http_req_set_meth(lua_State *L)
 	size_t name_len;
 	const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	lua_pushboolean(L, http_req_replace_stline(0, name, name_len, htxn->p, htxn->s) != -1);
@@ -4993,7 +4993,7 @@ static int hlua_http_req_set_path(lua_State *L)
 	size_t name_len;
 	const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	lua_pushboolean(L, http_req_replace_stline(1, name, name_len, htxn->p, htxn->s) != -1);
@@ -5007,7 +5007,7 @@ static int hlua_http_req_set_query(lua_State *L)
 	size_t name_len;
 	const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	/* Check length. */
@@ -5034,7 +5034,7 @@ static int hlua_http_req_set_uri(lua_State *L)
 	size_t name_len;
 	const char *name = MAY_LJMP(luaL_checklstring(L, 2, &name_len));
 
-	if (htxn->dir != SMP_OPT_DIR_REQ)
+	if (htxn->dir != SMP_OPT_DIR_REQ || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	lua_pushboolean(L, http_req_replace_stline(3, name, name_len, htxn->p, htxn->s) != -1);
@@ -5048,7 +5048,7 @@ static int hlua_http_res_set_status(lua_State *L)
 	unsigned int code = MAY_LJMP(luaL_checkinteger(L, 2));
 	const char *reason = MAY_LJMP(luaL_optlstring(L, 3, NULL, NULL));
 
-	if (htxn->dir != SMP_OPT_DIR_RES)
+	if (htxn->dir != SMP_OPT_DIR_RES || !(htxn->flags & HLUA_TXN_HTTP_RDY))
 		WILL_LJMP(lua_error(L));
 
 	http_res_set_status(code, reason, htxn->s);