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diff --git a/include/afb/afb-binding-v1.h b/include/afb/afb-binding-v1.h
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+/*
+ * Copyright (C) 2016, 2017 "IoT.bzh"
+ * Author: José Bollo <jose.bollo@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+struct afb_binding_interface;
+
+/*
+ * Function for registering the binding
+ *
+ * A binding V1 MUST have an exported function of name
+ *
+ *              afbBindingV1Register
+ *
+ * This function is called during loading of the binding. It
+ * receives an 'interface' that should be recorded for later access to
+ * functions provided by the framework.
+ *
+ * This function MUST return the address of a structure that describes
+ * the binding and its implemented verbs.
+ *
+ * In case of initialisation error, NULL must be returned.
+ *
+ * Be aware that the given 'interface' is not fully functionnal
+ * because no provision is given to the name and description
+ * of the binding. Check the function 'afbBindingV1ServiceInit'
+ * defined in the file <afb/afb-service-itf.h> because when
+ * the function 'afbBindingV1ServiceInit' is called, the 'interface'
+ * is fully functionnal.
+ */
+extern const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *interface);
+
+/*
+ * Enum for Session/Token/Assurance middleware.
+ * This enumeration is valid for bindings of type 1
+ */
+enum afb_session_v1
+{
+       AFB_SESSION_NONE = 0,   /* nothing required */
+       AFB_SESSION_CREATE = 1, /* Obsolete */
+       AFB_SESSION_CLOSE = 2,  /* After token authentification, closes the session at end */
+       AFB_SESSION_RENEW = 4,  /* After token authentification, refreshes the token at end */
+       AFB_SESSION_CHECK = 8,  /* Requires token authentification */
+
+       AFB_SESSION_LOA_GE = 16, /* check that the LOA is greater or equal to the given value */
+       AFB_SESSION_LOA_LE = 32, /* check that the LOA is lesser or equal to the given value */
+       AFB_SESSION_LOA_EQ = 48, /* check that the LOA is equal to the given value */
+
+       AFB_SESSION_LOA_SHIFT = 6, /* shift for LOA */
+       AFB_SESSION_LOA_MASK = 7,  /* mask for LOA */
+
+       AFB_SESSION_LOA_0 = 0,   /* value for LOA of 0 */
+       AFB_SESSION_LOA_1 = 64,  /* value for LOA of 1 */
+       AFB_SESSION_LOA_2 = 128, /* value for LOA of 2 */
+       AFB_SESSION_LOA_3 = 192, /* value for LOA of 3 */
+       AFB_SESSION_LOA_4 = 256, /* value for LOA of 4 */
+
+       AFB_SESSION_LOA_LE_0 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_0, /* check LOA <= 0 */
+       AFB_SESSION_LOA_LE_1 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_1, /* check LOA <= 1 */
+       AFB_SESSION_LOA_LE_2 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_2, /* check LOA <= 2 */
+       AFB_SESSION_LOA_LE_3 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_3, /* check LOA <= 3 */
+
+       AFB_SESSION_LOA_GE_0 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_0, /* check LOA >= 0 */
+       AFB_SESSION_LOA_GE_1 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_1, /* check LOA >= 1 */
+       AFB_SESSION_LOA_GE_2 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_2, /* check LOA >= 2 */
+       AFB_SESSION_LOA_GE_3 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_3, /* check LOA >= 3 */
+
+       AFB_SESSION_LOA_EQ_0 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_0, /* check LOA == 0 */
+       AFB_SESSION_LOA_EQ_1 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_1, /* check LOA == 1 */
+       AFB_SESSION_LOA_EQ_2 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_2, /* check LOA == 2 */
+       AFB_SESSION_LOA_EQ_3 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_3  /* check LOA == 3 */
+};
+
+/*
+ * Description of one verb of the API provided by the binding
+ * This enumeration is valid for bindings of type version 1
+ */
+struct afb_verb_desc_v1
+{
+       const char *name;                       /* name of the verb */
+       enum afb_session_v1 session;            /* authorisation and session requirements of the verb */
+       void (*callback)(struct afb_req req);   /* callback function implementing the verb */
+       const char *info;                       /* textual description of the verb */
+};
+
+/*
+ * Description of the bindings of type version 1
+ */
+struct afb_binding_desc_v1
+{
+       const char *info;                       /* textual information about the binding */
+       const char *prefix;                     /* required prefix name for the binding */
+       const struct afb_verb_desc_v1 *verbs;   /* array of descriptions of verbs terminated by a NULL name */
+};
+