/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

#import "GRPCCall.h"

/** Helpers for setting and reading headers compatible with OAuth2. */
@interface GRPCCall (OAuth2)

/**
 * Setting this property is equivalent to setting "Bearer <passed token>" as the value of the
 * request header with key "authorization" (the authorization header). Setting it to nil removes the
 * authorization header from the request.
 * The value obtained by getting the property is the OAuth2 bearer token if the authorization header
 * of the request has the form "Bearer <token>", or nil otherwise.
 */
@property(atomic, copy) NSString *oauth2AccessToken;

/** Returns the value (if any) of the "www-authenticate" response header (the challenge header). */
@property(atomic, readonly) NSString *oauth2ChallengeHeader;

@end