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/*
*
* 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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@class GRPCCompletionQueue;
struct grpc_call;
struct grpc_channel_credentials;
@interface GRPCHost : NSObject
+ (void)flushChannelCache;
@property(nonatomic, readonly) NSString *address;
@property(nonatomic, copy, nullable) NSString *userAgentPrefix;
@property(nonatomic, nullable) struct grpc_channel_credentials *channelCreds;
/** The following properties should only be modified for testing: */
@property(nonatomic, getter=isSecure) BOOL secure;
@property(nonatomic, copy, nullable) NSString *hostNameOverride;
- (nullable instancetype)init NS_UNAVAILABLE;
/** Host objects initialized with the same address are the same. */
+ (nullable instancetype)hostWithAddress:(NSString *)address;
- (nullable instancetype)initWithAddress:(NSString *)address NS_DESIGNATED_INITIALIZER;
- (BOOL)setTLSPEMRootCerts:(nullable NSString *)pemRootCerts
withPrivateKey:(nullable NSString *)pemPrivateKey
withCertChain:(nullable NSString *)pemCertChain
error:(NSError **)errorPtr;
/** Create a grpc_call object to the provided path on this host. */
- (nullable struct grpc_call *)unmanagedCallWithPath:(NSString *)path
completionQueue:(GRPCCompletionQueue *)queue;
// TODO: There's a race when a new RPC is coming through just as an existing one is getting
// notified that there's no connectivity. If connectivity comes back at that moment, the new RPC
// will have its channel destroyed by the other RPC, and will never get notified of a problem, so
// it'll hang (the C layer logs a timeout, with exponential back off). One solution could be to pass
// the GRPCChannel to the GRPCCall, renaming this as "disconnectChannel:channel", which would only
// act on that specific channel.
- (void)disconnect;
@end
NS_ASSUME_NONNULL_END
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