src/objective-c/GRPCClient/private/GRPCHost.h

/*
 *
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#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@class GRPCCompletionQueue;
struct grpc_call;

@interface GRPCHost : NSObject

@property(nonatomic, readonly) NSString *address;
@property(nonatomic, copy, nullable) NSString *userAgentPrefix;

/** The following properties should only be modified for testing: */

@property(nonatomic, getter=isSecure) BOOL secure;

@property(nonatomic, copy, nullable) NSString *pathToCertificates;
@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;

/** 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