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/*
* Copyright 2017 Google
*
* 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.
*/
#import <Foundation/Foundation.h>
@class FIRMessagingConnection;
@class FIRMessagingDataMessageManager;
@class FIRMessagingRmqManager;
@class GtalkDataMessageStanza;
@class GPBMessage;
typedef void (^FIRMessagingMessageHandler)(NSDictionary *);
typedef NS_ENUM(NSUInteger, FIRMessagingConnectionState) {
kFIRMessagingConnectionNotConnected = 0,
kFIRMessagingConnectionConnecting,
kFIRMessagingConnectionConnected,
kFIRMessagingConnectionSignedIn,
};
typedef NS_ENUM(NSUInteger, FIRMessagingConnectionCloseReason) {
kFIRMessagingConnectionCloseReasonSocketDisconnected = 0,
kFIRMessagingConnectionCloseReasonTimeout,
kFIRMessagingConnectionCloseReasonUserDisconnect,
};
@protocol FIRMessagingConnectionDelegate<NSObject>
- (void)connection:(FIRMessagingConnection *)fcmConnection
didCloseForReason:(FIRMessagingConnectionCloseReason)reason;
- (void)didLoginWithConnection:(FIRMessagingConnection *)fcmConnection;
- (void)connectionDidRecieveMessage:(GtalkDataMessageStanza *)message;
/**
* Called when a stream ACK or a selective ACK are received - this indicates the
* message has been received by MCS.
* @return The count of rmqIds deleted from the client RMQ store.
*/
- (int)connectionDidReceiveAckForRmqIds:(NSArray *)rmqIds;
@end
/**
* This class maintains the actual FIRMessaging connection that we use to receive and send messages
* while the app is in foreground. Once we have a registrationID from the FIRMessaging backend we
* are able to set up this connection which is used for any further communication with FIRMessaging
* backend. In case the connection breaks off while the app is still being used we try to rebuild
* the connection with an exponential backoff.
*
* This class also notifies the delegate about the main events happening in the lifcycle of the
* FIRMessaging connection (read FIRMessagingConnectionDelegate). All of the `on-the-wire`
* interactions with FIRMessaging are channelled through here.
*/
@interface FIRMessagingConnection : NSObject
@property(nonatomic, readwrite, assign) int64_t lastHeartbeatPingTimestamp;
@property(nonatomic, readonly, assign) FIRMessagingConnectionState state;
@property(nonatomic, readonly, copy) NSString *host;
@property(nonatomic, readonly, assign) NSUInteger port;
@property(nonatomic, readwrite, weak) id<FIRMessagingConnectionDelegate> delegate;
- (instancetype)initWithAuthID:(NSString *)authId
token:(NSString *)token
host:(NSString *)host
port:(NSUInteger)port
runLoop:(NSRunLoop *)runLoop
rmq2Manager:(FIRMessagingRmqManager *)rmq2Manager
fcmManager:(FIRMessagingDataMessageManager *)dataMessageManager;
- (void)signIn; // connect
- (void)signOut; // disconnect
/**
* Teardown the FIRMessaging connection and deallocate the resources being held up by the
* connection.
*/
- (void)teardown;
/**
* Send proto to the wire. The message will be cached before we try to send so that in case of
* failure we can send it again later on when we have connection.
*/
- (void)sendProto:(GPBMessage *)proto;
/**
* Send a message after the currently in progress connection succeeds, otherwise drop it.
*
* This should be used for TTL=0 messages that force a reconnect. They shouldn't be persisted
* in the RMQ, but they should be sent if the reconnect is successful.
*/
- (void)sendOnConnectOrDrop:(GPBMessage *)message;
@end