react-native/Libraries/WebSocket/RCTWebSocketObserver.m

93 lines
2.0 KiB
Objective-C

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTWebSocketObserver.h"
#import <React/RCTConvert.h>
#import <React/RCTDefines.h>
#import <React/RCTLog.h>
#import <React/RCTUtils.h>
#import "RCTSRWebSocket.h"
#if RCT_DEV // Only supported in dev mode
@interface RCTWebSocketObserver () <RCTSRWebSocketDelegate>
@end
@implementation RCTWebSocketObserver {
NSURL *_url;
RCTSRWebSocket *_socket;
}
@synthesize delegate = _delegate;
- (instancetype)initWithURL:(NSURL *)url
{
if ((self = [self init])) {
_url = url;
}
return self;
}
- (void)start
{
[self stop];
_socket = [[RCTSRWebSocket alloc] initWithURL:_url];
_socket.delegate = self;
[_socket open];
}
- (void)stop
{
_socket.delegate = nil;
[_socket closeWithCode:1000 reason:@"Invalidated"];
_socket = nil;
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didReceiveMessage:(id)message
{
if (_delegate) {
NSError *error = nil;
NSDictionary<NSString *, id> *msg = RCTJSONParse(message, &error);
if (!error) {
[_delegate didReceiveWebSocketMessage:msg];
} else {
RCTLogError(@"WebSocketManager failed to parse message with error %@\n<message>\n%@\n</message>", error, message);
}
}
}
- (void)reconnect
{
__weak RCTSRWebSocket *socket = _socket;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
// Only reconnect if the observer wasn't stoppped while we were waiting
if (socket) {
[self start];
}
});
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didFailWithError:(NSError *)error
{
[self reconnect];
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
{
[self reconnect];
}
@end
#endif