react-native/Libraries/WebSocket/RCTReconnectingWebSocket.m

118 lines
2.6 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 "RCTReconnectingWebSocket.h"
#import <React/RCTConvert.h>
#import <React/RCTDefines.h>
#import <fishhook/fishhook.h>
#import "RCTSRWebSocket.h"
#if RCT_DEV // Only supported in dev mode
static void (*orig_nwlog_legacy_v)(int, char*, va_list);
static void my_nwlog_legacy_v(int level, char *format, va_list args) {
static const uint buffer_size = 256;
static char buffer[buffer_size];
va_list copy;
va_copy(copy, args);
vsnprintf(buffer, buffer_size, format, copy);
va_end(copy);
if (strstr(buffer, "nw_connection_get_connected_socket_block_invoke") == NULL) {
orig_nwlog_legacy_v(level, format, args);
}
}
@interface RCTReconnectingWebSocket () <RCTSRWebSocketDelegate>
@end
@implementation RCTReconnectingWebSocket {
NSURL *_url;
RCTSRWebSocket *_socket;
}
@synthesize delegate = _delegate;
+ (void)load
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
rebind_symbols((struct rebinding[1]){
{"nwlog_legacy_v", my_nwlog_legacy_v, (void *)&orig_nwlog_legacy_v}
}, 1);
});
}
- (instancetype)initWithURL:(NSURL *)url
{
if (self = [super init]) {
_url = url;
}
return self;
}
- (void)send:(id)data
{
[_socket send:data];
}
- (void)start
{
[self stop];
_socket = [[RCTSRWebSocket alloc] initWithURL:_url];
_socket.delegate = self;
if (_delegateDispatchQueue) {
[_socket setDelegateDispatchQueue:_delegateDispatchQueue];
}
[_socket open];
}
- (void)stop
{
_socket.delegate = nil;
[_socket closeWithCode:1000 reason:@"Invalidated"];
_socket = nil;
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didReceiveMessage:(id)message
{
if (_delegate) {
[_delegate webSocket:webSocket didReceiveMessage: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.delegate webSocket:webSocket didCloseWithCode:code reason:reason wasClean:wasClean];
[self reconnect];
}
@end
#endif