react-native/Libraries/WebSocket/RCTReconnectingWebSocket.m

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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import "RCTReconnectingWebSocket.h"
#import <React/RCTConvert.h>
#import <React/RCTDefines.h>
#import <fishhook/fishhook.h>
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
#import <os/log.h>
#endif /* __IPHONE_11_0 */
#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 &&
strstr(buffer, "Connection has no connected handler") == NULL) {
orig_nwlog_legacy_v(level, format, args);
}
}
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
static void (*orig_os_log_error_impl)(void *dso, os_log_t log, os_log_type_t type, const char *format, uint8_t *buf, uint32_t size);
static void my_os_log_error_impl(void *dso, os_log_t log, os_log_type_t type, const char *format, uint8_t *buf, uint32_t size)
{
if (strstr(format, "TCP Conn %p Failed : error %ld:%d") == NULL) {
orig_os_log_error_impl(dso, log, type, format, buf, size);
}
}
#endif /* __IPHONE_11_0 */
@interface RCTReconnectingWebSocket () <RCTSRWebSocketDelegate>
@end
@implementation RCTReconnectingWebSocket {
NSURL *_url;
RCTSRWebSocket *_socket;
}
+ (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);
#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
rebind_symbols((struct rebinding[1]){
{"_os_log_error_impl", my_os_log_error_impl, (void *)&orig_os_log_error_impl}
}, 1);
#endif /* __IPHONE_11_0 */
});
}
- (instancetype)initWithURL:(NSURL *)url queue:(dispatch_queue_t)queue
{
if (self = [super init]) {
_url = url;
_delegateDispatchQueue = queue;
}
return self;
}
- (instancetype)initWithURL:(NSURL *)url
{
return [self initWithURL:url queue:dispatch_get_main_queue()];
}
- (void)send:(id)data
{
[_socket send:data];
}
- (void)start
{
[self stop];
_socket = [[RCTSRWebSocket alloc] initWithURL:_url];
_socket.delegate = self;
[_socket setDelegateDispatchQueue:_delegateDispatchQueue];
[_socket open];
}
- (void)stop
{
_socket.delegate = nil;
[_socket closeWithCode:1000 reason:@"Invalidated"];
_socket = nil;
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didReceiveMessage:(id)message
{
[_delegate reconnectingWebSocket:self 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)webSocketDidOpen:(RCTSRWebSocket *)webSocket
{
[_delegate reconnectingWebSocketDidOpen:self];
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didFailWithError:(NSError *)error
{
[_delegate reconnectingWebSocketDidClose:self];
[self reconnect];
}
- (void)webSocket:(RCTSRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
{
[_delegate reconnectingWebSocketDidClose:self];
[self reconnect];
}
@end
#endif