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Pods/LookinServer/Src/Main/Server/Connection/LKS_ConnectionManager.m
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268
Pods/LookinServer/Src/Main/Server/Connection/LKS_ConnectionManager.m
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#ifdef SHOULD_COMPILE_LOOKIN_SERVER
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//
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// LookinServer.m
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// LookinServer
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//
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// Created by Li Kai on 2018/8/5.
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// https://lookin.work
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//
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#import "LKS_ConnectionManager.h"
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#import "Lookin_PTChannel.h"
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#import "LKS_RequestHandler.h"
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#import "LookinConnectionResponseAttachment.h"
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#import "LKS_ExportManager.h"
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#import "LookinServerDefines.h"
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#import "LKS_TraceManager.h"
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#import "LKS_MultiplatformAdapter.h"
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NSString *const LKS_ConnectionDidEndNotificationName = @"LKS_ConnectionDidEndNotificationName";
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@interface LKS_ConnectionManager () <Lookin_PTChannelDelegate>
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@property(nonatomic, weak) Lookin_PTChannel *peerChannel_;
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@property(nonatomic, strong) LKS_RequestHandler *requestHandler;
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@end
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@implementation LKS_ConnectionManager
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+ (instancetype)sharedInstance {
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static LKS_ConnectionManager *sharedInstance;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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sharedInstance = [[LKS_ConnectionManager alloc] init];
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});
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return sharedInstance;
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}
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+ (void)load {
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// 触发 init 方法
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[LKS_ConnectionManager sharedInstance];
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}
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- (instancetype)init {
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if (self = [super init]) {
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NSLog(@"LookinServer - Will launch. Framework version: %@", LOOKIN_SERVER_READABLE_VERSION);
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleApplicationDidBecomeActive) name:UIApplicationDidBecomeActiveNotification object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleWillResignActiveNotification) name:UIApplicationWillResignActiveNotification object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleLocalInspect:) name:@"Lookin_2D" object:nil];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_handleLocalInspect:) name:@"Lookin_3D" object:nil];
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[[NSNotificationCenter defaultCenter] addObserverForName:@"Lookin_Export" object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification * _Nonnull note) {
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[[LKS_ExportManager sharedInstance] exportAndShare];
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}];
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[[NSNotificationCenter defaultCenter] addObserverForName:@"Lookin_RelationSearch" object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification * _Nonnull note) {
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[[LKS_TraceManager sharedInstance] addSearchTarger:note.object];
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}];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleGetLookinInfo:) name:@"GetLookinInfo" object:nil];
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self.requestHandler = [LKS_RequestHandler new];
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}
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return self;
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}
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- (void)_handleWillResignActiveNotification {
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self.applicationIsActive = NO;
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if (self.peerChannel_ && ![self.peerChannel_ isConnected]) {
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[self.peerChannel_ close];
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self.peerChannel_ = nil;
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}
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}
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- (void)_handleApplicationDidBecomeActive {
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self.applicationIsActive = YES;
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[self searchPortToListenIfNoConnection];
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}
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- (void)searchPortToListenIfNoConnection {
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if ([self.peerChannel_ isConnected]) {
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NSLog(@"LookinServer - Abort to search ports. Already has connected channel.");
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return;
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}
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NSLog(@"LookinServer - Searching port to listen...");
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[self.peerChannel_ close];
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self.peerChannel_ = nil;
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if ([self isiOSAppOnMac]) {
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[self _tryToListenOnPortFrom:LookinSimulatorIPv4PortNumberStart to:LookinSimulatorIPv4PortNumberEnd current:LookinSimulatorIPv4PortNumberStart];
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} else {
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[self _tryToListenOnPortFrom:LookinUSBDeviceIPv4PortNumberStart to:LookinUSBDeviceIPv4PortNumberEnd current:LookinUSBDeviceIPv4PortNumberStart];
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}
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}
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- (BOOL)isiOSAppOnMac {
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#if TARGET_OS_SIMULATOR
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return YES;
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#else
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if (@available(iOS 14.0, *)) {
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// isiOSAppOnMac 这个 API 看似在 iOS 14.0 上可用，但其实在 iOS 14 beta 上是不存在的、有 unrecognized selector 问题，因此这里要用 respondsToSelector 做一下保护
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NSProcessInfo *info = [NSProcessInfo processInfo];
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if ([info respondsToSelector:@selector(isiOSAppOnMac)]) {
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return [info isiOSAppOnMac];
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} else if ([info respondsToSelector:@selector(isMacCatalystApp)]) {
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return [info isMacCatalystApp];
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} else {
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return NO;
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}
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}
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if (@available(iOS 13.0, tvOS 13.0, *)) {
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return [NSProcessInfo processInfo].isMacCatalystApp;
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}
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return NO;
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#endif
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}
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- (void)_tryToListenOnPortFrom:(int)fromPort to:(int)toPort current:(int)currentPort {
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Lookin_PTChannel *channel = [Lookin_PTChannel channelWithDelegate:self];
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channel.targetPort = currentPort;
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[channel listenOnPort:currentPort IPv4Address:INADDR_LOOPBACK callback:^(NSError *error) {
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if (error) {
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if (error.code == 48) {
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// 该地址已被占用
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} else {
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// 未知失败
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}
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if (currentPort < toPort) {
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// 尝试下一个端口
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NSLog(@"LookinServer - 127.0.0.1:%d is unavailable(%@). Will try anothor address ...", currentPort, error);
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[self _tryToListenOnPortFrom:fromPort to:toPort current:(currentPort + 1)];
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} else {
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// 所有端口都尝试完毕，全部失败
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NSLog(@"LookinServer - 127.0.0.1:%d is unavailable(%@).", currentPort, error);
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NSLog(@"LookinServer - Connect failed in the end.");
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}
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} else {
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// 成功
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NSLog(@"LookinServer - Connected successfully on 127.0.0.1:%d", currentPort);
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// 此时 peerChannel_ 状态为 listening
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self.peerChannel_ = channel;
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}
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}];
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}
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- (void)dealloc {
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if (self.peerChannel_) {
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[self.peerChannel_ close];
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}
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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- (void)respond:(LookinConnectionResponseAttachment *)data requestType:(uint32_t)requestType tag:(uint32_t)tag {
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[self _sendData:data frameOfType:requestType tag:tag];
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}
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- (void)pushData:(NSObject *)data type:(uint32_t)type {
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[self _sendData:data frameOfType:type tag:0];
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}
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- (void)_sendData:(NSObject *)data frameOfType:(uint32_t)frameOfType tag:(uint32_t)tag {
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if (self.peerChannel_) {
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NSData *archivedData = [NSKeyedArchiver archivedDataWithRootObject:data];
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dispatch_data_t payload = [archivedData createReferencingDispatchData];
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[self.peerChannel_ sendFrameOfType:frameOfType tag:tag withPayload:payload callback:^(NSError *error) {
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if (error) {
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}
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}];
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}
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}
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#pragma mark - Lookin_PTChannelDelegate
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- (BOOL)ioFrameChannel:(Lookin_PTChannel*)channel shouldAcceptFrameOfType:(uint32_t)type tag:(uint32_t)tag payloadSize:(uint32_t)payloadSize {
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if (channel != self.peerChannel_) {
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return NO;
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} else if ([self.requestHandler canHandleRequestType:type]) {
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return YES;
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} else {
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[channel close];
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return NO;
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}
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}
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- (void)ioFrameChannel:(Lookin_PTChannel*)channel didReceiveFrameOfType:(uint32_t)type tag:(uint32_t)tag payload:(Lookin_PTData*)payload {
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id object = nil;
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if (payload) {
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id unarchivedObject = [NSKeyedUnarchiver unarchiveObjectWithData:[NSData dataWithContentsOfDispatchData:payload.dispatchData]];
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if ([unarchivedObject isKindOfClass:[LookinConnectionAttachment class]]) {
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LookinConnectionAttachment *attachment = (LookinConnectionAttachment *)unarchivedObject;
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object = attachment.data;
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} else {
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object = unarchivedObject;
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}
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}
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[self.requestHandler handleRequestType:type tag:tag object:object];
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}
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/// 当 Client 端链接成功时，该方法会被调用，然后 channel 的状态会变成 connected
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- (void)ioFrameChannel:(Lookin_PTChannel*)channel didAcceptConnection:(Lookin_PTChannel*)otherChannel fromAddress:(Lookin_PTAddress*)address {
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NSLog(@"LookinServer - channel:%@, acceptConnection:%@", channel.debugTag, otherChannel.debugTag);
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Lookin_PTChannel *previousChannel = self.peerChannel_;
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otherChannel.targetPort = address.port;
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self.peerChannel_ = otherChannel;
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[previousChannel cancel];
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}
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/// 当连接过 Lookin 客户端，然后 Lookin 客户端又被关闭时，会走到这里
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- (void)ioFrameChannel:(Lookin_PTChannel*)channel didEndWithError:(NSError*)error {
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if (self.peerChannel_ != channel) {
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// Client 端第一次连接上时，之前 listen 的 port 会被 Peertalk 内部 cancel（并在 didAcceptConnection 方法里给业务抛一个新建的 connected 状态的 channel），那个被 cancel 的 channel 会走到这里
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NSLog(@"LookinServer - Ignore channel%@ end.", channel.debugTag);
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return;
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}
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// Client 端关闭时，会走到这里
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NSLog(@"LookinServer - channel%@ DidEndWithError:%@", channel.debugTag, error);
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[[NSNotificationCenter defaultCenter] postNotificationName:LKS_ConnectionDidEndNotificationName object:self];
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[self searchPortToListenIfNoConnection];
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}
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#pragma mark - Handler
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- (void)_handleLocalInspect:(NSNotification *)note {
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UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Lookin" message:@"Failed to run local inspection. The feature has been removed. Please use the computer version of Lookin or consider SDKs like FLEX for similar functionality." preferredStyle:UIAlertControllerStyleAlert];
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UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:nil];
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[alertController addAction:okAction];
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UIWindow *keyWindow = [LKS_MultiplatformAdapter keyWindow];
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UIViewController *rootViewController = [keyWindow rootViewController];
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[rootViewController presentViewController:alertController animated:YES completion:nil];
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NSLog(@"LookinServer - Failed to run local inspection. The feature has been removed. Please use the computer version of Lookin or consider SDKs like FLEX for similar functionality.");
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}
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- (void)handleGetLookinInfo:(NSNotification *)note {
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NSDictionary* userInfo = note.userInfo;
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if (!userInfo) {
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return;
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}
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NSMutableDictionary* infoWrapper = userInfo[@"infos"];
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if (![infoWrapper isKindOfClass:[NSMutableDictionary class]]) {
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NSLog(@"LookinServer - GetLookinInfo failed. Params invalid.");
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return;
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}
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infoWrapper[@"lookinServerVersion"] = LOOKIN_SERVER_READABLE_VERSION;
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}
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@end
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/// 这个类使得用户可以通过 NSClassFromString(@"Lookin") 来判断 LookinServer 是否被编译进了项目里
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@interface Lookin : NSObject
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@end
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@implementation Lookin
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@end
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#endif /* SHOULD_COMPILE_LOOKIN_SERVER */
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