Adds trunk/talk folder of revision 359 from libjingles google code to
trunk/talk git-svn-id: http://webrtc.googlecode.com/svn/trunk@4318 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
henrike@webrtc.org
333
talk/examples/ios/AppRTCDemo/APPRTCAppClient.m
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333
talk/examples/ios/AppRTCDemo/APPRTCAppClient.m
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/*
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* libjingle
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* Copyright 2013, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "APPRTCAppClient.h"
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#import <dispatch/dispatch.h>
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#import "GAEChannelClient.h"
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#import "RTCIceServer.h"
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@interface APPRTCAppClient ()
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@property(nonatomic, strong) dispatch_queue_t backgroundQueue;
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@property(nonatomic, copy) NSString *baseURL;
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@property(nonatomic, strong) GAEChannelClient *gaeChannel;
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@property(nonatomic, copy) NSString *postMessageUrl;
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@property(nonatomic, copy) NSString *pcConfig;
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@property(nonatomic, strong) NSMutableString *receivedData;
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@property(atomic, strong) NSMutableArray *sendQueue;
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@property(nonatomic, copy) NSString *token;
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@property(nonatomic, assign) BOOL verboseLogging;
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@end
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@implementation APPRTCAppClient
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- (id)init {
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if (self = [super init]) {
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_backgroundQueue = dispatch_queue_create("RTCBackgroundQueue", NULL);
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_sendQueue = [NSMutableArray array];
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// Uncomment to see Request/Response logging.
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//_verboseLogging = YES;
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}
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return self;
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}
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#pragma mark - Public methods
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- (void)connectToRoom:(NSURL *)url {
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NSURLRequest *request = [self getRequestFromUrl:url];
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[NSURLConnection connectionWithRequest:request delegate:self];
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}
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- (void)sendData:(NSData *)data {
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@synchronized(self) {
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[self maybeLogMessage:@"Send message"];
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[self.sendQueue addObject:[data copy]];
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}
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[self requestQueueDrainInBackground];
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}
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#pragma mark - Internal methods
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- (NSTextCheckingResult *)findMatch:(NSString *)regexpPattern
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withString:(NSString *)string
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errorMessage:(NSString *)errorMessage {
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NSError *error;
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NSRegularExpression *regexp =
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[NSRegularExpression regularExpressionWithPattern:regexpPattern
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options:0
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error:&error];
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if (error) {
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[self maybeLogMessage:
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[NSString stringWithFormat:@"Failed to create regexp - %@",
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[error description]]];
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return nil;
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}
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NSRange fullRange = NSMakeRange(0, [string length]);
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NSArray *matches = [regexp matchesInString:string options:0 range:fullRange];
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if ([matches count] == 0) {
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if ([errorMessage length] > 0) {
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[self maybeLogMessage:string];
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[self showMessage:
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[NSString stringWithFormat:@"Missing %@ in HTML.", errorMessage]];
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}
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return nil;
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} else if ([matches count] > 1) {
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if ([errorMessage length] > 0) {
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[self maybeLogMessage:string];
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[self showMessage:[NSString stringWithFormat:@"Too many %@s in HTML.",
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errorMessage]];
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}
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return nil;
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}
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return matches[0];
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}
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- (NSURLRequest *)getRequestFromUrl:(NSURL *)url {
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self.receivedData = [NSMutableString stringWithCapacity:20000];
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NSString *path =
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[NSString stringWithFormat:@"https:%@", [url resourceSpecifier]];
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NSURLRequest *request =
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[NSURLRequest requestWithURL:[NSURL URLWithString:path]];
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return request;
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}
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- (void)maybeLogMessage:(NSString *)message {
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if (self.verboseLogging) {
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NSLog(@"%@", message);
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}
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}
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- (void)requestQueueDrainInBackground {
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dispatch_async(self.backgroundQueue, ^(void) {
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// TODO(hughv): This can block the UI thread. Fix.
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@synchronized(self) {
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if ([self.postMessageUrl length] < 1) {
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return;
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}
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for (NSData *data in self.sendQueue) {
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NSString *url = [NSString stringWithFormat:@"%@/%@",
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self.baseURL,
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self.postMessageUrl];
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[self sendData:data withUrl:url];
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}
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[self.sendQueue removeAllObjects];
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}
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});
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}
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- (void)sendData:(NSData *)data withUrl:(NSString *)url {
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NSMutableURLRequest *request =
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[NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];
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request.HTTPMethod = @"POST";
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[request setHTTPBody:data];
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NSURLResponse *response;
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NSError *error;
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NSData *responseData = [NSURLConnection sendSynchronousRequest:request
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returningResponse:&response
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error:&error];
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NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
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int status = [httpResponse statusCode];
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NSAssert(status == 200,
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@"Bad response [%d] to message: %@\n\n%@",
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status,
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[NSString stringWithUTF8String:[data bytes]],
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[NSString stringWithUTF8String:[responseData bytes]]);
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}
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- (void)showMessage:(NSString *)message {
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NSLog(@"%@", message);
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UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Unable to join"
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message:message
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delegate:nil
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cancelButtonTitle:@"OK"
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otherButtonTitles:nil];
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[alertView show];
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}
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- (void)updateIceServers:(NSMutableArray *)iceServers
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withTurnServer:(NSString *)turnServerUrl {
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if ([turnServerUrl length] < 1) {
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[self.iceServerDelegate onIceServers:iceServers];
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return;
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}
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dispatch_async(self.backgroundQueue, ^(void) {
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NSMutableURLRequest *request = [NSMutableURLRequest
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requestWithURL:[NSURL URLWithString:turnServerUrl]];
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[request addValue:@"Mozilla/5.0" forHTTPHeaderField:@"user-agent"];
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[request addValue:@"https://apprtc.appspot.com"
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forHTTPHeaderField:@"origin"];
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NSURLResponse *response;
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NSError *error;
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NSData *responseData = [NSURLConnection sendSynchronousRequest:request
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returningResponse:&response
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error:&error];
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if (!error) {
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NSDictionary *json = [NSJSONSerialization JSONObjectWithData:responseData
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options:0
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error:&error];
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NSAssert(!error, @"Unable to parse. %@", error.localizedDescription);
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NSString *username = json[@"username"];
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NSString *turnServer = json[@"turn"];
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NSString *password = json[@"password"];
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NSString *fullUrl =
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[NSString stringWithFormat:@"turn:%@@%@", username, turnServer];
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RTCIceServer *iceServer =
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[[RTCIceServer alloc] initWithUri:[NSURL URLWithString:fullUrl]
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password:password];
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[iceServers addObject:iceServer];
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} else {
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NSLog(@"Unable to get TURN server. Error: %@", error.description);
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}
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dispatch_async(dispatch_get_main_queue(), ^(void) {
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[self.iceServerDelegate onIceServers:iceServers];
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});
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});
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}
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#pragma mark - NSURLConnectionDataDelegate methods
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- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
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NSString *roomHtml = [NSString stringWithUTF8String:[data bytes]];
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[self maybeLogMessage:
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[NSString stringWithFormat:@"Received %d chars", [roomHtml length]]];
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[self.receivedData appendString:roomHtml];
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}
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- (void)connection:(NSURLConnection *)connection
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didReceiveResponse:(NSURLResponse *)response {
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NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
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int statusCode = [httpResponse statusCode];
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[self maybeLogMessage:
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[NSString stringWithFormat:
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@"Response received\nURL\n%@\nStatus [%d]\nHeaders\n%@",
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[httpResponse URL],
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statusCode,
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[httpResponse allHeaderFields]]];
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NSAssert(statusCode == 200, @"Invalid response of %d received.", statusCode);
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}
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- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
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[self maybeLogMessage:[NSString stringWithFormat:@"finished loading %d chars",
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[self.receivedData length]]];
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NSTextCheckingResult *result =
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[self findMatch:@".*\n *Sorry, this room is full\\..*"
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withString:self.receivedData
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errorMessage:nil];
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if (result) {
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[self showMessage:@"Room full"];
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return;
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}
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NSString *fullUrl = [[[connection originalRequest] URL] absoluteString];
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NSRange queryRange = [fullUrl rangeOfString:@"?"];
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self.baseURL = [fullUrl substringToIndex:queryRange.location];
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[self maybeLogMessage:[NSString stringWithFormat:@"URL\n%@", self.baseURL]];
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result = [self findMatch:@".*\n *openChannel\\('([^']*)'\\);\n.*"
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withString:self.receivedData
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errorMessage:@"channel token"];
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if (!result) {
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return;
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}
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self.token = [self.receivedData substringWithRange:[result rangeAtIndex:1]];
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[self maybeLogMessage:[NSString stringWithFormat:@"Token\n%@", self.token]];
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result =
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[self findMatch:@".*\n *path = '/(message\\?r=.+)' \\+ '(&u=[0-9]+)';\n.*"
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withString:self.receivedData
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errorMessage:@"postMessage URL"];
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if (!result) {
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return;
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}
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self.postMessageUrl =
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[NSString stringWithFormat:@"%@%@",
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[self.receivedData substringWithRange:[result rangeAtIndex:1]],
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[self.receivedData substringWithRange:[result rangeAtIndex:2]]];
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[self maybeLogMessage:[NSString stringWithFormat:@"POST message URL\n%@",
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self.postMessageUrl]];
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result = [self findMatch:@".*\n *var pc_config = (\\{[^\n]*\\});\n.*"
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withString:self.receivedData
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errorMessage:@"pc_config"];
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if (!result) {
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return;
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}
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NSString *pcConfig =
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[self.receivedData substringWithRange:[result rangeAtIndex:1]];
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[self maybeLogMessage:
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[NSString stringWithFormat:@"PC Config JSON\n%@", pcConfig]];
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result = [self findMatch:@".*\n *requestTurn\\('([^\n]*)'\\);\n.*"
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withString:self.receivedData
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errorMessage:@"channel token"];
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NSString *turnServerUrl;
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if (result) {
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turnServerUrl =
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[self.receivedData substringWithRange:[result rangeAtIndex:1]];
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[self maybeLogMessage:
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[NSString stringWithFormat:@"TURN server request URL\n%@",
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turnServerUrl]];
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}
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NSError *error;
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NSData *pcData = [pcConfig dataUsingEncoding:NSUTF8StringEncoding];
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NSDictionary *json =
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[NSJSONSerialization JSONObjectWithData:pcData options:0 error:&error];
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NSAssert(!error, @"Unable to parse. %@", error.localizedDescription);
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NSArray *servers = [json objectForKey:@"iceServers"];
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NSMutableArray *iceServers = [NSMutableArray array];
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for (NSDictionary *server in servers) {
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NSString *url = [server objectForKey:@"url"];
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NSString *credential = [server objectForKey:@"credential"];
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if (!credential) {
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credential = @"";
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}
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[self maybeLogMessage:
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[NSString stringWithFormat:@"url [%@] - credential [%@]",
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url,
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credential]];
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RTCIceServer *iceServer =
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[[RTCIceServer alloc] initWithUri:[NSURL URLWithString:url]
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password:credential];
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[iceServers addObject:iceServer];
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}
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[self updateIceServers:iceServers withTurnServer:turnServerUrl];
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[self maybeLogMessage:
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[NSString stringWithFormat:@"About to open GAE with token: %@",
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self.token]];
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self.gaeChannel =
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[[GAEChannelClient alloc] initWithToken:self.token
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delegate:self.messageHandler];
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}
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@end
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