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/*
* Copyright 2014 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#import "ARDAppEngineClient.h"
#import "sdk/objc/base/RTCLogging.h"
#import "ARDJoinResponse.h"
#import "ARDMessageResponse.h"
#import "ARDSignalingMessage.h"
#import "ARDUtilities.h"
// TODO(tkchin): move these to a configuration object.
static NSString * const kARDRoomServerHostUrl =
@"https://appr.tc";
static NSString * const kARDRoomServerJoinFormat =
@"https://appr.tc/join/%@";
static NSString * const kARDRoomServerJoinFormatLoopback =
@"https://appr.tc/join/%@?debug=loopback";
static NSString * const kARDRoomServerMessageFormat =
@"https://appr.tc/message/%@/%@";
static NSString * const kARDRoomServerLeaveFormat =
@"https://appr.tc/leave/%@/%@";
static NSString * const kARDAppEngineClientErrorDomain = @"ARDAppEngineClient";
static NSInteger const kARDAppEngineClientErrorBadResponse = -1;
@implementation ARDAppEngineClient
#pragma mark - ARDRoomServerClient
- (void)joinRoomWithRoomId:(NSString *)roomId
isLoopback:(BOOL)isLoopback
completionHandler:(void (^)(ARDJoinResponse *response,
NSError *error))completionHandler {
NSParameterAssert(roomId.length);
NSString *urlString = nil;
if (isLoopback) {
urlString =
[NSString stringWithFormat:kARDRoomServerJoinFormatLoopback, roomId];
} else {
urlString =
[NSString stringWithFormat:kARDRoomServerJoinFormat, roomId];
}
NSURL *roomURL = [NSURL URLWithString:urlString];
RTCLog(@"Joining room:%@ on room server.", roomId);
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:roomURL];
request.HTTPMethod = @"POST";
[NSURLConnection sendAsyncRequest:request
completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
if (completionHandler) {
completionHandler(nil, error);
}
return;
}
ARDJoinResponse *joinResponse = [ARDJoinResponse responseFromJSONData:data];
if (!joinResponse) {
if (completionHandler) {
NSError *error = [[self class] badResponseError];
completionHandler(nil, error);
}
return;
}
if (completionHandler) {
completionHandler(joinResponse, nil);
}
}];
}
- (void)sendMessage:(ARDSignalingMessage *)message
forRoomId:(NSString *)roomId
clientId:(NSString *)clientId
completionHandler:(void (^)(ARDMessageResponse *response,
NSError *error))completionHandler {
NSParameterAssert(message);
NSParameterAssert(roomId.length);
NSParameterAssert(clientId.length);
NSData *data = [message JSONData];
NSString *urlString =
[NSString stringWithFormat:
kARDRoomServerMessageFormat, roomId, clientId];
NSURL *url = [NSURL URLWithString:urlString];
RTCLog(@"C->RS POST: %@", message);
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
request.HTTPBody = data;
[NSURLConnection sendAsyncRequest:request
completionHandler:^(NSURLResponse *response,
NSData *data,
NSError *error) {
if (error) {
if (completionHandler) {
completionHandler(nil, error);
}
return;
}
ARDMessageResponse *messageResponse =
[ARDMessageResponse responseFromJSONData:data];
if (!messageResponse) {
if (completionHandler) {
NSError *error = [[self class] badResponseError];
completionHandler(nil, error);
}
return;
}
if (completionHandler) {
completionHandler(messageResponse, nil);
}
}];
}
- (void)leaveRoomWithRoomId:(NSString *)roomId
clientId:(NSString *)clientId
completionHandler:(void (^)(NSError *error))completionHandler {
NSParameterAssert(roomId.length);
NSParameterAssert(clientId.length);
NSString *urlString =
[NSString stringWithFormat:kARDRoomServerLeaveFormat, roomId, clientId];
NSURL *url = [NSURL URLWithString:urlString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
request.HTTPMethod = @"POST";
RTCLog(@"C->RS: BYE");
__block NSError *error = nil;
// We want a synchronous request so that we know that we've left the room on
// room server before we do any further work.
dispatch_semaphore_t sem = dispatch_semaphore_create(0);
[NSURLConnection sendAsyncRequest:request
completionHandler:^(NSURLResponse *response, NSData *data, NSError *e) {
if (e) {
error = e;
}
dispatch_semaphore_signal(sem);
}];
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
if (error) {
RTCLogError(@"Error leaving room %@ on room server: %@", roomId, error.localizedDescription);
if (completionHandler) {
completionHandler(error);
}
return;
}
RTCLog(@"Left room:%@ on room server.", roomId);
if (completionHandler) {
completionHandler(nil);
}
}
#pragma mark - Private
+ (NSError *)badResponseError {
NSError *error =
[[NSError alloc] initWithDomain:kARDAppEngineClientErrorDomain
code:kARDAppEngineClientErrorBadResponse
userInfo:@{
NSLocalizedDescriptionKey: @"Error parsing response.",
}];
return error;
}
@end
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