Пример iOS-приложения для аудиозвонков

Работа с кодом примера

Для разбора кода возьмем версию примера PhoneMin, которая доступена для скачивания в сборке 2.5.2.

Класс для основного вида приложения: ViewController (заголовочный файл ViewController.h; файл имплементации ViewController.m).

1. Импорт API. код

#import <FPWCSApi2/FPWCSApi2.h>


2. Подключение к серверу.

FPWCSApi2 createSession, FPWCSApi2Session connect код
В параметрах сессии указываются:

FPWCSApi2SessionOptions *options = [[FPWCSApi2SessionOptions alloc] init];
options.urlServer = _connectUrl.text;
options.sipRegisterRequired = _sipRegRequired.control.isOn;
options.sipLogin = _sipLogin.input.text;
options.sipAuthenticationName = _sipAuthName.input.text;
options.sipPassword = _sipPassword.input.text;
options.sipDomain = _sipDomain.input.text;
options.sipOutboundProxy = _sipOutboundProxy.input.text;
options.sipPort = [NSNumber numberWithInteger: [_sipPort.input.text integerValue]];
options.appKey = @"defaultApp";
NSError *error;
if (!options.sipLogin.length || !options.sipAuthenticationName.length || !options.sipPassword.length ||
     !options.sipDomain.length || !options.sipOutboundProxy.length || options.sipPort.integerValue == 0) {
    UIAlertController * alert = [UIAlertController
                                 alertControllerWithTitle:@"All Sip Credentials is required"
                                 message:error.localizedDescription
                                 preferredStyle:UIAlertControllerStyleAlert];
        
    UIAlertAction* okButton = [UIAlertAction
                               actionWithTitle:@"Ok"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action) {
                                   [self onDisconnected];
                               }];
        
    [alert addAction:okButton];
    [self presentViewController:alert animated:YES completion:nil];
    return nil;
}
session = [FPWCSApi2 createSession:options error:&error];
if (error) {
    UIAlertController * alert = [UIAlertController
                                 alertControllerWithTitle:@"Failed to connect"
                                 message:error.localizedDescription
                                 preferredStyle:UIAlertControllerStyleAlert];
        
    UIAlertAction* okButton = [UIAlertAction
                               actionWithTitle:@"Ok"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action) {
                                   [self onDisconnected];
                               }];
        
    [alert addAction:okButton];
    [self presentViewController:alert animated:YES completion:nil];
    return nil;
}
...
[session connect];


3. Исходящий звонок.

FPWCSApi2Session createCall, FPWCSApi2Call call код

При создании звонка в метод createCall передаются параметры:

- (FPWCSApi2Call *)call {
    FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
    FPWCSApi2CallOptions *options = [[FPWCSApi2CallOptions alloc] init];
    NSString *parameters = _inviteParameters.input.text;
    if (parameters && [parameters length] > 0) {
        NSError* err = nil;
        parameters = [parameters stringByReplacingOccurrencesOfString:@""" withString:@"\""];
        NSMutableDictionary *dictionary = [NSJSONSerialization JSONObjectWithData:[parameters dataUsingEncoding:NSUTF8StringEncoding] options:0 error:&err];
        if (err) {
            NSLog(@"Error converting JSON Invite parameters to dictionary %@, JSON %@", err, parameters);
        } else {
            options.inviteParameters = dictionary;
        }
    }
    options.callee = _callee.input.text;
    //used for only recv audio
//    options.localConstraints = [[FPWCSApi2MediaConstraints alloc] initWithAudio:NO video:NO];
//    options.remoteConstraints = [[FPWCSApi2MediaConstraints alloc] initWithAudio:YES video:NO];
    NSError *error;
    call = [session createCall:options error:&error];
    if (!call) {
        UIAlertController * alert = [UIAlertController
                                     alertControllerWithTitle:@"Failed to create call"
                                     message:error.localizedDescription
                                     preferredStyle:UIAlertControllerStyleAlert];
        
        UIAlertAction* okButton = [UIAlertAction
                                   actionWithTitle:@"Ok"
                                   style:UIAlertActionStyleDefault
                                   handler:^(UIAlertAction * action) {
                                       [self toCallState];
                                   }];
        
        [alert addAction:okButton];
        [self presentViewController:alert animated:YES completion:nil];
        return nil;
    }

    [call on:kFPWCSCallStatusBusy callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
    }];
    
    [call on:kFPWCSCallStatusFailed callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
    }];
    
    [call on:kFPWCSCallStatusRing callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toHangupState];
    }];
    
    [call on:kFPWCSCallStatusHold callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self changeViewState:_holdButton enabled:YES];
    }];
    
    [call on:kFPWCSCallStatusEstablished callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toHangupState];
        [self changeViewState:_holdButton enabled:YES];
    }];
    
    [call on:kFPWCSCallStatusFinish callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
    }];
    
    [call call];
    return call;
}


4. Получение от сервера события, сигнализирующего о входящем звонке

FPWCSApi2Session onIncomingCallCallback код

[session onIncomingCallCallback:^(FPWCSApi2Call *rCall) {
    call = rCall;
        
    [call on:kFPWCSCallStatusBusy callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
    }];
        
    [call on:kFPWCSCallStatusFailed callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
    }];
        
    [call on:kFPWCSCallStatusRing callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toHangupState];
    }];
        
    [call on:kFPWCSCallStatusHold callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self changeViewState:_holdButton enabled:YES];
    }];
        
    [call on:kFPWCSCallStatusEstablished callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toHangupState];
        [self changeViewState:_holdButton enabled:YES];
    }];
        
    [call on:kFPWCSCallStatusFinish callback:^(FPWCSApi2Call *call){
        [self changeCallStatus:call];
        [self toCallState];
        [self dismissViewControllerAnimated:YES completion:nil];
    }];
    ...
}];


5. Ответ на входящий звонок.

FPWCSApi2Call answer код

alert = [UIAlertController
                             alertControllerWithTitle:[NSString stringWithFormat:@"Incoming call from '%@'", [rCall getCallee]]
                             message:error.localizedDescription
                             preferredStyle:UIAlertControllerStyleAlert];
        
UIAlertAction* answerButton = [UIAlertAction
                               actionWithTitle:@"Answer"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action) {
                                   [call answer];
                               }];
        
[alert addAction:answerButton];
UIAlertAction* hangupButton = [UIAlertAction
                               actionWithTitle:@"Hangup"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action) {
                                   [call hangup];
                               }];
        
[alert addAction:hangupButton];
[self presentViewController:alert animated:YES completion:nil];


6. Удержание звонка.

FPWCSApi2Call hold, unhold код

- (void)holdButton:(UIButton *)button {
    [self changeViewState:button enabled:NO];
    if ([button.titleLabel.text isEqualToString:@"UNHOLD"]) {
        if (call) {
            [call unhold];
            [_holdButton setTitle:@"HOLD" forState:UIControlStateNormal];
        }
    } else {
        if (call) {
            [call hold];
            [_holdButton setTitle:@"UNHOLD" forState:UIControlStateNormal];
        }
    }
}


7. Отправка тонального сигнала

FPWCSApi2Call sendDTMF код

- (void)dtmfButton:(UIButton *)button {
    if (call) {
        [call sendDTMF:_dtmf.input.text type:kFPWCSCallDTMFRFC2833];
    }
}


8. Завершение исходящего звонка.

FPWCSApi2Call hangup код

- (void)callButton:(UIButton *)button {
    [self changeViewState:button enabled:NO];
    if ([button.titleLabel.text isEqualToString:@"HANGUP"]) {
        if ([FPWCSApi2 getSessions].count) {
            [call hangup];
        } else {
            [self toCallState];
        }
    } else {
        if ([FPWCSApi2 getSessions].count) {
            [self call];
        } else {
            [self toCallState];
        }
    }
}


9. Завершение входящего звонка.

FPWCSApi2Call hangup код

UIAlertAction* hangupButton = [UIAlertAction
                               actionWithTitle:@"Hangup"
                               style:UIAlertActionStyleDefault
                               handler:^(UIAlertAction * action) {
                                   [call hangup];
                               }];
        
[alert addAction:hangupButton];


10. Закрытие соединения.

FPWCSApi2Session disconnect код

- (void)connectButton:(UIButton *)button {
    [self changeViewState:button enabled:NO];
    if ([button.titleLabel.text isEqualToString:@"DISCONNECT"]) {
        if ([FPWCSApi2 getSessions].count) {
            FPWCSApi2Session *session = [FPWCSApi2 getSessions][0];
            NSLog(@"Disconnect session with server %@", [session getServerUrl]);
            [session disconnect];
        } else {
            NSLog(@"Nothing to disconnect");
            [self onDisconnected];
        }
    } else {
        //todo check url is not empty
        [self changeViewState:_connectUrl enabled:NO];
        [self changeViewState:_sipLogin.input enabled:NO];
        [self changeViewState:_sipAuthName.input enabled:NO];
        [self changeViewState:_sipPassword.input enabled:NO];
        [self changeViewState:_sipDomain.input enabled:NO];
        [self changeViewState:_sipOutboundProxy.input enabled:NO];
        [self changeViewState:_sipRegRequired.control enabled:NO];
        [self changeViewState:_sipPort.input enabled:NO];
        [self connect];
    }
}