//  PortMapperTest.m

//  MYNetwork

//

//  Created by Jens Alfke on 1/4/08.

//  Copyright 2008 Jens Alfke. All rights reserved.

//

#import "MYPortMapper.h"

#import "IPAddress.h"

#import "Test.h"

#import "Logging.h"

#if DEBUG

/** A trivial class that just demonstrates how to create a MYPortMapper and listen for changes. */

@interface MYPortMapperTest : NSObject

{

    MYPortMapper *_mapper;

}

@end

@implementation MYPortMapperTest

- (id) init

{

    self = [super init];

    if( self ) {

        // Create MYPortMapper. This example doesn't open a real socket; just pretend that there's

        // already a TCP socket listening on port 8080. To experiment, you could turn on Web

        // Sharing, then change this port number to 80 -- that will make your computer's local

        // Apache web server reachable from the outside world while this program is running.

        _mapper = [[MYPortMapper alloc] initWithLocalPort: 80];

        // Optionally, request a public port number.

        // The NAT is free to ignore this and return a random number instead.

        _mapper.desiredPublicPort = 22222;

        // Now open the mapping (asynchronously):

        if( [_mapper open] ) {

            Log(@"Opening port mapping...");

            // Now listen for notifications to find out when the mapping opens, fails, or changes:

            [[NSNotificationCenter defaultCenter] addObserver: self 

                                                     selector: @selector(portMappingChanged:) 

                                                         name: MYPortMapperChangedNotification 

                                                       object: _mapper];

        } else {

            // MYPortMapper failed -- this is unlikely, but be graceful:

            Log(@"!! Error: MYPortMapper wouldn't start: %i",_mapper.error);

            [self release];

            return nil;

        }

    }

    return self;

}

- (void) portMappingChanged: (NSNotification*)n

{

    // This is where we get notified that the mapping was created, or that no mapping exists,

    // or that mapping failed.

    if( _mapper.error )

        Log(@"!! MYPortMapper error %i", _mapper.error);

    else {

        NSString *message = @"";

        if( !_mapper.isMapped )

            message = @" (no address translation!)";

        Log(@"** Public address:port is %@%@", _mapper.publicAddress, message);

        Log(@"    local address:port is %@", _mapper.localAddress);

    }

}

- (void) dealloc

{

    [_mapper close];

    [_mapper release];

    [super dealloc];

}

@end

TestCase(MYPortMapper) {

    EnableLogTo(PortMapper,YES);

    // Here's how to simply obtain your local and public address(es):

    IPAddress *addr = [IPAddress localAddress];

    Log(@"** Local address is %@%@ ...getting public addr...", 

        addr, (addr.isPrivate ?@" (private)" :@""));

    addr = [MYPortMapper findPublicAddress];

    Log(@"** Public address is %@", addr);

    // Start up the test class to create a mapping:

    MYPortMapperTest *test = [[MYPortMapperTest alloc] init];

    // Now let the runloop run forever...

    Log(@"Running the runloop forever...");

    [[NSRunLoop currentRunLoop] run];

    [test release];

}

#endif DEBUG