MYNetwork: BLIP/Demo/BLIPEchoClient.m@2bd9d60a2c46 (annotated)

jens@3	1	//
jens@3	2	// BLIPEchoClient.m
jens@3	3	// MYNetwork
jens@3	4	//
jens@3	5	// Created by Jens Alfke on 5/24/08.
jens@3	6	// Copyright 2008 Jens Alfke. All rights reserved.
jens@4	7	// Adapted from Apple sample code "CocoaEcho":
jens@4	8	// http://developer.apple.com/samplecode/CocoaEcho/index.html
jens@3	9	//
jens@3	10
jens@3	11	#import "BLIPEchoClient.h"
jens@3	12	#import "BLIP.h"
jens@3	13	#import "IPAddress.h"
jens@3	14	#import "Target.h"
jens@3	15
jens@3	16
jens@3	17	@implementation BLIPEchoClient
jens@3	18
jens@3	19	@synthesize serviceList=_serviceList;
jens@3	20
jens@3	21	- (void)awakeFromNib
jens@3	22	{
jens@3	23	_serviceBrowser = [[NSNetServiceBrowser alloc] init];
jens@3	24	_serviceList = [[NSMutableArray alloc] init];
jens@3	25	[_serviceBrowser setDelegate:self];
jens@3	26
jens@3	27	[_serviceBrowser searchForServicesOfType:@"_blipecho._tcp." inDomain:@""];
jens@3	28	}
jens@3	29
jens@3	30	#pragma mark -
jens@3	31	#pragma mark BLIPConnection support
jens@3	32
jens@4	33	/* Opens a BLIP connection to the given address. */
jens@3	34	- (void)openConnection: (IPAddress*)address
jens@3	35	{
jens@3	36	_connection = [[BLIPConnection alloc] initToAddress: address];
jens@3	37	[_connection open];
jens@3	38	}
jens@3	39
jens@4	40	/* Closes the currently open BLIP connection. */
jens@3	41	- (void)closeConnection
jens@3	42	{
jens@3	43	[_connection close];
jens@3	44	[_connection release];
jens@3	45	_connection = nil;
jens@3	46	}
jens@3	47
jens@3	48	#pragma mark -
jens@3	49	#pragma mark NSNetServiceBrowser delegate methods
jens@3	50
jens@3	51	// We broadcast the willChangeValueForKey: and didChangeValueForKey: for the NSTableView binding to work.
jens@3	52
jens@3	53	- (void)netServiceBrowser:(NSNetServiceBrowser )aNetServiceBrowser didFindService:(NSNetService )aNetService moreComing:(BOOL)moreComing {
jens@3	54	if (![_serviceList containsObject:aNetService]) {
jens@3	55	[self willChangeValueForKey:@"serviceList"];
jens@3	56	[_serviceList addObject:aNetService];
jens@3	57	[self didChangeValueForKey:@"serviceList"];
jens@3	58	}
jens@3	59	}
jens@3	60
jens@3	61	- (void)netServiceBrowser:(NSNetServiceBrowser )aNetServiceBrowser didRemoveService:(NSNetService )aNetService moreComing:(BOOL)moreComing {
jens@3	62	if ([_serviceList containsObject:aNetService]) {
jens@3	63	[self willChangeValueForKey:@"serviceList"];
jens@3	64	[_serviceList removeObject:aNetService];
jens@3	65	[self didChangeValueForKey:@"serviceList"];
jens@3	66	}
jens@3	67	}
jens@3	68
jens@3	69	#pragma mark -
jens@3	70	#pragma mark NSNetService delegate methods
jens@3	71
jens@4	72	/* Stop any current Bonjour address resolution */
jens@3	73	- (void)stopResolving
jens@3	74	{
jens@3	75	if( _resolvingService ) {
jens@3	76	_resolvingService.delegate = nil;
jens@3	77	[_resolvingService stop];
jens@3	78	[_resolvingService release];
jens@3	79	_resolvingService = nil;
jens@3	80	}
jens@3	81	}
jens@3	82
jens@4	83	/* Ask Bonjour to resolve (look up) the IP address of the given service. */
jens@3	84	- (void)startResolving: (NSNetService*)service
jens@3	85	{
jens@3	86	[self stopResolving];
jens@3	87	_resolvingService = [service retain];
jens@3	88	_resolvingService.delegate = self;
jens@3	89	[_resolvingService resolveWithTimeout: 5.0];
jens@3	90
jens@3	91	}
jens@3	92
jens@4	93	/* NSNetService delegate method that will be called when address resolution finishes. */
jens@3	94	- (void)netServiceDidResolveAddress:(NSNetService *)sender
jens@3	95	{
jens@3	96	if( sender == _resolvingService ) {
jens@4	97	// Get the first address, which is an NSData containing a struct sockaddr:
jens@3	98	NSArray *addresses = _resolvingService.addresses;
jens@3	99	if( addresses.count > 0 ) {
jens@3	100	NSData *addressData = [addresses objectAtIndex: 0];
jens@3	101	IPAddress *address = [[IPAddress alloc] initWithSockAddr: addressData.bytes];
jens@3	102	[self openConnection: address];
jens@3	103	[address release];
jens@3	104	}
jens@3	105	[self stopResolving];
jens@3	106	}
jens@3	107	}
jens@3	108
jens@3	109	#pragma mark -
jens@3	110	#pragma mark GUI action methods
jens@3	111
jens@3	112	- (IBAction)serverClicked:(id)sender {
jens@3	113	NSTableView * table = (NSTableView *)sender;
jens@3	114	int selectedRow = [table selectedRow];
jens@3	115
jens@3	116	[self closeConnection];
jens@3	117	[self stopResolving];
jens@3	118
jens@3	119	if (-1 != selectedRow) {
jens@3	120	[self startResolving: [_serviceList objectAtIndex:selectedRow]];
jens@3	121	}
jens@3	122	}
jens@3	123
jens@4	124	/* Send a BLIP request containing the string in the textfield */
jens@3	125	- (IBAction)sendText:(id)sender
jens@3	126	{
jens@3	127	BLIPRequest *r = [_connection requestWithBody: nil];
jens@3	128	r.bodyString = [sender stringValue];
jens@3	129	BLIPResponse *response = [r send];
jens@3	130	response.onComplete = $target(self,gotResponse:);
jens@3	131	}
jens@3	132
jens@4	133	/* Receive the response to the BLIP request, and put its contents into the response field */
jens@3	134	- (void) gotResponse: (BLIPResponse*)response
jens@3	135	{
jens@3	136	[responseField setObjectValue: response.bodyString];
jens@3	137	}
jens@3	138
jens@3	139
jens@3	140	@end
jens@3	141
jens@3	142	int main(int argc, char *argv[])
jens@3	143	{
jens@3	144	return NSApplicationMain(argc, (const char **) argv);
jens@3	145	}

author	Jens Alfke <jens@mooseyard.com>
	Sun May 25 10:28:26 2008 -0700 (2008-05-25)
changeset 4	2bd9d60a2c46
parent 3	76f302097a75
child 7	5936db2c1987
permissions	-rw-r--r--