BLIP/Demo/BLIPEchoClient.m
author Jens Alfke <jens@mooseyard.com>
Thu May 29 16:40:36 2008 -0700 (2008-05-29)
changeset 8 6f539dd9921c
parent 4 2bd9d60a2c46
child 26 cb9cdf247239
permissions -rw-r--r--
Got it to build on iPhone. (Haven't tried running it yet.)
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//
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//  BLIPEchoClient.m
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//  MYNetwork
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//
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//  Created by Jens Alfke on 5/24/08.
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//  Copyright 2008 Jens Alfke. All rights reserved.
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//  Adapted from Apple sample code "CocoaEcho":
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//  http://developer.apple.com/samplecode/CocoaEcho/index.html
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//
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#import "BLIPEchoClient.h"
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#import "BLIP.h"
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#import "Target.h"
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@implementation BLIPEchoClient
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@synthesize serviceList=_serviceList;
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- (void)awakeFromNib 
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{
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    _serviceBrowser = [[NSNetServiceBrowser alloc] init];
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    _serviceList = [[NSMutableArray alloc] init];
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    [_serviceBrowser setDelegate:self];
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    [_serviceBrowser searchForServicesOfType:@"_blipecho._tcp." inDomain:@""];
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}
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#pragma mark -
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#pragma mark NSNetServiceBrowser delegate methods
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// We broadcast the willChangeValueForKey: and didChangeValueForKey: for the NSTableView binding to work.
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- (void)netServiceBrowser:(NSNetServiceBrowser *)aNetServiceBrowser didFindService:(NSNetService *)aNetService moreComing:(BOOL)moreComing {
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    if (![_serviceList containsObject:aNetService]) {
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        [self willChangeValueForKey:@"serviceList"];
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        [_serviceList addObject:aNetService];
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        [self didChangeValueForKey:@"serviceList"];
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    }
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}
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- (void)netServiceBrowser:(NSNetServiceBrowser *)aNetServiceBrowser didRemoveService:(NSNetService *)aNetService moreComing:(BOOL)moreComing {
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    if ([_serviceList containsObject:aNetService]) {
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        [self willChangeValueForKey:@"serviceList"];
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        [_serviceList removeObject:aNetService];
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        [self didChangeValueForKey:@"serviceList"];
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    }
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}
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#pragma mark -
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#pragma mark BLIPConnection support
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/* Opens a BLIP connection to the given address. */
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- (void)openConnection: (NSNetService*)service 
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{
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    _connection = [[BLIPConnection alloc] initToNetService: service];
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    if( _connection )
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        [_connection open];
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    else
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        NSBeep();
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}
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/* Closes the currently open BLIP connection. */
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- (void)closeConnection
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{
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    [_connection close];
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    [_connection release];
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    _connection = nil;
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}
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#pragma mark -
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#pragma mark GUI action methods
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- (IBAction)serverClicked:(id)sender {
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    NSTableView * table = (NSTableView *)sender;
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    int selectedRow = [table selectedRow];
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    [self closeConnection];
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    if (-1 != selectedRow)
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        [self openConnection: [_serviceList objectAtIndex:selectedRow]];
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}
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/* Send a BLIP request containing the string in the textfield */
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- (IBAction)sendText:(id)sender 
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{
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    BLIPRequest *r = [_connection request];
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    r.bodyString = [sender stringValue];
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    BLIPResponse *response = [r send];
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    response.onComplete = $target(self,gotResponse:);
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}
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/* Receive the response to the BLIP request, and put its contents into the response field */
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- (void) gotResponse: (BLIPResponse*)response
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{
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    [responseField setObjectValue: response.bodyString];
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}    
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@end
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int main(int argc, char *argv[])
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{
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    return NSApplicationMain(argc,  (const char **) argv);
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}