Objective C TCP 通讯实例
TCP通讯实例Communicator.h
[cpp]
#import <Foundation/Foundation.h>
@inte易做图ce Communicator : NSObject <NSStreamDelegate> {
@public
NSString *host;
int port;
}
- (void)setup;
- (void)open;
- (void)close;
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)event;
- (void)readIn:(NSString *)s;
- (void)writeOut:(NSString *)s;
@end
Communicator.m
[cpp]
#import "Communicator.h"
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
NSInputStream *inputStream;
NSOutputStream *outputStream;
@implementation Communicator
- (void)setup {
NSURL *url = [NSURL URLWithString:host];
NSLog(@"Setting up connection to %@ : %i", [url absoluteString], port);
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, (CFStringRef)[url host], port, &readStream, &writeStream);
if(!CFWriteStreamOpen(writeStream)) {
NSLog(@"Error, writeStream not open");
return;
}
[self open];
NSLog(@"Status of outputStream: %i", [outputStream streamStatus]);
return;
}
- (void)open {
NSLog(@"Opening streams.");
inputStream = (NSInputStream *)readStream;
outputStream = (NSOutputStream *)writeStream;
[inputStream retain];
[outputStream retain];
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
}
- (void)close {
NSLog(@"Closing streams.");
[inputStream close];
[outputStream close];
[inputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream setDelegate:nil];
[outputStream setDelegate:nil];
[inputStream release];
[outputStream release];
inputStream = nil;
outputStream = nil;
}
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)event {
NSLog(@"Stream triggered.");
switch(event) {
case NSStreamEventHasSpaceAvailable: {
if(stream == outputStream) {
NSLog(@"outputStream is ready.");
}
break;
}
case NSStreamEventHasBytesAvailable: {
if(stream == inputStream) {
NSLog(@"inputStream is ready.");
uint8_t buf[1024];
unsigned int len = 0;
len = [inputStream read:buf maxLength:1024];
if(len > 0) {
NSMutableData* data=[[NSMutableData alloc] initWithLength:0];
[data appendBytes: (const void *)buf length:len];
NSString *s = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
[self readIn:s];
[data release];
}
}
break;
}
default: {
NSLog(@"Stream is sending an Event: %i", event);
break;
}
}
}
- (void)readIn:(NSString *)s {
NSLog(@"Reading in the following:");
NSLog
补充：软件开发 , C++ ,
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