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我正在使用连接到简单c socket服务器的NSStream进行聊天应用程序。流成功连接并发送数据，但无法接收数据。下面是一个使用NSStreams我的Socket类：NSStream无法接收数据
socket.h中
@interface Socket : NSObject <NSStreamDelegate>
- (void)connectToServerWithIP:(NSString *)ip andPort:(int)port;
- (NSString *)sendMessage:(NSString *)outgoingMessage;
@end
Socket.m
#import "Socket.h"
@interface Socket()
@property (strong, nonatomic) NSInputStream *inputStream;
@property (strong, nonatomic) NSOutputStream *outputStream;
@property (strong, nonatomic) NSString *output;
@end
@implementation Socket
@synthesize inputStream;
@synthesize outputStream;
@synthesize output;
- (void)connectToServerWithIP:(NSString *)ip andPort:(int)port
{
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef)ip, port, &readStream, &writeStream);
inputStream = (__bridge_transfer NSInputStream *)readStream;
outputStream = (__bridge_transfer NSOutputStream *)writeStream;
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
}
- (NSString *)sendMessage:(NSString *)outgoingMessage
{
NSData *messageData = [outgoingMessage dataUsingEncoding:NSUTF8StringEncoding];
const void *bytes = [messageData bytes];
uint8_t *uint8_t_message = (uint8_t*)bytes;
[outputStream write:uint8_t_message maxLength:strlen([outgoingMessage cStringUsingEncoding:[NSString defaultCStringEncoding]])];
while (![inputStream hasBytesAvailable]) {
usleep(10);
}
uint8_t buffer[1024];
[inputStream read:buffer maxLength:1023];
NSString *outputString = [NSString stringWithUTF8String:(char *)buffer];
return outputString;
}
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {
NSLog(@"Stream Event: %lu", streamEvent);
switch (streamEvent) {
case NSStreamEventOpenCompleted:
NSLog(@"Stream opened");
break;
case NSStreamEventHasBytesAvailable:
if (theStream == inputStream) {
uint8_t buffer[1024];
long len;
while ([inputStream hasBytesAvailable]) {
len = [inputStream read:buffer maxLength:sizeof(buffer)];
if (len > 0) {
output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding];
if (output) {
NSLog(@"Data: %@", output);
}
}
}
}
break;
case NSStreamEventErrorOccurred:
NSLog(@"Can not connect to the host!");
break;
case NSStreamEventEndEncountered:
[theStream close];
[theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
theStream = nil;
break;
default:
NSLog(@"Unknown event");
}
}
@end
ChatViewController.m
//
// ChatViewController.m
// Chat
//
// Created by James Pickering on 10/5/13.
// Copyright (c) 2013 James Pickering. All rights reserved.
//
#import "ChatViewController.h"
#import "LoginViewController.h"
#import "StatusView.h"
@interface ChatViewController()
@property (strong) IBOutlet NSTableView *people;
@property (strong) IBOutlet NSTextField *message;
@property (strong) IBOutlet NSButton *send;
@property (strong) IBOutlet NSButton *loginButton;
@property (strong) IBOutlet NSButton *settingsButton;
@property (strong) IBOutlet NSButton *panicButton;
@property (strong, nonatomic) NSString *recievedText;
@property (strong, nonatomic) NSMutableArray *tableData;
@property (strong, nonatomic) NSInputStream *inputStream;
@property (strong, nonatomic) NSOutputStream *outputStream;
- (void)openChat:(id)sender;
- (IBAction)panic:(id)sender;
- (IBAction)loginToChat:(id)sender;
@end
@implementation ChatViewController
@synthesize sock;
@synthesize recievedText;
@synthesize inputStream;
@synthesize outputStream;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.isLoggedIn = FALSE;
sock = [[Socket alloc] init];
[sock connectToServerWithIP:@"127.0.0.1" andPort:5001];
//[self updateUI];
}
return self;
}
- (void)updateUI
{
if (self.isLoggedIn) {
recievedText = [sock sendMessage:@"getPeople"];
self.tableData = [[NSMutableArray alloc] initWithArray:[recievedText componentsSeparatedByString:@";"]];
NSLog(@"%@", self.tableData);
[self.people reloadData];
}
}
- (void)openChat:(id)sender
{
NSLog(@"tru");
}
- (IBAction)panic:(id)sender {
}
- (IBAction)loginToChat:(id)sender {
NSLog(@"Called");
if (self.loginPopover == nil) {
NSLog(@"Login Popover is nil");
self.loginPopover = [[NSPopover alloc] init];
self.loginPopover.contentViewController = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:nil];
}
if (!self.loginPopover.isShown) {
NSLog(@"Login Popover is opening");
[self.loginButton setTitle:@"Cancel"];
[self.settingsButton setEnabled:NO];
[self.send setEnabled:NO];
[self.message setEnabled:NO];
[self.loginPopover showRelativeToRect:self.loginButton.frame ofView:self.view preferredEdge:NSMinYEdge];
}
else {
NSLog(@"Login Popover is closing");
[self.loginButton setTitle:@"Login"];
[self.settingsButton setEnabled:YES];
[self.send setEnabled:YES];
[self.message setEnabled:YES];
[self.loginPopover close];
}
}
- (NSInteger)numberOfRowsInTableView:(NSTableView *)aTableView
{
return [self.tableData count];
}
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex
{
return [self.tableData objectAtIndex:rowIndex];
}
- (BOOL)canBecomeKeyWindow
{
return YES;
}
- (BOOL)loginWithUsername:(NSString *)username andPassword:(NSString *)password
{
// Error happens here
recievedText = [sock sendMessage:@"login"];
if ([recievedText isEqualToString:@"roger"]) {
recievedText = [sock sendMessage:[NSString stringWithFormat:@"%@;%@", username, password]];
if ([recievedText isEqualToString:@"access granted"]) {
return YES;
}
else {
return NO;
}
}
else {
return NO;
}
}
@end
的问题是，它挂在这一行代码永远：while (![inputStream hasBytesAvailable]) {}，但我不知道为什么。服务器应该发回消息。
我面临同样的问题...任何解决方案？ –