我正在玩 GCDAsyncSocket (MRC / iOS5.1) 一段时间，尤其是“大”文件 (5 - 10 mb)。不幸的是，有时读取流永远不会完成（例如，它被卡住了）只有几个字节在流的末尾；didReadPartialDataOfLength:停止向我提供信息并且根本didReadData没有被解雇。
这是我的一些代码（对于编写/阅读示例，主机和客户端之间的连接已经建立）
写作
#define kHeadTag 0
#define kDataTag 1
typedef struct {
NSUInteger size;
} head_t;
-(void)sendData:(NSData *)__data {
_sendData = [__data retain];
head_t header;
header.size = __data.length;
[_socket writeData:[NSData dataWithBytes:&header
length:sizeof(header)]
withTimeout:-1
tag:kHeadTag];
}
-(void)socket:(GCDAsyncSocket *)sock
didWriteDataWithTag:(long)tag {
if (tag == kHeadTag) {
[sock writeData:_sendData withTimeout:-1 tag:kDataTag];
[_sendData release];
_sendData = nil;
}
}
阅读
-(void)socket:(GCDAsyncSocket *)sock
didReadData:(NSData *)data
withTag:(long)tag {
switch (tag) {
// ------------------------------------- HEAD
case kHeadTag:{
head_t head;
[data getBytes:&head length:sizeof(head)];
_readHead = head;
NSLog(@"Received header (total size = %i bytes)", head.size);
[sock readDataToLength:head.size
withTimeout:-1
tag:kDataTag];
}
break;
// ------------------------------------- BODY
case kDataTag: {
NSLog(@"Data received with %i bytes", data.length);
[sock readDataToLength:sizeof(head_t) withTimeout:-1 tag:kHeadTag];
}
break;
}
};
-(void)socket:(GCDAsyncSocket *)sock
didReadPartialDataOfLength:(NSUInteger)partialLength
tag:(long)tag {
if (tag == kDataTag) {
NSLog(@"Data read with %i bytes", partialLength);
}
};
我希望这是足够的代码来查看我做错了什么，或者这对于写入/读取大块数据来说是一种不好的做法。