[英]SocketStream::read crashes
我們在NSInputStream中使用一個從IMAP服務器接收數據。 我們在無法重現的Xcodes崩潰中看到了嚴重崩潰。 InputStream像這樣初始化(我省略了一些健全性檢查):
- (void)getStreamsToServer:(NSString *)hostName
andPort:(NSUInteger)port
andInputStream:(NSInputStream **)inputStream
andOutputStream:(NSOutputStream **)outputStream
{
CFReadStreamRef readStream = NULL;
CFWriteStreamRef writeStream = NULL;
CFStreamCreatePairWithSocketToHost(NULL,
(__bridge CFStringRef)(hostName),
(unsigned int)port,
&readStream,
&writeStream);
*inputStream = (__bridge_transfer NSInputStream *)readStream;
*outputStream = (__bridge_transfer NSOutputStream *)writeStream;
}
稍后,我們將流升級到SSL:
[_inputStream setProperty:NSStreamSocketSecurityLevelNegotiatedSSL
forKey:NSStreamSocketSecurityLevelKey];
[_outputStream setProperty:NSStreamSocketSecurityLevelNegotiatedSSL
forKey:NSStreamSocketSecurityLevelKey];
我們嘗試像這樣從中讀取數據:
NSUInteger READ_BUFFER_LENGTH = 16 * 1024;
uint8_t readBuffer[READ_BUFFER_LENGTH];
NSInteger readBytesCount = 0;
if([_inputStream hasBytesAvailable]) {
readBytesCount = [_inputStream read:readBuffer
maxLength:READ_BUFFER_LENGTH];
if (readBytesCount > 0) {
NSData *partialData = [NSData dataWithBytes:(const void *)readBuffer
length:readBytesCount];
}
這在99,99%的時間中有效。 但是Xcodes崩潰報告程序使我們有些頭疼:
0 CoreFoundation 0x0000000184970620 CFHash + 360 (CFRuntime.c:1080)
1 CoreFoundation 0x00000001849718b8 CFBasicHashGetCountOfKey + 160 (CFBasicHash.c:455)
2 CoreFoundation 0x00000001849718b8 CFBasicHashGetCountOfKey + 160 (CFBasicHash.c:455)
3 CoreFoundation 0x0000000184971804 CFSetContainsValue + 208 (CFSet.c:405)
4 CoreFoundation 0x00000001849a0148 CFRunLoopRemoveSource + 164 (CFRunLoop.c:3542)
5 CFNetwork 0x0000000185113e78 SocketStream::read(__CFReadStream*, unsigned char*, long, CFStreamError*, unsigned char*) + 604 (SocketStream.cpp:2757)
6 CoreFoundation 0x000000018499c7c8 CFReadStreamRead + 480 (CFStream.c:1146)
崩潰發生在[NSData dataWithBytes:length:]
。 您有什么主意,如何引發,調試或修復此錯誤?
嘗試使用SocketIO
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