有没有办法通过使用CFStreamCreatePairWithSocketToHost（）来获取套接字引用？ [英] Is there a way to get the socket reference by using CFStreamCreatePairWithSocketToHost()?

问题描述

我正在使用 CFStreamCreatePairWithSocketToHost 创建套接字tcp连接以获取写入流（我不想准备任何数据）：

I am creating a socket tcp connection using CFStreamCreatePairWithSocketToHost like this to get a write stream (I dont want to ready any data):

CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)host, port, NULL, &writeStream);

这很有效，但由于 nagle算法我的tcp命令被缓冲。这可能很酷，但在我的情况下，我需要尽快发送命令，没有任何延迟。

This works pretty well but because of the nagle's algorithm my tcp commands are buffered. This may be cool but in my case I need to send the command as fast as possible without any delays.

我发现了一种使用以下代码禁用此功能的方法这里：

I found a way to disable this "feature" using the following code found here:

int yes = 1;
setsockopt(CFSocketGetNative(aSocket), IPPROTO_TCP, TCP_NODELAY, (void *)&yes, sizeof(yes));

但是我无法弄清楚如何获得对套接字的有效引用。你能帮助我吗？

but I cant figure out how to get a valid reference to my socket. Can you help me?

推荐答案

CFDataRef socketData = CFWriteStreamCopyProperty(writeStream, kCFStreamPropertySocketNativeHandle);
CFSocketNativeHandle handle;
CFDataGetBytes(socketData, CFRangeMake(0, sizeof(CFSocketNativeHandle)), &handle);
// handle now contains the same thing as CFSocketGetNative(aSocket)

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