如何在iPhone上的TCP连接上禁用Nagle算法 [英] how to disable Nagle algorithm on TCP connection on iPhone

问题描述

我正在构建套接字，使用

I'm building a socket , using

CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault,
                                       (CFStringRef) yourHostAsNSString,
                                       yourPortAsInteger,
                                       &myReadStream,
                                       &myWriteStream);

我看到当我用myWriteStream发送消息时，它会将几条消息连接在一起，然后发送它们。
我认为这是因为Nagle算法，我想禁用它。
有没有人知道怎么做？

and I see that when I send a messages with "myWriteStream" it concatenate few message together and then send them. I think it happens because of the Nagle algorithm and I want to disable it. Does any one knows how to do it?

推荐答案

不保证这会解决您的问题，但如果您想要要禁用Nagle算法，您需要从流中获取本机套接字并调用 setsockopt 。

No guarantee this will fix your problem, but if you want to disable the Nagle algorithm, you need to get the native socket from the stream and call setsockopt.

CFDataRef nativeSocket = CFWriteStreamCopyProperty(myWriteStream, kCFStreamPropertySocketNativeHandle);
CFSocketNativeHandle *sock = (CFSocketNativeHandle *)CFDataGetBytePtr(nativeSocket);
setsockopt(*sock, IPPROTO_TCP, TCP_NODELAY, &(int){ 1 }, sizeof(int));
CFRelease(nativeSocket);

（对于复合文字技巧。）

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