Easy timeout for a CFWriteStreamWrite/CFReadStreamWriter?

Working on CFStreamCreatePairWithSocketToHost is always convenient:

CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault,
        (CFStringRef) hostnameOrIp,
        aPort,
        &readStream,
        &writeStream);

as it gets you the goods (a r and w pipe) right away. Unfortunately CFReadStreamRead and CFWriteStreamRead block. Is there a clean way to set timeout on this (e.g. with a streamOption)开发者_如何学Go ? They are running in a thread - and as there are quite a few going on in parallel - would like to avoid runloop/signals - as any other pending read/writes should not be interrupted).

Thanks,

Dw.

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You can use CFReadStreamHasBytesAvailable to check if something is available. If yes, CFReadStreamRead will not block. Or you can set client (CFReadStreamSetClient) and listen for notifications (kCFStreamEventHasBytesAvailable in your case).