<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Just to be accurate, BlueSocket also provides non-blocking I/O as well…</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures" class="">///</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures" class="">/// Set blocking mode for socket.</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures" class="">///</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures" class="">/// - Parameter shouldBlock: True to block, false to not.</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(0, 132, 0);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures" class="">///</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span></span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">public</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">func</span><span style="font-variant-ligatures: no-common-ligatures" class=""> setBlocking(mode shouldBlock: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Bool</span><span style="font-variant-ligatures: no-common-ligatures" class="">) </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">throws</span></div></div><div class=""><br class=""></div><div class="">The default setting is to block. However, you can use this API to change that...</div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">-Bill Abt</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class=""></div><br class="Apple-interchange-newline"></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Mar 28, 2017, at 6:22 AM, Michael Chiu via swift-server-dev <<a href="mailto:swift-server-dev@swift.org" class="">swift-server-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Just a random thought. How about an eventfd or kqueue EVFILT_USER event that simulates the behavior of a socket? Such that the TLS side can trigger the event and write the data size through evenfd or kevent.udata. The implementation can be done by protocol abstraction that socket and TLSService confirms to:<br class=""><br class="">protocol Pollable {<br class="">var ident: Int32 { get }<br class="">}<br class=""><br class="">protocol Readable {<br class="">func read(…) <br class="">}<br class=""><br class="">Michael<br class=""><br class=""><br class=""><blockquote type="cite" class="">On Mar 28, 2017, at 3:09 AM, Helge Heß via swift-server-dev <<a href="mailto:swift-server-dev@swift.org" class="">swift-server-dev@swift.org</a>> wrote:<br class=""><br class="">On 28. Mar 2017, at 12:03, Johannes Weiß <<a href="mailto:johannesweiss@apple.com" class="">johannesweiss@apple.com</a>> wrote:<br class=""><blockquote type="cite" class="">Hi Helge and Gelareh,<br class=""><br class=""><blockquote type="cite" class="">[...]<br class=""><blockquote type="cite" class="">If you are talking about non-blocking by any chance, we have an implementation of this in BlueSSLService (<a href="https://github.com/IBM-Swift/BlueSSLService" class="">https://github.com/IBM-Swift/BlueSSLService</a>) which interfaces with a socket management layer (BlueSocket - <a href="https://github.com/IBM-Swift/BlueSocket" class="">https://github.com/IBM-Swift/BlueSocket</a>).<br class=""></blockquote><br class="">Sounds good. Do you have an example demonstrating the use of BlueSocket in NIO mode? Like a simple client which just opens a socket connection to a TLS server and reads with NIO configured.<br class=""></blockquote><br class="">as far as I understand the source code BlueSocket is blocking IO only. But its API basically breaks the abstraction by giving you (publically!) direct access to the the file descriptor.<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>public internal(set) var socketfd: Int32 = SOCKET_INVALID_DESCRIPTOR<br class=""><br class="">(from: <a href="https://github.com/IBM-Swift/BlueSocket/blob/master/Sources/Socket.swift#L772" class="">https://github.com/IBM-Swift/BlueSocket/blob/master/Sources/Socket.swift#L772</a> )<br class=""><br class="">so what you could do is<br class=""><br class="">fcntl(someBlueSocket.socketFD, O_NONBLOCK, 1)<br class=""><br class="">and then put in in a kqueue/epoll/DispatchSource . I personally don't think that counts as non-blocking API but it's possible :)<br class=""></blockquote><br class="">I think that this would actually be fine for a low level object.<br class=""><br class="">But I’d like to see this working in the real world :-) The key part being that the TLS layer needs to buffer already read data until the TLS frames are complete. I know that this is possible with OpenSSL, and it was said that it should be possible with the low level macOS stuff, but I’d like to see this actually working. No offence, lets just make sure we don’t miss something in here as this is IMO very important.<br class=""><br class="">hh<br class=""><br class="">_______________________________________________<br class="">swift-server-dev mailing list<br class=""><a href="mailto:swift-server-dev@swift.org" class="">swift-server-dev@swift.org</a><br class="">https://lists.swift.org/mailman/listinfo/swift-server-dev<br class=""></blockquote><br class="">_______________________________________________<br class="">swift-server-dev mailing list<br class=""><a href="mailto:swift-server-dev@swift.org" class="">swift-server-dev@swift.org</a><br class="">https://lists.swift.org/mailman/listinfo/swift-server-dev<br class=""></div></div></blockquote></div><br class=""></body></html>