Socket server (swift 3)

Question

Created Sep ’18

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Hi all,

I'm working on a swift 3.1 (XCode 8.2/El Capitan) application that will "listen" on a port for incomming socket client connections.

Where could I find some docs that describe the API and how to use it? I know how to do it in C or Java, if it helps.

Thank you in advance.

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Answer 1

DTS Engineer OP

Apple

Sep ’18

The best option for doing this on shipping systems is

NetService

. If you pass in the

.listenForConnections

option when you publish the service, it will listen for connections and call the

netService(_:didAcceptConnectionWith:outputStream:)

delegate method for each one. You can then either:

Use these
```
InputStream
```
and
```
OutputStream
```
instances for your networking
Or, if you have existing BSD Sockets-based networking code, extract the sockets from these streams (using
```
CFStreamPropertyKey.socketNativeHandle
```
) and pass that down to you code

On iOS 12 and later you should look in to the Network framework.

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