Convert UInt8?, String, Int to String type using Swift

Question

I am using the SwiftSocket library and I am trying to convert the data the UDP socket receives from type 'UInt8?, String, Int' to type String.

    let data = client.recv(1024)
    let string = NSData.withBytes(data)
    let str = NSString(data: string, encoding: NSUTF8StringEncoding) as String?

When I attempt this I get the following error:

Cannot convert value of type '((UInt8]?,String,Int)' (aka'(Optional>, String, Int)') to be expected argument type '[UInt8'

If I print out 'data', i receive the following:

(Optional([104, 101, 108, 108, 111]), "127.0.0.1", 34835)

Where 104,101,108,108,111 is the string "hello".

Is there way to convert the data read to string?

in the link you posted, the answer says: var endMarker = NSData(bytes: [0xFF, 0xD9] as [UInt8], length: 2). What are FF and D9? Can you show me an example? — bshah
– bshah, Commented Nov 19, 2015 at 0:19
in the code I gave above, I would have expected the variable str to be 'hello' — bshah
– bshah, Commented Nov 19, 2015 at 0:31

t4nhpt · Accepted Answer · 2015-11-19 04:23:43Z

0

Your approach is right, but you forgot to get the data from the received object. It's data.0.

    let receivedData:([UInt8], String, Int) = ([104, 101, 108, 108, 111], "", 0)
    let data = NSData(bytes: receivedData.0, length: receivedData.0.count)
    let str = NSString(data: data, encoding: NSUTF8StringEncoding) as! String

    print(str)

answered Nov 19, 2015 at 4:23

t4nhpt

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