how can write and read async with socket (councurent) ?

[techlan...@gmail.com]

hi every one
I'm using akka 2.5.x how can call Socket async for read and write ?(what is the best solution)
i need many connection concurrency for send email this is sample code java ?

public boolean sendEmail(String data, String from, String to,String subject)
        throws IOException {
        Socket socket;
        InputStream inn;
        OutputStream outt;
        BufferedReader msg;
        socket = new Socket(mailHost, SMTP_PORT);
        if (socket == null) {
        return false;
        }
        inn = socket.getInputStream();
        outt = socket.getOutputStream();
        in = new BufferedReader(new InputStreamReader(inn));
        out = new PrintWriter(new OutputStreamWriter(outt), true);
        if (inn == null || outt == null) {
        log("Failed to open streams to socket.");
        return false;
        }
        String initialID = in.readLine();
        out.println("HELO " + localhost.getHostName());
        String welcome = in.readLine();
        out.println("MAIL From:<" + from + ">");
        String senderOK = in.readLine();
        out.println("RCPT TO:<" + to + ">");
        String recipientOK = in.readLine();
        out.println("DATA");
        out.println("From:Ehsan test<"+from+">");
        out.println("To:Ehsan uni<"+to+">");
        out.println("Cc:khodam <"+to+">");
        out.println("Subject:"+subject);
        Date d=new Date();
        out.println("Date:"+d.toString());
        // this body of email 
        out.println(data);
        out.println(".");
        // end of email 
        String acceptedOK = in.readLine();
        out.println("QUIT");
        return true;
        }
    }
how can implement with akka ?
how can write and read async ?
could help me for this solution

[techlan...@gmail.com]

i can use TcpIO or Stream which better ? for above solution  

[tech land]

can any help me to choose ?

On Mon, Sep 4, 2017 at 9:46 AM, <techlan...@gmail.com> wrote:

i can use TcpIO or Stream which better ? for above solution  

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[techlan...@gmail.com]

Someone who can help me ???

[Akka Team]

The Akka IO API is actor based and a bit more low level, requiring more boilerplate, the streams one is a higher level API which fits some problems (and mindsets) very well. Performance will likely not differ much so try both and use the one you find easiest to understand and achieve what you want with.

--

Johan

Akka Team

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[tech land]

And question this ?

how i can write 'socket.write' asynchronously

I must use the Future:

for example :

  Fututr{ socket.write(ByteString(date.toString("yy/MM/dd")) ++ EOL)} And get callback ? 

Or not It is not necessary and itself asynchronusly?

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[Johan Andrén]

You can see samples of the two APIs in the docs here:

Actor based API:

http://doc.akka.io/docs/akka/current/scala/io-tcp.html

Stream based API:

http://doc.akka.io/docs/akka/current/scala/stream/stream-io.html

If you are looking for info how to use the Java NIO APIs that is better sought after elsewhere.

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Akka Team

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