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330 lines (310 loc) · 8.47 KB
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package tcp.client;
/******************************************************************
* Simple TCP Client, supports socket connection with timeout,
* direct send message, send message and get server message back.
*
* Created by Jason/Ge Wu
* On Jul/21/2017
*******************************************************************/
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.net.Socket;
import java.net.SocketException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NetworkInterface;
import java.net.SocketTimeoutException;
public class TCP_Client
{
private Boolean status;
private String result;
protected Integer timeout;
protected Integer conn_timeout;
protected final String server;
protected final Integer port;
public TCP_Client(String server, Integer port)
{
this.server = server;
this.port = port;
}
public TCP_Client(String server, Integer port, Integer timeout)
{
this.server = server;
this.port = port;
this.timeout = timeout;
}
public TCP_Client(String server, Integer port, Integer timeout, Integer connection_timeout)
{
this.server = server;
this.port = port;
this.timeout = timeout;
conn_timeout = connection_timeout;
}
private String timestamp()
{
LocalDateTime now = LocalDateTime.now();
DateTimeFormatter current_ts = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
String ts = now.format(current_ts);
return ts;
}
public void setTimeout(Integer timeout)
{
if(timeout > 1000) // millisecond as unit
this.timeout = timeout;
}
public void setConnect_Timeout(Integer connection_timeout)
{
if(timeout > 1000) // millisecond as unit
conn_timeout = connection_timeout;
}
public boolean getStatus()
{
return status;
}
public String getResult()
{
return result;
}
public static String getMAC()
{
try
{
InetAddress localhost = InetAddress.getLocalHost();
NetworkInterface network = NetworkInterface.getByInetAddress(localhost);
// String name = localhost.getHostName();
// System.out.println(name);
byte[] macArray = network.getHardwareAddress();
StringBuilder str = new StringBuilder();
for (int i = 0; i < macArray.length; i++)
{
str.append(String.format("%02X%s", macArray[i], (i < macArray.length - 1) ? "-" : ""));
}
String macAddress=str.toString();
return macAddress;
}
catch(Exception err)
{
err.printStackTrace(); //print Exception StackTrace
return null;
}
}
/*********** Send a Message Without Receiving ***********/
public boolean Send(String message)
{
boolean flag = false;
try
{
Socket client = new Socket();
if(timeout != null && conn_timeout == null)
{
client.connect(new InetSocketAddress(server, port), timeout);
client.setSoTimeout(timeout);
}
else if(timeout != null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
client.setSoTimeout(timeout);
}
else if(timeout == null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
}
else
{
client.connect(new InetSocketAddress(server, port), 0); //Timeout 0 means using OS default
}
// Write Data to the socket
OutputStreamWriter msg_out = new OutputStreamWriter(client.getOutputStream());
BufferedWriter buffer_out = new BufferedWriter(msg_out);
buffer_out.write(message);
buffer_out.flush();
// buffer_out.close();
flag = true;
if(client != null)
{
client.close();
}
result = "Success";
status = flag;
System.out.println(timestamp()+" TCP Send: "+result);
return flag;
}
catch(SocketTimeoutException e)
{
System.out.print(timestamp()+ " : ");
System.err.println("Socket Timedout for [ " + timeout + " ] Second(s).");
result = e.toString();
status = flag;
return flag;
}
catch(SocketException e)
{
System.out.print(timestamp()+ " : ");
System.err.println(e);
result = e.toString();
status = flag;
return flag;
}
catch(IOException e)
{
// e.printStackTrace();
System.out.print(timestamp()+ " : ");
System.err.println(e);
result = e.toString();
status = flag;
return flag;
}
}
/******** Send a Message and Get Server Response ********/
public String Send_(String message)
{
String receive = null;
status = false;
result = "Fail";
try
{
Socket client = new Socket();
if(timeout != null && conn_timeout == null)
{
client.connect(new InetSocketAddress(server, port), timeout);
client.setSoTimeout(timeout);
}
else if(timeout != null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
client.setSoTimeout(timeout);
}
else if(timeout == null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
}
else
{
client.connect(new InetSocketAddress(server, port), 0); //Timeout 0 means using OS default
}
//Write Data to the socket
OutputStreamWriter msg_out = new OutputStreamWriter(client.getOutputStream());
BufferedWriter buffer_out = new BufferedWriter(msg_out);
buffer_out.write(message);
buffer_out.flush();
client.shutdownOutput();
//Read Data from the socket
BufferedReader buffer_in = new BufferedReader(new InputStreamReader(client.getInputStream()));
String temp = null;
StringBuilder recv = new StringBuilder();
while((temp = buffer_in.readLine()) != null)
{
recv.append(temp);
}
buffer_in.close();
buffer_out.close();
receive = recv.toString();
result = "Success";
status = true;
System.out.println(timestamp() +" TCP Send: "+result);
if(client != null)
{
client.close();
}
return receive;
}
catch(SocketTimeoutException err)
{
System.out.print(timestamp()+ " : ");
System.err.println("Socket Timedout for [ " + timeout + " ] Second(s).");
result = err.toString();
return receive;
}
catch(SocketException err)
{
System.out.print(timestamp() + " : ");
System.err.println(err);
result = err.toString();
System.out.println(status);
return receive;
}
catch(IOException err)
{
// err.printStackTrace();
System.out.print(timestamp() + " : ");
result = err.toString();
return receive;
}
}
/********** Send Multiple Messages (developing) **********/
public boolean Send_Multiple(ArrayList<String> messages)
{
boolean flag = false;
try
{
Socket client = new Socket();
if(timeout != null && conn_timeout == null)
{
client.connect(new InetSocketAddress(server, port), timeout);
client.setSoTimeout(timeout);
}
else if(timeout != null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
client.setSoTimeout(timeout);
}
else if(timeout == null && conn_timeout != null)
{
client.connect(new InetSocketAddress(server, port), conn_timeout);
}
else
{
client.connect(new InetSocketAddress(server, port), 0); //Timeout 0 means using OS default
}
// Write Data to the socket
OutputStreamWriter msg_out = new OutputStreamWriter(client.getOutputStream());
BufferedWriter buffer_out = new BufferedWriter(msg_out);
for(String msg : messages)
{
buffer_out.write(msg+"\n");
buffer_out.flush();
}
// buffer_out.close();
flag = true;
if(client != null)
{
client.close();
}
result = "Success";
status = flag;
System.out.println(timestamp()+" TCP Send: "+result);
return flag;
}
catch(SocketTimeoutException e)
{
System.out.print(timestamp()+ " : ");
System.err.println("Socket Timedout for [ " + timeout + " ] Second(s).");
result = e.toString();
status = flag;
return flag;
}
catch(SocketException e)
{
System.out.print(timestamp()+ " : ");
System.err.println(e);
result = e.toString();
status = flag;
return flag;
}
catch(IOException e)
{
// e.printStackTrace();
System.out.print(timestamp()+ " : ");
System.err.println(e);
result = e.toString();
status = flag;
return flag;
}
}
}