[英]Socket Programming: Java Client - Ruby Server
I'm trying to socket connection between a Ruby Server and a Java Client. 我正在尝试在Ruby服务器和Java客户端之间建立套接字连接。 The connection is setup with success but I'm finding difficulties when sending a message from server to client.
连接已成功建立,但在从服务器向客户端发送消息时遇到困难。
This is how my Ruby Server looks like: 这是我的Ruby Server的样子:
class ServerSocket
loop do
server = TCPServer.new(ip, port).accept
while server
line = server.recv(65000)
puts "Message: #{line}"
server.flush
server.puts("Hi from server!")
server.flush
end
end
end
When I try with this Java Client: 当我尝试使用此Java客户端时:
Socket socket = new Socket(InetAddress.getByName(ip), port);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
out.write("Hello from client!");
socket.close();
the connection is established and the message is sent with success from client to server. 建立连接,并成功将消息从客户端发送到服务器。 But when the server reaches this line:
但是,当服务器到达此行时:
server.puts("Hi from server!")
it throws this exception: 它将引发此异常:
lib/server_socket.rb:11:in `write': Broken pipe (Errno::EPIPE)
from lib/server_socket.rb:11:in `puts'
from lib/server_socket.rb:11:in `block in <class:ServerSocket>'
from lib/server_socket.rb:2:in `loop'
from lib/server_socket.rb:2:in `<class:ServerSocket>'
from lib/server_socket.rb:1:in `<top (required)>'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/railties-5.1.4/lib/rails/commands/runner/runner_command.rb:34:in `load'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/railties-5.1.4/lib/rails/commands/runner/runner_command.rb:34:in `perform'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/railties-5.1.4/lib/rails/command/base.rb:63:in `perform'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/railties-5.1.4/lib/rails/command.rb:44:in `invoke'
from /home/dionis/.rvm/gems/ruby-2.4.1@sample/gems/railties-5.1.4/lib/rails/commands.rb:16:in `<top (required)>'
from bin/rails:9:in `require'
from bin/rails:9:in `<main>'
Another user experience is when I try with this Java Client: 当我尝试使用此Java客户端时,另一个用户体验是:
Socket socket = new Socket(InetAddress.getByName(ip), port);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
out.write("Hello from client!");
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String serverMsg = in.readLine();
System.out.println("Server: " + serverMsg);
socket.close();
Here, I'm trying to get the message from the server. 在这里,我正在尝试从服务器获取消息。 But when the client reaches this line:
但是当客户到达这一行时:
String serverMsg = in.readLine();
it just hangs there forever. 它永远挂在那里。
Does anyone know how to deal with this? 有人知道如何处理吗?
EDIT (full client code) 编辑 (完整的客户端代码)
ClientSocket.java ClientSocket.java
public class ClientSocket implements Runnable{
@Override
public void run() {
System.out.println("Connecting...");
try {
Socket socket = new Socket(InetAddress.getByName(ip), port);
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
out.write("Hello from client!");
socket.close();
System.out.println("Closing...");
} catch (Exception e) {
e.printStackTrace();
}
}
}
Main.java Main.java
public class Main{
public static void main(String[] args) {
Thread cThread = new Thread(new ClientSocket());
cThread.start();
}
}
@Dionis I am not familiar with java. @Dionis我对Java不熟悉。 Have written a java client and ruby server I guess this will help you.
已经编写了Java客户端和ruby服务器,我想这将对您有所帮助。
Ruby TCP server code: Ruby TCP服务器代码:
require 'socket'
server = TCPServer.new(12345).accept
line = server.recv(50)
puts "Message from java Client: #{line}"
server.flush
server.puts("Hi from server!")
server.flush
Java TCP Client code: Java TCP客户端代码:
import java.net.*;
import java.io.*;
class Main{
public static void main(String[] args) throws Exception {
Socket socket = new Socket("localhost", 12345);
DataInputStream is = new DataInputStream(socket.getInputStream());
DataOutputStream os = new DataOutputStream(socket.getOutputStream());
os.writeBytes("Hello \n");
String line = is.readLine();
System.out.println("Msg from ruby Server :" + line);
socket.close();
}
}
Let me know if resolve the issue Thanks! 让我知道是否解决了问题,谢谢!
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