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这是我第一次制作网络服务器。我想创建一个代理服务器。目前,我将服务器设置为“www.google.com”,而不是对HTTP请求进行任何解析。代理服务器没有得到服务器的响应
我在命令行上运行ProxyServer,然后在另一个命令行窗口中使用“telnet server_name 5000”调用服务器,然后调用“GET/HTTP/1.1”。
一切工作,直到处理服务器响应的while循环。没有打印出来。为什么?
所有帮助表示赞赏。
import java.net.*;
import java.io.*;
public class ProxyServer {
public static void main(String[] args) throws IOException {
int proxyServerPortNumber = 5000;
String hostName = "www.google.com";
int portNumber = 80;
try {
// SERVER
// Open socket connection and bind it to proxyServerPortNumber
ServerSocket serverSocket =
new ServerSocket(proxyServerPortNumber);
// Listen and accept request
Socket clientSocket = serverSocket.accept();
System.out.println("client request accepted");
// send to client socket
PrintWriter sendToClient =
new PrintWriter(clientSocket.getOutputStream(), true);
// get from client socket
BufferedReader getFromClient = new BufferedReader(
new InputStreamReader(clientSocket.getInputStream()));
// CLIENT
// open socket connection
Socket echoSocket = new Socket(hostName, portNumber);
// send to server
PrintWriter out =
new PrintWriter(echoSocket.getOutputStream(), true);
// get from server
BufferedReader in =
new BufferedReader(
new InputStreamReader(echoSocket.getInputStream()));
String clientRequest;
// clientRequest = "GET/HTTP/1.1\r\n\r\n";
while ((clientRequest = getFromClient.readLine()) != null) {
System.out.println("in while loop");
System.out.println(clientRequest);
out.println(clientRequest); // send to server
System.out.println("sent to server");
//Get response from server
String response;
while ((response = in.readLine()) != null) // no response why?
{
sendToClient.println("echo: " + response);
System.out.println("echo:" + response);
}
} // end while loop
} catch (IOException e) {
System.out.println("Exception caught when trying to listen on port "
+ portNumber + " or listening for a connection");
System.out.println(e.getMessage());
}
}
}
哦,我意识到我的描述与我的代码不一致。让我再试一次。 – user234159
好的我修复了请求,服务器仍然没有返回 – user234159
也许你应该看看你的客户端代码是否可以在不使用代理服务器的情况下连接。 – fdsa