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Why is My Java Server Not Responding to My Client's Requests?

Mary-Kate Olsen
Mary-Kate OlsenOriginal
2024-11-09 04:15:01901browse

Why is My Java Server Not Responding to My Client's Requests?

Java Socket Protocol Issue: Server Fails to Respond to Client

In the provided code snippets, you encounter an issue where the server fails to respond to the client's requests. To resolve this, you must understand the intricacies of the Java socket protocol.

Problem:

The given code attempts to establish a client-server communication where the client sends a message to the server. However, upon receiving the message, the server neither prints nor responds to it.

Solution:

The key to resolving this issue lies in ensuring that messages sent over the socket stream adhere to the protocol's formatting guidelines. In this case, for the server to correctly process the message, it expects a carriage return (r) followed by a line feed (n) at the end of each message.

Implementation:

To rectify the issue, modify the client code as follows:

string = "end";
out.write(string + "\r\n");  // Add "\r\n" to the string
out.flush();

Similarly, for the server to send a proper response, make the following change:

out.write("to end" + "\r\n");  // Add "\r\n" to the string
out.flush();
out.close();

By incorporating these adjustments, both the client and server messages will conform to the protocol's formatting requirements, enabling the server to successfully receive, process, and respond to the client's requests.

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