client-server

I have a java server that communicates with a java client via json-rpc. The client is supposed to report internal stats to the server which modifies the servers behaviour. Both client and server compenents are written in house so I can control what the client does and how it reports stats but is there a way I can verify that the client code hasn't been modified? If it has it will still service the client but using some default behaviours. The clients will be publicly available so it's not a big deal for someone to decompile them and alter behaviours. Simply having the client send a signature

Alright so I've been looking into this for the past two days and I still feel like I'm getting nowhere. I recently started using the SPIFFS File System for Arduino development on an HUZZAH ESP8266 like the FSBrowser.ino example, and while it's been great in terms of separating code, as my code continues to grow it has not been great in terms of stability. Ever since I began adding more and more javascript, I began to have errors pop up for various files, whether it's my HTML/CSS/JS, and the primary error I see is ERR_CONTENT_LENGTH_MISMATCH . //File Read for File System bool handleFileRead

I'm doing client/server interaction with sockets in C. What I'm trying to do is have the client request a file to be read on the server, the server return a buffer of the file contents, and the client print out the file. Though I was able to accomplish the server sending a buffer of a file to the client & the client printing it out successfully, I can't seem to get the server to successfully read a filename sent by the client. Here is what I mean: ///This is the structure of the message that gets sent back and forth struct message { int code; //Just indicates 1 or 2 for readfile or writefile

I have a client class and a server class. If client sends message to server, server will send response back to the client, then client will print all the messages it received. For example, If Client sends "A" to Server, then Server will send response to client "1111". So I use readLine() in client class to read the message from server, then client print "1111" in the console. If Client sends "B" to Server, then Server will send response to client "2222\n 3333". So the expected printing output from client is: "2222" "3333" So the response message from server to client may have 1 line or 2 lines