It will be split when it hits a network device with a lower MTU than the packet’s size. Most ethernet devices are 1500, but it can often be smaller, like 1492 if that ethernet is going over PPPoE (DSL) because of the extra routing information, even lower if a second layer is added like Windows … Read more
Assume your socket is named s… you need to set socket.SO_REUSEADDR on the server’s socket before binding to an interface… this will allow you to immediately restart a TCP server… s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind((ADDR, PORT))
java.io.IOException: Connection reset by peer The other side has abruptly aborted the connection in midst of a transaction. That can have many causes which are not controllable from the server side on. E.g. the enduser decided to shutdown the client or change the server abruptly while still interacting with your server, or the client program … Read more
What you are looking for can’t be done with in Javascript due to security constraints such as Distributed Denial of Service (DDOS) attacks. The closest technology available (that I know of) for client-side JS is WebRTC. With WebRTC you can use DataChannels over SRTP and ICE as a possible solution. See Also: How to send … Read more
Like I said, I fail to see how using smart pointers is “cheating, and cheating big”. I also do not think your assessment that “they do this for brevity” holds water. Here’s a slightly redacted excerpt¹ from our code base that exemplifies how using shared_ptrs doesn’t preclude tracking connections. It shows just the server side … Read more
Your client will be dispatched in different threads, so they will not intersect. You just need to add something like “DispatchMethod” where your messages will be processed. using System.Text.RegularExpressions; … if (Regex.IsMatch(bufferincmessage, Properties.Settings.Default.REQLogin, RegexOptions.IgnoreCase)) { … } else if (Regex.IsMatch(bufferincmessage, /*some of your command1*/, RegexOptions.IgnoreCase)) { … } else if (Regex.IsMatch(bufferincmessage, /*some of your command1*/, … Read more
Your new work router has probably got UPnP disabled, hence your null reference. Without this your server cannot be made visible to inbound traffic as the router doesn’t know where to send the inbound packets. In this case the router acts as a firewall blocking the incoming traffic to your server. The basic ways around … Read more
Do both os and is need to be flushed and closed for the underlying socket to be reusable? Closing the input stream is sufficient. You can’t flush an input stream, and flushing an output stream before close is redundant. Will connection.disconnect() close the underlying socket (and hence make it unreusable)? It ‘acts as a hint’ … Read more
When accessing Streams, you usually read and write data in small chunks (e.g. a kilobyte or so), or use a method like CopyTo that does that for you. This is an example using CopyTo to copy the contents of a stream to another stream and return it as a byte[] from a method, using an … Read more
You need the following to portably send struct’s over the network: Pack the structure. For gcc and compatible compilers, do this with __attribute__((packed)). Do not use any members other than unsigned integers of fixed size, other packed structures satisfying these requirements, or arrays of any of the former. Signed integers are OK too, unless your … Read more