Edit Question - KnowledgeHub

Title Body

I'm trying to upload large files (at least 500MB, preferably up to a few GB) using the WebSocket API. The problem is that I can't figure out how to write "send this slice of the file, release the resources used then repeat". I was hoping I could avoid using something like Flash/Silverlight for this. Currently, I'm working with something along the lines of: function FileSlicer(file) { // randomly picked 1MB slices, // I don't think this size is important for this experiment this.sliceSize = 1024*1024; this.slices = Math.ceil(file.size / this.sliceSize); this.currentSlice = 0; this.getNextSlice = function() { var start = this.currentSlice * this.sliceSize; var end = Math.min((this.currentSlice+1) * this.sliceSize, file.size); ++this.currentSlice; return file.slice(start, end); } } Then, I would upload using: function Uploader(url, file) { var fs = new FileSlicer(file); var socket = new WebSocket(url); socket.onopen = function() { for(var i = 0; i < fs.slices; ++i) { socket.send(fs.getNextSlice()); // see below } } } Basically this returns immediately, bufferedAmount is unchanged (0) and it keeps iterating and adding all the slices to the queue before attempting to send it; there's no socket.afterSend to allow me to queue it properly, which is where I'm stuck.

Tags (comma-separated) Cancel