问题描述
使用socket.io和socket.io/stream从服务器到客户端按FIFO顺序流式传输多个文件。
对于第一个文件,它工作正常,但对于第二个文件,接收到的问题socket
为空。
服务器代码
io.on("connection",(socket) => {
console.log("New Client Connected");
let fileName1 = "";
socket.on("download",(fileName) => {
fileName1 = fileName;
startStream(socket)(fileName1);
});
socket.on("disconnect",() => {
console.log("Client disconnected");
});
});
const startStream = socket => fileName => {
const file = `${__dirname}/public/${fileName}`;
var stream = ss.createStream();
ss(socket).emit("filedownload",stream,123);
var myFileStream = fs.createReadStream(file);
myFileStream.pipe(stream);
}
客户代码
function downloadFileByStreaming(socket,fileName) {
ss(socket).on('filedownload',function(stream,data) {
console.log("File Download ");
var binaryData = [];
stream.on("data",function(data) {
console.log("Inside data ",data);
for(var i=0;i<data.length;i++) {
binaryData.push(data[i]);
}
});
stream.on("end",function(data) {
downloadBinary(binaryData,fileName)
binaryData = [];
});
});
function downloadBinary(binaryData,fileName) {
let array = new Uint8Array(binaryData.length);
for (var i = 0; i < binaryData.length; i++){
array[i] = binaryData[i];
}
var a = document.createElement("a");
document.body.appendChild(a);
a.style = "display: none";
var b = new Blob([array.buffer],{type: 'application/octet-stream'});
const url = window.URL.createObjectURL(b);
a.href = url;
a.download = fileName;
a.click();
window.URL.revokeObjectURL(url);
onComplete();
}
将React用于客户端,将Node用于服务器。
解决方法
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