Fix spdy proxy (#962)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/main/lens-proxy.ts

@@ -44,9 +44,7 @@ export class LensProxy {
     const spdyProxy = spdy.createServer({
       spdy: {
         plain: true,
-        connection: {
-          autoSpdy31: true
-        }
+        protocols: ["http/1.1", "spdy/3.1"]
       }
     }, (req: http.IncomingMessage, res: http.ServerResponse) => {
       this.handleRequest(proxy, req, res)
@@ -73,12 +71,40 @@ export class LensProxy {
     if (cluster) {
       const proxyUrl = await cluster.contextHandler.resolveAuthProxyUrl() + req.url.replace(apiKubePrefix, "")
       const apiUrl = url.parse(cluster.apiUrl)
-      const res = new http.ServerResponse(req)
-      res.assignSocket(socket)
-      res.setHeader("Location", proxyUrl)
-      res.setHeader("Host", apiUrl.hostname)
-      res.statusCode = 302
-      res.end()
+      const pUrl = url.parse(proxyUrl)
+      const connectOpts = { port: parseInt(pUrl.port), host: pUrl.hostname }
+      const proxySocket = new net.Socket()
+      proxySocket.connect(connectOpts, () => {
+        proxySocket.write(`${req.method} ${pUrl.path} HTTP/1.1\r\n`)
+        proxySocket.write(`Host: ${apiUrl.host}\r\n`)
+        for (let i = 0; i < req.rawHeaders.length; i += 2) {
+          const key = req.rawHeaders[i]
+          if (key !== "Host" && key !== "Authorization") {
+            proxySocket.write(`${req.rawHeaders[i]}: ${req.rawHeaders[i+1]}\r\n`)
+          }
+        }
+        proxySocket.write("\r\n")
+        proxySocket.write(head)
+      })
+      proxySocket.on('data', function (chunk) {
+        socket.write(chunk)
+      })
+      proxySocket.on('end', function () {
+        socket.end()
+      })
+      proxySocket.on('error', function (err) {
+        socket.write("HTTP/" + req.httpVersion + " 500 Connection error\r\n\r\n");
+        socket.end()
+      })
+      socket.on('data', function (chunk) {
+        proxySocket.write(chunk)
+      })
+      socket.on('end', function () {
+        proxySocket.end()
+      })
+      socket.on('error', function () {
+        proxySocket.end()
+      })
     }
   }