Fix chunked http bug

lib/http-proxy/passes/web-incoming.js

@@ -169,7 +169,26 @@ module.exports = {
         }
       }
 
-      if (!res.finished) {
+      var isChunked = proxyRes.headers["transfer-encoding"] === "chunked";
+
+      if (isChunked) {
+        // UNIT BUG: https://github.com/nginx/unit/issues/1088
+        let data = [];
+
+        // Collect all chunks
+        proxyRes.on("data", function (chunk) {
+          data.push(chunk);
+        });
+
+        // When the response ends, concatenate and send the response
+        proxyRes.on("end", function () {
+          const buffer = Buffer.concat(data);
+          res.setHeader("Content-Length", buffer.length);
+          res.removeHeader("transfer-encoding");
+          res.end(buffer);
+          if (server) server.emit("end", req, res, proxyRes);
+        });
+      } else if (!res.finished) {
         // Allow us to listen when the proxy has completed
         proxyRes.on('end', function () {
           if (server) server.emit('end', req, res, proxyRes);