net::ERR_INVALID_HTTP_RESPONSE

all request shows net::ERR_INVALID_HTTP_RESPONSE

i try to use demo by this https://github.com/grpc/grpc-web/tree/master/net/grpc/gateway/examples/helloworld
i want too simple so i didnt use docker and envoy; i make the client.js to request 8080 port and the server.js listen 8080 port. just modify this

// client
var client = new GreeterClient('http://127.0.0.1:8080',
                               null, null);
//server
  server.bind('0.0.0.0:8080', grpc.ServerCredentials.createInsecure());

when i open it in chrome it shows : i add log in server method

function doSayHello(call, callback) {
  console.log('hello');
  callback(null, {message: 'Hello! '+ call.request.name});
}

but the hello not show
i think the server didnt get the request.

browser version

chrome 76.0.3809.100

thanks!

[orchie]

@stanley-cheung

You cannot not use Envoy for gRPC-Web at the moment. gRPC-Web browser client cannot communicate directly with a gRPC backend.

I did exactly that earlier today but without TLS. And it was through a Docker instance on Win10 connected to a .net core grpc service.

It would make sense to get nginx working again with the latest release. Perhaps the original author could weigh-in and outline the integration issues.

my server only run on nginx proxy,and its can not work. so I can not use grpc-web. 😦

[orchie]

#503 #534 I find nginx enable to use gprc on version 1.13,and I used 1.15 I try everything to config the nginx ,then the result is #503

2019/08/31 18:11:15 [error] 21756#26044: 
*2 upstream rejected request with error 2 while reading response header from upstream, 
client: 127.0.0.1, 
server: grpct.cn, 
request: "POST /helloworld.Greeter/SayHello HTTP/2.0", 
upstream: "grpc://127.0.0.1:50051", 
host: "grpct.cn", 
referrer: "https://grpct.cn/"