test config haproxy for gRPC loadbalancing

haproxy.conf

global
  tune.ssl.default-dh-param 1024
 
defaults
  timeout connect 10000ms
  timeout client 60000ms
  timeout server 60000ms
 
frontend fe_http
  mode http
  bind *:8000
  # Redirect to https
  redirect scheme https code 301
 
frontend fe_https
  mode tcp
  bind *:8443 npn spdy/2 alpn h2,http/1.1
  default_backend be_grpc

# gRPC servers running on port 8083-8084
backend be_grpc
  mode tcp
  balance roundrobin
  server srv01 127.0.0.1:8083
  server srv02 127.0.0.1:8084