[tools] add envoy grpc-web proxy

Author: the729

tools/envoy/Dockerfile

@@ -0,0 +1,3 @@
+FROM envoyproxy/envoy-alpine:v1.13.0
+COPY tools/envoy/envoy.yaml /etc/envoy/envoy.yaml
+

tools/envoy/envoy.yaml

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+admin:
+  access_log_path: /tmp/admin_access.log
+  address:
+    socket_address: { address: 0.0.0.0, port_value: 9901 }
+
+static_resources:
+  listeners:
+    - name: listener_0
+      address:
+        socket_address: { address: 0.0.0.0, port_value: 8080 }
+      filter_chains:
+        - filters:
+            - name: envoy.http_connection_manager
+              typed_config:
+                "@type": type.googleapis.com/envoy.config.filter.network.http_connection_manager.v2.HttpConnectionManager
+                codec_type: auto
+                stat_prefix: ingress_http
+                route_config:
+                  name: local_route
+                  virtual_hosts:
+                    - name: local_service
+                      domains: ['*']
+                      routes:
+                        - match: { prefix: '/' }
+                          route:
+                            cluster: echo_service
+                            max_grpc_timeout: 5s
+                      cors:
+                        allow_origin_string_match: 
+                          - exact: '*'
+                        allow_methods: GET, PUT, DELETE, POST, OPTIONS
+                        allow_headers: keep-alive,user-agent,cache-control,content-type,content-transfer-encoding,custom-header-1,x-accept-content-transfer-encoding,x-accept-response-streaming,x-user-agent,x-grpc-web,grpc-timeout
+                        max_age: '1728000'
+                        expose_headers: custom-header-1,grpc-status,grpc-message
+
+                http_filters:
+                  - name: envoy.grpc_web
+                  - name: envoy.cors
+                  - name: envoy.router
+  clusters:
+    - name: echo_service
+      connect_timeout: 5s
+      type: logical_dns
+      http2_protocol_options: {}
+      lb_policy: round_robin
+      load_assignment:
+        cluster_name: echo_service
+        endpoints:
+          - lb_endpoints:
+            - endpoint:
+                address:
+                  socket_address: { address: ac.testnet.libra.org, port_value: 8000 }