Add gRPC Web support.

.gitignore

@@ -8,7 +8,11 @@ build
 /protoc-gen-swiftgrpc
 third_party/**
 /Echo
+/EchoNIO
 /test.out
 /echo.pid
 /SwiftGRPC.xcodeproj
 Package.resolved
+Examples/EchoWeb/dist
+Examples/EchoWeb/node_modules
+Examples/EchoWeb/package-lock.json

Examples/EchoWeb/Generated/echo_grpc_web_pb.js

@@ -0,0 +1,181 @@
+/**
+ * @fileoverview gRPC-Web generated client stub for echo
+ * @enhanceable
+ * @public
+ */
+
+// GENERATED CODE -- DO NOT EDIT!
+
+
+
+const grpc = {};
+grpc.web = require('grpc-web');
+
+const proto = {};
+proto.echo = require('./echo_pb.js');
+
+/**
+ * @param {string} hostname
+ * @param {?Object} credentials
+ * @param {?Object} options
+ * @constructor
+ * @struct
+ * @final
+ */
+proto.echo.EchoClient =
+    function(hostname, credentials, options) {
+  if (!options) options = {};
+  options['format'] = 'text';
+
+  /**
+   * @private @const {!grpc.web.GrpcWebClientBase} The client
+   */
+  this.client_ = new grpc.web.GrpcWebClientBase(options);
+
+  /**
+   * @private @const {string} The hostname
+   */
+  this.hostname_ = hostname;
+
+  /**
+   * @private @const {?Object} The credentials to be used to connect
+   *    to the server
+   */
+  this.credentials_ = credentials;
+
+  /**
+   * @private @const {?Object} Options for the client
+   */
+  this.options_ = options;
+};
+
+
+/**
+ * @param {string} hostname
+ * @param {?Object} credentials
+ * @param {?Object} options
+ * @constructor
+ * @struct
+ * @final
+ */
+proto.echo.EchoPromiseClient =
+    function(hostname, credentials, options) {
+  if (!options) options = {};
+  options['format'] = 'text';
+
+  /**
+   * @private @const {!proto.echo.EchoClient} The delegate callback based client
+   */
+  this.delegateClient_ = new proto.echo.EchoClient(
+      hostname, credentials, options);
+
+};
+
+
+/**
+ * @const
+ * @type {!grpc.web.AbstractClientBase.MethodInfo<
+ *   !proto.echo.EchoRequest,
+ *   !proto.echo.EchoResponse>}
+ */
+const methodInfo_Echo_Get = new grpc.web.AbstractClientBase.MethodInfo(
+  proto.echo.EchoResponse,
+  /** @param {!proto.echo.EchoRequest} request */
+  function(request) {
+    return request.serializeBinary();
+  },
+  proto.echo.EchoResponse.deserializeBinary
+);
+
+
+/**
+ * @param {!proto.echo.EchoRequest} request The
+ *     request proto
+ * @param {!Object<string, string>} metadata User defined
+ *     call metadata
+ * @param {function(?grpc.web.Error, ?proto.echo.EchoResponse)}
+ *     callback The callback function(error, response)
+ * @return {!grpc.web.ClientReadableStream<!proto.echo.EchoResponse>|undefined}
+ *     The XHR Node Readable Stream
+ */
+proto.echo.EchoClient.prototype.get =
+    function(request, metadata, callback) {
+  return this.client_.rpcCall(this.hostname_ +
+      '/echo.Echo/Get',
+      request,
+      metadata,
+      methodInfo_Echo_Get,
+      callback);
+};
+
+
+/**
+ * @param {!proto.echo.EchoRequest} request The
+ *     request proto
+ * @param {!Object<string, string>} metadata User defined
+ *     call metadata
+ * @return {!Promise<!proto.echo.EchoResponse>}
+ *     The XHR Node Readable Stream
+ */
+proto.echo.EchoPromiseClient.prototype.get =
+    function(request, metadata) {
+  return new Promise((resolve, reject) => {
+    this.delegateClient_.get(
+      request, metadata, (error, response) => {
+        error ? reject(error) : resolve(response);
+      });
+  });
+};
+
+
+/**
+ * @const
+ * @type {!grpc.web.AbstractClientBase.MethodInfo<
+ *   !proto.echo.EchoRequest,
+ *   !proto.echo.EchoResponse>}
+ */
+const methodInfo_Echo_Expand = new grpc.web.AbstractClientBase.MethodInfo(
+  proto.echo.EchoResponse,
+  /** @param {!proto.echo.EchoRequest} request */
+  function(request) {
+    return request.serializeBinary();
+  },
+  proto.echo.EchoResponse.deserializeBinary
+);
+
+
+/**
+ * @param {!proto.echo.EchoRequest} request The request proto
+ * @param {!Object<string, string>} metadata User defined
+ *     call metadata
+ * @return {!grpc.web.ClientReadableStream<!proto.echo.EchoResponse>}
+ *     The XHR Node Readable Stream
+ */
+proto.echo.EchoClient.prototype.expand =
+    function(request, metadata) {
+  return this.client_.serverStreaming(this.hostname_ +
+      '/echo.Echo/Expand',
+      request,
+      metadata,
+      methodInfo_Echo_Expand);
+};
+
+
+/**
+ * @param {!proto.echo.EchoRequest} request The request proto
+ * @param {!Object<string, string>} metadata User defined
+ *     call metadata
+ * @return {!grpc.web.ClientReadableStream<!proto.echo.EchoResponse>}
+ *     The XHR Node Readable Stream
+ */
+proto.echo.EchoPromiseClient.prototype.expand =
+    function(request, metadata) {
+  return this.delegateClient_.client_.serverStreaming(this.delegateClient_.hostname_ +
+      '/echo.Echo/Expand',
+      request,
+      metadata,
+      methodInfo_Echo_Expand);
+};
+
+
+module.exports = proto.echo;