Move virtually all the toy server logic out of quic_server_bin.cc and into a new
QuicToyServer class which can be used in chromium.

gfe-relnote: n/a - Tools only.
PiperOrigin-RevId: 248801380
Change-Id: I5586c13ae6f481564b08140e9c5365d447ac0be1

quic/tools/quic_toy_server.h

diff --git a/quic/tools/quic_toy_server.h b/quic/tools/quic_toy_server.h
new file mode 100644
index 0000000..6c5c486
--- /dev/null
+++ b/quic/tools/quic_toy_server.h
@@ -0,0 +1,62 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_TOOLS_QUIC_TOY_SERVER_H_
+#define QUICHE_QUIC_TOOLS_QUIC_TOY_SERVER_H_
+
+#include "net/third_party/quiche/src/quic/core/crypto/proof_source.h"
+#include "net/third_party/quiche/src/quic/tools/quic_simple_server_backend.h"
+#include "net/third_party/quiche/src/quic/tools/quic_spdy_server_base.h"
+
+namespace quic {
+
+// A binary wrapper for QuicServer.  It listens forever on --port
+// (default 6121) until it's killed or ctrl-cd to death.
+class QuicToyServer {
+ public:
+  // A factory for creating QuicSpdyServerBase instances.
+  class ServerFactory {
+   public:
+    virtual ~ServerFactory() = default;
+
+    // Creates a QuicSpdyServerBase instance using |backend| for generating
+    // responses, and |proof_source| for certificates.
+    virtual std::unique_ptr<QuicSpdyServerBase> CreateServer(
+        QuicSimpleServerBackend* backend,
+        std::unique_ptr<ProofSource> proof_source) = 0;
+  };
+
+  // A facotry for creating QuicSimpleServerBackend instances.
+  class BackendFactory {
+   public:
+    virtual ~BackendFactory() = default;
+
+    // Creates a new backend.
+    virtual std::unique_ptr<QuicSimpleServerBackend> CreateBackend() = 0;
+  };
+
+  // A factory for creating QuicMemoryCacheBackend instances, configured
+  // to load files from disk, if necessary.
+  class MemoryCacheBackendFactory : public BackendFactory {
+   public:
+    std::unique_ptr<quic::QuicSimpleServerBackend> CreateBackend() override;
+  };
+
+  // Constructs a new toy server that will use |server_factory| to create the
+  // actual QuicSpdyServerBase instance.
+  QuicToyServer(BackendFactory* backend_factory, ServerFactory* server_factory);
+
+  // Connects to the QUIC server based on the various flags defined in the
+  // .cc file, listends for requests and sends the responses. Returns 1 on
+  // failure and does not return otherwise.
+  int Start();
+
+ private:
+  BackendFactory* backend_factory_;  // Unowned.
+  ServerFactory* server_factory_;    // Unowned.
+};
+
+}  // namespace quic
+
+#endif  // QUICHE_QUIC_TOOLS_QUIC_TOY_SERVER_H_