Implement experimental websocket client

CMakeLists.txt

@@ -777,6 +777,7 @@ add_library (seastar
   src/util/read_first_line.cc
   src/util/tmp_file.cc
   src/util/short_streams.cc
+  src/websocket/common.cc
   src/websocket/server.cc
   )
 

include/seastar/http/client.hh

@@ -25,6 +25,7 @@
 #include <boost/intrusive/list.hpp>
 #endif
 #include <seastar/net/api.hh>
+#include <seastar/http/connection_factory.hh>
 #include <seastar/http/reply.hh>
 #include <seastar/core/condition-variable.hh>
 #include <seastar/core/iostream.hh>
@@ -136,26 +137,6 @@ private:
     void shutdown() noexcept;
 };
 
-/**
- * \brief Factory that provides transport for \ref client
- *
- * This customization point allows callers provide its own transport for client. The
- * client code calls factory when it needs more connections to the server and maintains
- * the pool of re-usable sockets internally
- */
-
-class connection_factory {
-public:
-    /**
-     * \brief Make a \ref connected_socket
-     *
-     * The implementations of this method should return ready-to-use socket that will
-     * be used by \ref client as transport for its http connections
-     */
-    virtual future<connected_socket> make(abort_source*) = 0;
-    virtual ~connection_factory() {}
-};
-
 /**
  * \brief Class client wraps communications using HTTP protocol
  *

include/seastar/http/connection_factory.hh

@@ -0,0 +1,74 @@
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership.  You may not use this file except in compliance with the License.
+ *
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#pragma once
+
+#include <seastar/core/seastar.hh>
+#include <seastar/net/api.hh>
+#include <seastar/net/tls.hh>
+
+namespace seastar::http::experimental {
+
+/**
+ * \brief Factory that provides transport for \ref client
+ *
+ * This customization point allows callers provide its own transport for client. The
+ * client code calls factory when it needs more connections to the server.
+ */
+
+class connection_factory {
+public:
+    /**
+     * \brief Make a \ref connected_socket
+     *
+     * The implementations of this method should return ready-to-use socket that will
+     * be used by \ref client as transport for its http connections
+     */
+    virtual future<connected_socket> make(abort_source*) = 0;
+    virtual ~connection_factory() {}
+};
+
+class basic_connection_factory : public connection_factory {
+    socket_address _addr;
+public:
+    explicit basic_connection_factory(socket_address addr)
+        : _addr(std::move(addr))
+    {
+    }
+    virtual future<connected_socket> make(abort_source* as) override {
+        return seastar::connect(_addr, {}, transport::TCP);
+    }
+};
+
+class tls_connection_factory : public connection_factory {
+    socket_address _addr;
+    shared_ptr<tls::certificate_credentials> _creds;
+    sstring _host;
+public:
+    tls_connection_factory(socket_address addr, shared_ptr<tls::certificate_credentials> creds, sstring host)
+        : _addr(std::move(addr))
+        , _creds(std::move(creds))
+        , _host(std::move(host))
+    {
+    }
+    virtual future<connected_socket> make(abort_source* as) override {
+        return tls::connect(_creds, _addr, tls::tls_options{.server_name = _host});
+    }
+};
+
+}