| /** @file |
| |
| SessionAccept |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); 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 "I_Net.h" |
| #include "I_VConnection.h" |
| #include "I_NetVConnection.h" |
| |
| struct AclRecord; |
| struct HttpProxyPort; |
| /** |
| The base class SessionAccept can not be used directly. The inherited class of |
| SessionAccept (ex. HttpSessionAccept) is designed to: |
| |
| - Check IPAllow policy. |
| - Create ClientSession. |
| - Pass NetVC and MIOBuffer by call ClientSession::new_connection(). |
| |
| nullptr mutex: |
| |
| - One specific protocol has ONLY one inherited class of SessionAccept. |
| - The object of this class is shared by all incoming request / NetVC that |
| identified as the protocol by ProtocolSessionProbe. |
| - The inherited class of SessionAccept is non-blocking to allow parallel accepts/ |
| |
| To implement a inherited class of SessionAccept: |
| |
| - No state is recorded by the handler. |
| - Values are required to be set during construction and never changed. |
| - Can not put into EventSystem. |
| |
| So a nullptr mutex is safe for the continuation. |
| */ |
| |
| class SessionAccept : public Continuation |
| { |
| public: |
| SessionAccept(ProxyMutex *amutex) : Continuation(amutex) { SET_HANDLER(&SessionAccept::mainEvent); } |
| ~SessionAccept() override {} |
| /** |
| Accept a new connection on this session. |
| |
| If the session accepts the connection by returning true, it |
| takes ownership of all the arguments. |
| |
| If the session rejects the connection by returning false, the |
| arguments are unmodified and the caller retains ownership. |
| Typically in this case, the caller would simply destroy all the |
| arguments. |
| |
| */ |
| virtual bool accept(NetVConnection *, MIOBuffer *, IOBufferReader *) = 0; |
| /// The proxy port on which this session arrived. |
| HttpProxyPort *proxyPort = nullptr; |
| |
| private: |
| virtual int mainEvent(int event, void *netvc) = 0; |
| }; |