121 lines
3.0 KiB
C++
121 lines
3.0 KiB
C++
//
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// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
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// SPDX-License-Identifier: MIT
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//
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#pragma once
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#include <common/include/NetworkSockets.hpp>
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#include <common/include/Packet.hpp>
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#include <common/include/SocketConnectionException.hpp>
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#include <string>
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#include <atomic>
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namespace arm
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{
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namespace pipe
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{
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enum class TargetEndianness
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{
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BeWire,
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LeWire
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};
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enum class PacketDirection
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{
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Sending,
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ReceivedHeader,
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ReceivedData
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};
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class ConnectionHandler;
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class BasePipeServer
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{
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public:
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BasePipeServer(arm::pipe::Socket clientConnection, bool echoPackets)
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: m_ClientConnection(clientConnection)
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, m_EchoPackets(echoPackets)
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{}
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~BasePipeServer()
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{
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// We have set SOCK_CLOEXEC on this socket but we'll close it to be good citizens.
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arm::pipe::Close(m_ClientConnection);
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}
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BasePipeServer(const BasePipeServer&) = delete;
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BasePipeServer& operator=(const BasePipeServer&) = delete;
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BasePipeServer(BasePipeServer&&) = delete;
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BasePipeServer& operator=(BasePipeServer&&) = delete;
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/// Close the client connection
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/// @return 0 if successful
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int Close()
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{
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return arm::pipe::Close(m_ClientConnection);
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}
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/// Send a packet to the client
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/// @return true if a valid packet has been sent.
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bool SendPacket(uint32_t packetFamily, uint32_t packetId, const uint8_t* data, uint32_t dataLength);
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/// Set the client socket to nonblocking
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/// @return true if successful.
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bool SetNonBlocking()
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{
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return arm::pipe::SetNonBlocking(m_ClientConnection);
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}
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/// Block on the client connection until a complete packet has been received.
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/// @return true if a valid packet has been received.
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arm::pipe::Packet WaitForPacket(uint32_t timeoutMs);
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/// Once the connection is open wait to receive the stream meta data packet from the client. Reading this
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/// packet differs from others as we need to determine endianness.
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/// @return true only if a valid stream meta data packet has been received.
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bool WaitForStreamMetaData();
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uint32_t GetStreamMetadataVersion()
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{
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return m_StreamMetaDataVersion;
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}
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uint32_t GetStreamMetadataMaxDataLen()
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{
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return m_StreamMetaDataMaxDataLen;
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}
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uint32_t GetStreamMetadataPid()
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{
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return m_StreamMetaDataPid;
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}
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private:
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void EchoPacket(PacketDirection direction, uint8_t* packet, size_t lengthInBytes);
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bool ReadFromSocket(uint8_t* packetData, uint32_t expectedLength);
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bool ReadHeader(uint32_t headerAsWords[2]);
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arm::pipe::Packet ReceivePacket();
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uint32_t ToUint32(uint8_t* data, TargetEndianness endianness);
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void InsertU32(uint32_t value, uint8_t* data, TargetEndianness endianness);
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arm::pipe::Socket m_ClientConnection;
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bool m_EchoPackets;
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TargetEndianness m_Endianness;
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uint32_t m_StreamMetaDataVersion;
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uint32_t m_StreamMetaDataMaxDataLen;
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uint32_t m_StreamMetaDataPid;
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};
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} // namespace pipe
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} // namespace arm
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