124 lines
2.9 KiB
C++
124 lines
2.9 KiB
C++
//
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// Copyright (c) 2011 Alex Yatskov
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#include "metacall.hpp"
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#include "mc_stream.hpp"
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namespace metacall {
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//
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// Constants
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//
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enum {
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SOCKET_BUFFER_SIZE = 1024
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};
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//
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// Stream
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//
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Stream::Stream(Socket* socket) :
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m_socket(socket)
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{
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}
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Stream::State Stream::advance() {
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if (!m_socket->connected()) {
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return STATE_ERROR_CONNECTION;
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}
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if (m_buffSend.bytes() > 0 && m_socket->wait(Socket::MASK_WRITE, 0)) {
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const int bytesSent = m_socket->send(
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m_buffSend.data(),
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m_buffSend.bytes()
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);
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if (bytesSent <= 0) {
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return STATE_ERROR_CONNECTION;
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}
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m_buffSend.removeFromFront(NULL, bytesSent);
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}
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if (m_socket->wait(Socket::MASK_READ, 0)) {
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byte buffRecv[SOCKET_BUFFER_SIZE];
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const int bytesRecv = m_socket->receive(
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buffRecv,
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sizeof(buffRecv)
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);
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if (bytesRecv <= 0) {
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return STATE_ERROR_CONNECTION;
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}
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m_buffRecv.addToBack(buffRecv, bytesRecv);
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}
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return STATE_READY;
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}
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void Stream::reset() {
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m_buffSend.clear();
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m_buffRecv.clear();
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}
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Stream::State Stream::peek(PacketHeader* header, int* headerSize) {
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if (!m_socket->connected()) {
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return STATE_ERROR_CONNECTION;
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}
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Deserializer deserializer(&m_buffRecv);
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if (!deserializer.read(header)) {
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return STATE_PENDING_PACKET_HEADER;
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}
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if (header->magic != PACKET_CONST_MAGIC) {
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return STATE_ERROR_PROTOCOL;
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}
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*headerSize = deserializer.offset();
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const int packetSize = static_cast<int>(header->size) + *headerSize;
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if (m_buffRecv.bytes() < packetSize) {
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return STATE_PENDING_PACKET_BODY;
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}
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return STATE_READY;
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}
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const Socket* Stream::socket() const {
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return m_socket;
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}
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Socket* Stream::socket() {
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return m_socket;
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}
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}
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