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134 lines
3.1 KiB
134 lines
3.1 KiB
/**
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* \file
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*
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* \author Georg Hopp
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*
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* \copyright
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* Copyright © 2014 Georg Hopp
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include "trbase.h"
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#include "trio.h"
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#include "trdata.h"
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#include "tr/datagram_service.h"
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#include "tr/interface/protocol.h"
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#include "tr/interface/comm_end_point.h"
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static
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int
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datagramServiceCtor(void * _this, va_list * params)
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{
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TR_PARENTCALL(TR_DatagramService, _this, TR_Class, ctor, params);
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return 0;
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}
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static
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void
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datagramServiceDtor(void * _this)
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{
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TR_PARENTCALL(TR_DatagramService, _this, TR_Class, dtor);
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}
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static
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TR_ProtoMessage
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datagramServiceNextMessage(void * _this)
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{
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TR_CommEndPoint comm = _this;
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TR_RemoteData data = TR_queueGet(comm->read_buffer);
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TR_ProtoMessage ret_message = NULL;
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size_t end;
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if (NULL == data) return ret_message;
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ret_message = TR_protoCreateMessage(comm->protocol, data->remote);
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end = TR_protoParse(comm->protocol, ret_message, data);
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if (end != ((TR_SizedData)data)->size) {
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/**
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* TODO
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* This means that the parser has not consumed all of the data.
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* We do not know the reason, but with HTTP this should only occur
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* when the message is complete... anyway, to prevent us from
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* looping forever because a protocol implementation is buggy
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* we should close the connection after end was 0 the second time.
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* This can be done by firing a close event.
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*/
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switch(end) {
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default:
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{
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TR_RemoteData new_data = TR_new(
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TR_RemoteData,
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((TR_SizedData)data)->data + end,
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((TR_SizedData)data)->size - end,
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data->remote);
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TR_delete(data);
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data = new_data;
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}
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// intended drop through
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case 0:
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TR_queuePutFirst(comm->read_buffer, data);
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}
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}
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if (! ret_message->ready) {
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TR_delete(ret_message);
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}
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return ret_message;
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}
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static
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int
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datagramServiceCompose(void * _this, TR_ProtoMessage message)
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{
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TR_RemoteData data =
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TR_protoCompose(((TR_CommEndPoint)_this)->protocol, message);
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if (! data) {
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return FALSE;
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}
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TR_queuePut(((TR_CommEndPoint)_this)->write_buffer, data);
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return TRUE;
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}
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intptr_t datagramService_events[TR_CEP_EVENT_MAX + 1];
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TR_INIT_IFACE(TR_Class, datagramServiceCtor, datagramServiceDtor, NULL);
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TR_INIT_IFACE(
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TR_CommEndPoint,
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datagramServiceNextMessage,
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datagramServiceCompose);
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TR_CREATE_CLASS(
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TR_DatagramService,
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TR_CommEndPoint,
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NULL,
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TR_IF(TR_Class),
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TR_IF(TR_CommEndPoint)) = {
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{{
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TR_CEP_EVENT_MAX + 1,
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datagramService_events
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}}
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};
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// vim: set ts=4 sw=4:
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