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98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_TTCN3_DRB_INTERFACE_H
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#define SRSUE_TTCN3_DRB_INTERFACE_H
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/common.h"
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#include "srslte/mac/pdu.h"
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#include "ttcn3_interfaces.h"
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#include "ttcn3_port_handler.h"
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#include <srslte/interfaces/ue_interfaces.h>
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using namespace srslte;
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// The DRB interface
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class ttcn3_drb_interface : public ttcn3_port_handler
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{
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public:
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ttcn3_drb_interface() : pool(byte_buffer_pool::get_instance()) {}
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~ttcn3_drb_interface() = default;
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int init(ss_srb_interface* syssim_, srslte::log* log_, std::string net_ip_, uint32_t net_port_)
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{
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syssim = syssim_;
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log = log_;
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net_ip = net_ip_;
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net_port = net_port_;
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initialized = true;
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log->debug("Initialized.\n");
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return port_listen();
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}
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void tx(unique_byte_buffer_t pdu)
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{
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if (initialized) {
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log->info_hex(pdu->msg, pdu->N_bytes, "Sending %d B to Titan\n", pdu->N_bytes);
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send(pdu->msg, pdu->N_bytes);
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} else {
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log->error("Trying to transmit but port not connected.\n");
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}
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}
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private:
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///< Main message handler
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int handle_message(const unique_byte_array_t& rx_buf, const uint32_t n)
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{
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log->debug_hex(rx_buf->begin(), n, "Received %d B from remote.\n", n);
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// Chop incoming msg, first two bytes are length of the JSON
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// (see IPL4_EUTRA_SYSTEM_Definitions.ttcn
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uint16_t json_len = ((uint16_t)rx_buf->at(0) << 8) | rx_buf->at(1);
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// The data part after the JSON starts right here but handling
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// is done in the respective functions
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uint16_t rx_buf_offset = json_len + 2;
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Document document;
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if (document.Parse((char*)&rx_buf->at(2)).HasParseError() || document.IsObject() == false) {
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log->error_hex((uint8*)&rx_buf->at(2), json_len, "Error parsing incoming data.\n");
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return SRSLTE_ERROR;
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}
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// Pretty-print
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StringBuffer buffer;
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PrettyWriter<StringBuffer> writer(buffer);
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document.Accept(writer);
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log->info("Received JSON with %d B\n%s\n", json_len, (char*)buffer.GetString());
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// TODO: call handler
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return SRSLTE_SUCCESS;
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}
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ss_srb_interface* syssim = nullptr;
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byte_buffer_pool* pool = nullptr;
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};
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#endif // SRSUE_TTCN3_DRB_INTERFACE_H
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