Method FindSDPChannel

common/src/platform/BluetoothHelper.Linux.cpp:60–147

}

int BluetoothHelper::FindSDPChannel(const std::string &deviceAddr, uint8_t *uuid) {
  bdaddr_t address;
  if(str2ba(deviceAddr.c_str(), &address) != 0) {
    spdlog::error("Invalid Bluetooth address format: {}", deviceAddr);
    return -1;
  }

  bdaddr_t bdAny = {{0, 0, 0, 0, 0, 0}};
  sdp_session_t *session = sdp_connect(&bdAny, &address, SDP_RETRY_IF_BUSY);
  if(!session) {
    spdlog::error("sdp_connect() failed. (Code={})", errno);
    return -1;
  }

  uuid_t uuid128;
  sdp_uuid128_create(&uuid128, uuid);
  uint32_t range = 0x0000ffff;
  sdp_list_t *responseList = nullptr;
  sdp_list_t *searchList = sdp_list_append(nullptr, &uuid128);
  sdp_list_t *attrIdList = sdp_list_append(nullptr, &range);

  int success = sdp_service_search_attr_req(session, searchList, SDP_ATTR_REQ_RANGE, attrIdList, &responseList);
  sdp_list_free(searchList, nullptr);
  sdp_list_free(attrIdList, nullptr);
  if(success != 0) {
    spdlog::error("sdp_service_search_attr_req() failed. (Code={})", errno);
    sdp_close(session);
    return -1;
  }

  success = sdp_list_len(responseList);
  if(success <= 0) {
    spdlog::error("sdp_list_len() failed. (Code={})", success);
    sdp_close(session);
    return -1;
  }

  int channel = 0;
  sdp_list_t *responses = responseList;
  while(responses) {
    auto record = (sdp_record_t *)responses->data;
    sdp_list_t *protoList = nullptr;
    success = sdp_get_access_protos(record, &protoList);
    if(success != 0) {
      spdlog::error("sdp_get_access_protos() failed. (Code={})", success);
      sdp_close(session);
      sdp_list_free(responseList, nullptr);
      return -1;
    }

    sdp_list_t *protocol = protoList;
    while(protocol) {
      auto pds = (sdp_list_t *)protocol->data;
      int protocolCount = 0;
      while(pds) {
        auto d = (sdp_data_t *)pds->data;
        while(d) {
          switch(d->dtd) {