talk/examples/call/discoitemsquerytask.cc

/*
 * libjingle
 * Copyright 2004--2005, Google Inc.
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#include "talk/examples/call/discoitemsquerytask.h"
#include "talk/base/scoped_ptr.h"
#include "talk/xmpp/constants.h"


namespace buzz {

namespace {
const int kDiscoItemsTimeout = 60;
} // namespace

DiscoItemsQueryTask::DiscoItemsQueryTask(XmppTaskParentInterface* parent,
                                         const std::string& node,
                                         const Jid& to)
    : XmppTask(parent, XmppEngine::HL_SINGLE), node_(node) {
  set_timeout_seconds(kDiscoItemsTimeout);
  to_ = to;
}

int DiscoItemsQueryTask::ProcessStart() {
  talk_base::scoped_ptr<XmlElement> get(MakeIq(STR_GET, to_, task_id()));

  XmlElement* element = new XmlElement(QN_DISCO_ITEMS_QUERY, true);
  element->AddAttr(QN_NODE, node_);

  get->AddElement(element);

  if (SendStanza(get.get()) != XMPP_RETURN_OK) {
    SignalDiscoItemsError(to_, NULL);
    return STATE_ERROR;
  }

  return STATE_RESPONSE;
}

int DiscoItemsQueryTask::ProcessResponse() {
  const XmlElement* stanza = NextStanza();
  if (stanza == NULL)
    return STATE_BLOCKED;

  bool success = false;
  if (stanza->Attr(QN_TYPE) != STR_ERROR) {
    const XmlElement* query = stanza->FirstNamed(QN_DISCO_ITEMS_QUERY);
    if (query) {
      SignalGotDiscoItems(to_, query);
      success = true;
    }
  }

  if (!success) {
    SignalDiscoItemsError(to_, stanza->FirstNamed(QN_ERROR));
  }

  return STATE_DONE;
}

int DiscoItemsQueryTask::OnTimeout() {
  SignalDiscoItemsError(to_, NULL);
  return XmppTask::OnTimeout();
}

bool DiscoItemsQueryTask::HandleStanza(const XmlElement* stanza) {
  if (!MatchResponseIq(stanza, to_, task_id()))
    return false;
  QueueStanza(stanza);
  return true;

}

}