Add libnice-based ICE-UDP implementation as plugin
This commit is contained in:
Marvin W
parent
f328bf93fb
commit
d703b7c09d
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@ -10,6 +10,9 @@ find_packages(ICE_PACKAGES REQUIRED
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vala_precompile(ICE_VALA_C
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SOURCES
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src/plugin.vala
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src/module.vala
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src/transport_parameters.vala
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src/util.vala
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src/register_plugin.vala
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CUSTOM_VAPIS
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${CMAKE_BINARY_DIR}/exports/xmpp-vala.vapi
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@ -21,7 +24,7 @@ OPTIONS
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--vapidir=${CMAKE_CURRENT_SOURCE_DIR}/vapi
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)
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add_definitions(${VALA_CFLAGS})
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add_definitions(${VALA_CFLAGS} -DG_LOG_DOMAIN="ice")
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add_library(ice SHARED ${ICE_VALA_C})
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target_link_libraries(ice libdino ${ICE_PACKAGES})
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set_target_properties(ice PROPERTIES PREFIX "")
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42
plugins/ice/src/module.vala
Normal file
42
plugins/ice/src/module.vala
Normal file
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@ -0,0 +1,42 @@
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using Gee;
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using Xmpp;
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using Xmpp.Xep;
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public class Dino.Plugins.Ice.Module : JingleIceUdp.Module {
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public string? stun_ip = null;
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public uint stun_port = 0;
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public string? turn_ip = null;
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public Xep.ExternalServiceDiscovery.Service? turn_service = null;
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private weak Nice.Agent? agent;
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private Nice.Agent get_agent() {
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Nice.Agent? agent = this.agent;
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if (agent == null) {
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agent = new Nice.Agent(MainContext.@default(), Nice.Compatibility.RFC5245);
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if (stun_ip != null) {
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agent.stun_server = stun_ip;
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agent.stun_server_port = stun_port;
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}
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agent.ice_tcp = false;
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agent.set_software("Dino");
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agent.weak_ref(agent_unweak);
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this.agent = agent;
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debug("STUN server for libnice %s %u", agent.stun_server, agent.stun_server_port);
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}
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return agent;
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}
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public override Jingle.TransportParameters create_transport_parameters(XmppStream stream, uint8 components, Jid local_full_jid, Jid peer_full_jid) {
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return new TransportParameters(get_agent(), turn_service, turn_ip, components, local_full_jid, peer_full_jid);
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}
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public override Jingle.TransportParameters parse_transport_parameters(XmppStream stream, uint8 components, Jid local_full_jid, Jid peer_full_jid, StanzaNode transport) throws Jingle.IqError {
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return new TransportParameters(get_agent(), turn_service, turn_ip, components, local_full_jid, peer_full_jid, transport);
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}
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private void agent_unweak() {
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this.agent = null;
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}
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}
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@ -1,30 +1,71 @@
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using Gee;
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using Nice;
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using Dino.Entities;
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using Xmpp;
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using Xmpp.Xep;
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namespace Dino.Plugins.Ice {
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private extern const size_t NICE_ADDRESS_STRING_LEN;
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public class Plugin : RootInterface, Object {
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public class Dino.Plugins.Ice.Plugin : RootInterface, Object {
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public Dino.Application app;
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public void registered(Dino.Application app) {
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Nice.debug_enable(true);
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this.app = app;
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app.stream_interactor.stream_attached_modules.connect((account, stream) => {
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stream.get_module(Xmpp.Xep.Socks5Bytestreams.Module.IDENTITY).set_local_ip_address_handler(get_local_ip_addresses);
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app.stream_interactor.module_manager.initialize_account_modules.connect((account, list) => {
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list.add(new Module());
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});
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app.stream_interactor.stream_attached_modules.connect((account, stream) => {
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stream.get_module(Socks5Bytestreams.Module.IDENTITY).set_local_ip_address_handler(get_local_ip_addresses);
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});
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app.stream_interactor.stream_negotiated.connect(on_stream_negotiated);
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}
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private Gee.List<string> get_local_ip_addresses() {
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Gee.List<string> result = new ArrayList<string>();
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foreach (string ip_address in Nice.interfaces_get_local_ips(false)) {
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result.add(ip_address);
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private async void on_stream_negotiated(Account account, XmppStream stream) {
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Module? ice_udp_module = stream.get_module(JingleIceUdp.Module.IDENTITY) as Module;
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if (ice_udp_module == null) return;
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Gee.List<Xep.ExternalServiceDiscovery.Service> services = yield ExternalServiceDiscovery.request_services(stream);
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foreach (Xep.ExternalServiceDiscovery.Service service in services) {
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if (service.transport == "udp" && (service.ty == "stun" || service.ty == "turn")) {
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InetAddress ip = yield lookup_ipv4_addess(service.host);
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if (ip == null) continue;
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if (service.ty == "stun") {
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debug("Server offers STUN server: %s:%u, resolved to %s", service.host, service.port, ip.to_string());
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ice_udp_module.stun_ip = ip.to_string();
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ice_udp_module.stun_port = service.port;
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} else if (service.ty == "turn") {
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debug("Server offers TURN server: %s:%u, resolved to %s", service.host, service.port, ip.to_string());
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ice_udp_module.turn_ip = ip.to_string();
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ice_udp_module.turn_service = service;
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}
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}
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}
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if (ice_udp_module.stun_ip == null) {
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InetAddress ip = yield lookup_ipv4_addess("stun.l.google.com");
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if (ip == null) return;
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debug("Using fallback STUN server: stun.l.google.com:19302, resolved to %s", ip.to_string());
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ice_udp_module.stun_ip = ip.to_string();
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ice_udp_module.stun_port = 19302;
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}
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return result;
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}
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public void shutdown() {
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// Nothing to do
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}
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}
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private async InetAddress? lookup_ipv4_addess(string host) {
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try {
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Resolver resolver = Resolver.get_default();
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GLib.List<GLib.InetAddress>? ips = yield resolver.lookup_by_name_async(host);
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foreach (GLib.InetAddress ina in ips) {
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if (ina.get_family() != SocketFamily.IPV4) continue;
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return ina;
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}
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} catch (Error e) {
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warning("Failed looking up IP address of %s", host);
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}
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return null;
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}
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}
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261
plugins/ice/src/transport_parameters.vala
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261
plugins/ice/src/transport_parameters.vala
Normal file
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@ -0,0 +1,261 @@
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using Gee;
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using Xmpp;
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using Xmpp.Xep;
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public class Dino.Plugins.Ice.TransportParameters : JingleIceUdp.IceUdpTransportParameters {
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private Nice.Agent agent;
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private uint stream_id;
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private bool we_want_connection;
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private bool remote_credentials_set;
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private Map<uint8, DatagramConnection> connections = new HashMap<uint8, DatagramConnection>();
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private class DatagramConnection : Jingle.DatagramConnection {
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private Nice.Agent agent;
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private uint stream_id;
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private string? error;
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private ulong sent;
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private ulong sent_reported;
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private ulong recv;
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private ulong recv_reported;
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private ulong datagram_received_id;
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public DatagramConnection(Nice.Agent agent, uint stream_id, uint8 component_id) {
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this.agent = agent;
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this.stream_id = stream_id;
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this.component_id = component_id;
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this.datagram_received_id = this.datagram_received.connect((datagram) => {
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recv += datagram.length;
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if (recv > recv_reported + 100000) {
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debug("Received %lu bytes via stream %u component %u", recv, stream_id, component_id);
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recv_reported = recv;
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}
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});
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}
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public override async void terminate(bool we_terminated, string? reason_string = null, string? reason_text = null) {
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yield base.terminate(we_terminated, reason_string, reason_text);
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this.disconnect(datagram_received_id);
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agent = null;
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}
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public override void send_datagram(Bytes datagram) {
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if (this.agent != null && is_component_ready(agent, stream_id, component_id)) {
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agent.send(stream_id, component_id, datagram.get_data());
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sent += datagram.length;
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if (sent > sent_reported + 100000) {
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debug("Sent %lu bytes via stream %u component %u", sent, stream_id, component_id);
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sent_reported = sent;
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}
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}
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}
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}
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public TransportParameters(Nice.Agent agent, Xep.ExternalServiceDiscovery.Service? turn_service, string? turn_ip, uint8 components, Jid local_full_jid, Jid peer_full_jid, StanzaNode? node = null) {
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base(components, local_full_jid, peer_full_jid, node);
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this.we_want_connection = (node == null);
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this.agent = agent;
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agent.candidate_gathering_done.connect(on_candidate_gathering_done);
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agent.initial_binding_request_received.connect(on_initial_binding_request_received);
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agent.component_state_changed.connect(on_component_state_changed);
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agent.new_selected_pair_full.connect(on_new_selected_pair_full);
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agent.new_candidate_full.connect(on_new_candidate);
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agent.controlling_mode = !incoming;
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stream_id = agent.add_stream(components);
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if (turn_ip != null) {
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for (uint8 component_id = 1; component_id <= components; component_id++) {
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agent.set_relay_info(stream_id, component_id, turn_ip, turn_service.port, turn_service.username, turn_service.password, Nice.RelayType.UDP);
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debug("TURN info (component %i) %s:%u", component_id, turn_ip, turn_service.port);
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}
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}
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string ufrag;
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string pwd;
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agent.get_local_credentials(stream_id, out ufrag, out pwd);
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init(ufrag, pwd);
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for (uint8 component_id = 1; component_id <= components; component_id++) {
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// We don't properly get local candidates before this call
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agent.attach_recv(stream_id, component_id, MainContext.@default(), on_recv);
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}
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agent.gather_candidates(stream_id);
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}
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private void on_candidate_gathering_done(uint stream_id) {
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if (stream_id != this.stream_id) return;
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debug("on_candidate_gathering_done in %u", stream_id);
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for (uint8 i = 1; i <= components; i++) {
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foreach (unowned Nice.Candidate nc in agent.get_local_candidates(stream_id, i)) {
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if (nc.transport == Nice.CandidateTransport.UDP) {
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JingleIceUdp.Candidate? candidate = candidate_to_jingle(nc);
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if (candidate == null) continue;
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debug("Local candidate summary: %s", agent.generate_local_candidate_sdp(nc));
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}
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}
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}
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}
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private void on_new_candidate(Nice.Candidate nc) {
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if (nc.stream_id != stream_id) return;
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JingleIceUdp.Candidate? candidate = candidate_to_jingle(nc);
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if (candidate == null) return;
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if (nc.transport == Nice.CandidateTransport.UDP) {
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// Execution was in the agent thread before
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add_local_candidate_threadsafe(candidate);
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}
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}
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public override void handle_transport_accept(StanzaNode transport) throws Jingle.IqError {
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debug("on_transport_accept from %s", peer_full_jid.to_string());
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base.handle_transport_accept(transport);
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}
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public override void handle_transport_info(StanzaNode transport) throws Jingle.IqError {
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debug("on_transport_info from %s", peer_full_jid.to_string());
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base.handle_transport_info(transport);
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if (!we_want_connection) return;
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if (remote_ufrag != null && remote_pwd != null && !remote_credentials_set) {
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agent.set_remote_credentials(stream_id, remote_ufrag, remote_pwd);
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remote_credentials_set = true;
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}
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for (uint8 i = 1; i <= components; i++) {
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SList<Nice.Candidate> candidates = new SList<Nice.Candidate>();
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foreach (JingleIceUdp.Candidate candidate in remote_candidates) {
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if (candidate.component == i) {
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Nice.Candidate nc = candidate_to_nice(candidate);
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candidates.append(nc);
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}
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}
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int new_candidates = agent.set_remote_candidates(stream_id, i, candidates);
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debug("Updated to %i remote candidates for candidate %u via transport info", new_candidates, i);
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}
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}
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public override void create_transport_connection(XmppStream stream, Jingle.Content content) {
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debug("create_transport_connection: %s", content.session.sid);
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debug("local_credentials: %s %s", local_ufrag, local_pwd);
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debug("remote_credentials: %s %s", remote_ufrag, remote_pwd);
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debug("expected incoming credentials: %s %s", local_ufrag + ":" + remote_ufrag, local_pwd);
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debug("expected outgoing credentials: %s %s", remote_ufrag + ":" + local_ufrag, remote_pwd);
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we_want_connection = true;
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if (remote_ufrag != null && remote_pwd != null && !remote_credentials_set) {
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agent.set_remote_credentials(stream_id, remote_ufrag, remote_pwd);
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remote_credentials_set = true;
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}
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for (uint8 i = 1; i <= components; i++) {
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SList<Nice.Candidate> candidates = new SList<Nice.Candidate>();
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foreach (JingleIceUdp.Candidate candidate in remote_candidates) {
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if (candidate.ip.has_prefix("fe80::")) continue;
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if (candidate.component == i) {
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Nice.Candidate nc = candidate_to_nice(candidate);
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candidates.append(nc);
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debug("remote candidate: %s", agent.generate_local_candidate_sdp(nc));
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}
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}
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int new_candidates = agent.set_remote_candidates(stream_id, i, candidates);
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debug("Initiated component %u with %i remote candidates", i, new_candidates);
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connections[i] = new DatagramConnection(agent, stream_id, i);
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content.set_transport_connection(connections[i], i);
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}
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base.create_transport_connection(stream, content);
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}
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private void on_component_state_changed(uint stream_id, uint component_id, uint state) {
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if (stream_id != this.stream_id) return;
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debug("stream %u component %u state changed to %s", stream_id, component_id, agent.get_component_state(stream_id, component_id).to_string());
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if (is_component_ready(agent, stream_id, component_id) && connections.has_key((uint8) component_id) && !connections[(uint8)component_id].ready) {
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connections[(uint8)component_id].ready = true;
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}
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}
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private void on_initial_binding_request_received(uint stream_id) {
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if (stream_id != this.stream_id) return;
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debug("initial_binding_request_received");
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}
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private void on_new_selected_pair_full(uint stream_id, uint component_id, Nice.Candidate p1, Nice.Candidate p2) {
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if (stream_id != this.stream_id) return;
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debug("new_selected_pair_full %u [%s, %s]", component_id, agent.generate_local_candidate_sdp(p1), agent.generate_local_candidate_sdp(p2));
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}
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private void on_recv(Nice.Agent agent, uint stream_id, uint component_id, uint8[] data) {
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if (stream_id != this.stream_id) return;
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if (is_component_ready(agent, stream_id, component_id) && connections.has_key((uint8) component_id)) {
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connections[(uint8) component_id].datagram_received(new Bytes(data));
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} else {
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debug("on_recv stream %u component %u length %u", stream_id, component_id, data.length);
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}
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}
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private static Nice.Candidate candidate_to_nice(JingleIceUdp.Candidate c) {
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Nice.CandidateType type;
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switch (c.type_) {
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case JingleIceUdp.Candidate.Type.HOST: type = Nice.CandidateType.HOST; break;
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case JingleIceUdp.Candidate.Type.PRFLX: type = Nice.CandidateType.PEER_REFLEXIVE; break;
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case JingleIceUdp.Candidate.Type.RELAY: type = Nice.CandidateType.RELAYED; break;
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case JingleIceUdp.Candidate.Type.SRFLX: type = Nice.CandidateType.SERVER_REFLEXIVE; break;
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default: assert_not_reached();
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}
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Nice.Candidate candidate = new Nice.Candidate(type);
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candidate.component_id = c.component;
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char[] foundation = new char[Nice.CANDIDATE_MAX_FOUNDATION];
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string foundation_str = c.foundation.to_string();
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Memory.copy(foundation, foundation_str.data, foundation_str.length);
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candidate.foundation = foundation;
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candidate.addr = Nice.Address();
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candidate.addr.init();
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candidate.addr.set_from_string(c.ip);
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candidate.addr.set_port(c.port);
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candidate.priority = c.priority;
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if (c.rel_addr != null) {
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candidate.base_addr = Nice.Address();
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candidate.base_addr.init();
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candidate.base_addr.set_from_string(c.rel_addr);
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candidate.base_addr.set_port(c.rel_port);
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}
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candidate.transport = Nice.CandidateTransport.UDP;
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return candidate;
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}
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private static JingleIceUdp.Candidate? candidate_to_jingle(Nice.Candidate nc) {
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JingleIceUdp.Candidate candidate = new JingleIceUdp.Candidate();
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switch (nc.type) {
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case Nice.CandidateType.HOST: candidate.type_ = JingleIceUdp.Candidate.Type.HOST; break;
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case Nice.CandidateType.PEER_REFLEXIVE: candidate.type_ = JingleIceUdp.Candidate.Type.PRFLX; break;
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case Nice.CandidateType.RELAYED: candidate.type_ = JingleIceUdp.Candidate.Type.RELAY; break;
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case Nice.CandidateType.SERVER_REFLEXIVE: candidate.type_ = JingleIceUdp.Candidate.Type.SRFLX; break;
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default: assert_not_reached();
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}
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candidate.component = (uint8) nc.component_id;
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candidate.foundation = (uint8) int.parse((string)nc.foundation);
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candidate.generation = 0;
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candidate.id = Random.next_int().to_string("%08x"); // TODO
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char[] res = new char[NICE_ADDRESS_STRING_LEN];
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nc.addr.to_string(res);
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candidate.ip = (string) res;
|
||||
candidate.network = 0; // TODO
|
||||
candidate.port = (uint16) nc.addr.get_port();
|
||||
candidate.priority = nc.priority;
|
||||
candidate.protocol = "udp";
|
||||
if (nc.base_addr.is_valid() && !nc.base_addr.equal(nc.addr)) {
|
||||
res = new char[NICE_ADDRESS_STRING_LEN];
|
||||
nc.base_addr.to_string(res);
|
||||
candidate.rel_addr = (string) res;
|
||||
candidate.rel_port = (uint16) nc.base_addr.get_port();
|
||||
}
|
||||
if (candidate.ip.has_prefix("fe80::")) return null;
|
||||
|
||||
return candidate;
|
||||
}
|
||||
}
|
||||
18
plugins/ice/src/util.vala
Normal file
18
plugins/ice/src/util.vala
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
using Gee;
|
||||
|
||||
namespace Dino.Plugins.Ice {
|
||||
|
||||
internal static bool is_component_ready(Nice.Agent agent, uint stream_id, uint component_id) {
|
||||
var state = agent.get_component_state(stream_id, component_id);
|
||||
return state == Nice.ComponentState.CONNECTED || state == Nice.ComponentState.READY;
|
||||
}
|
||||
|
||||
internal Gee.List<string> get_local_ip_addresses() {
|
||||
Gee.List<string> result = new ArrayList<string>();
|
||||
foreach (string ip_address in Nice.interfaces_get_local_ips(false)) {
|
||||
result.add(ip_address);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,4 +1,8 @@
|
|||
Nice cheader_filename="nice.h"
|
||||
Address.to_string.dst type="char[]"
|
||||
Agent.new_reliable#constructor name="create_reliable"
|
||||
Agent.attach_recv skip=false
|
||||
Agent.send.buf type="uint8[]" array_length_idx=2
|
||||
AgentRecvFunc.buf type="uint8[]" array_length_idx=3
|
||||
PseudoTcpCallbacks#record skip
|
||||
PseudoTcpSocket#class skip
|
||||
|
|
|
|||
|
|
@ -8,6 +8,7 @@ namespace Nice {
|
|||
public Agent (GLib.MainContext ctx, Nice.Compatibility compat);
|
||||
public bool add_local_address (Nice.Address addr);
|
||||
public uint add_stream (uint n_components);
|
||||
public bool attach_recv (uint stream_id, uint component_id, GLib.MainContext ctx, Nice.AgentRecvFunc func);
|
||||
[Version (since = "0.1.16")]
|
||||
public async void close_async ();
|
||||
[CCode (cname = "nice_agent_new_reliable", has_construct_function = false)]
|
||||
|
|
@ -58,7 +59,7 @@ namespace Nice {
|
|||
public bool restart ();
|
||||
[Version (since = "0.1.6")]
|
||||
public bool restart_stream (uint stream_id);
|
||||
public int send (uint stream_id, uint component_id, uint len, string buf);
|
||||
public int send (uint stream_id, uint component_id, [CCode (array_length_cname = "len", array_length_pos = 2.5, array_length_type = "guint", type = "const gchar*")] uint8[] buf);
|
||||
[Version (since = "0.1.5")]
|
||||
public int send_messages_nonblocking (uint stream_id, uint component_id, [CCode (array_length_cname = "n_messages", array_length_pos = 3.5, array_length_type = "guint")] Nice.OutputMessage[] messages, GLib.Cancellable? cancellable = null) throws GLib.Error;
|
||||
public bool set_local_credentials (uint stream_id, string ufrag, string pwd);
|
||||
|
|
@ -209,7 +210,7 @@ namespace Nice {
|
|||
public void set_ipv4 (uint32 addr_ipv4);
|
||||
public void set_ipv6 (uint8 addr_ipv6);
|
||||
public void set_port (uint port);
|
||||
public void to_string (string dst);
|
||||
public void to_string ([CCode (array_length = false, type = "gchar*")] char[] dst);
|
||||
}
|
||||
[CCode (cheader_filename = "nice.h", has_type_id = false)]
|
||||
[Version (since = "0.1.5")]
|
||||
|
|
@ -343,8 +344,8 @@ namespace Nice {
|
|||
TCP,
|
||||
TLS
|
||||
}
|
||||
[CCode (cheader_filename = "nice.h", instance_pos = 5.9)]
|
||||
public delegate void AgentRecvFunc (Nice.Agent agent, uint stream_id, uint component_id, uint len, string buf);
|
||||
[CCode (cheader_filename = "nice.h", instance_pos = 4.9)]
|
||||
public delegate void AgentRecvFunc (Nice.Agent agent, uint stream_id, uint component_id, [CCode (array_length_cname = "len", array_length_pos = 3.5, array_length_type = "guint", type = "gchar*")] uint8[] buf);
|
||||
[CCode (cheader_filename = "nice.h", cname = "NICE_AGENT_MAX_REMOTE_CANDIDATES")]
|
||||
public const int AGENT_MAX_REMOTE_CANDIDATES;
|
||||
[CCode (cheader_filename = "nice.h", cname = "NICE_CANDIDATE_DIRECTION_MS_PREF_ACTIVE")]
|
||||
|
|
|
|||
Loading…
Reference in a new issue