RefPtr<NrIceCtx> NrIceCtx::Create(const std::string& name,
bool offerer,
bool allow_loopback,
bool tcp_enabled,
bool allow_link_local,
bool hide_non_default,
Policy policy) {
RefPtr<NrIceCtx> ctx = new NrIceCtx(name, offerer, policy);
// Initialize the crypto callbacks and logging stuff
if (!initialized) {
NR_reg_init(NR_REG_MODE_LOCAL);
nr_crypto_vtbl = &nr_ice_crypto_nss_vtbl;
initialized = true;
// Set the priorites for candidate type preferences.
// These numbers come from RFC 5245 S. 4.1.2.2
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_SRV_RFLX, 100);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_PEER_RFLX, 110);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_HOST, 126);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_RELAYED, 5);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_SRV_RFLX_TCP, 99);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_PEER_RFLX_TCP, 109);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_HOST_TCP, 125);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_RELAYED_TCP, 0);
int32_t stun_client_maximum_transmits = 7;
int32_t ice_trickle_grace_period = 5000;
int32_t ice_tcp_so_sock_count = 3;
int32_t ice_tcp_listen_backlog = 10;
nsAutoCString force_net_interface;
#ifndef MOZILLA_XPCOMRT_API
nsresult res;
nsCOMPtr<nsIPrefService> prefs =
do_GetService("@mozilla.org/preferences-service;1", &res);
if (NS_SUCCEEDED(res)) {
nsCOMPtr<nsIPrefBranch> branch = do_QueryInterface(prefs);
if (branch) {
branch->GetIntPref(
"media.peerconnection.ice.stun_client_maximum_transmits",
&stun_client_maximum_transmits);
branch->GetIntPref(
"media.peerconnection.ice.trickle_grace_period",
&ice_trickle_grace_period);
branch->GetIntPref(
"media.peerconnection.ice.tcp_so_sock_count",
&ice_tcp_so_sock_count);
branch->GetIntPref(
"media.peerconnection.ice.tcp_listen_backlog",
&ice_tcp_listen_backlog);
branch->GetCharPref(
"media.peerconnection.ice.force_interface",
getter_Copies(force_net_interface));
}
}
#endif
NR_reg_set_uint4((char *)"stun.client.maximum_transmits",
stun_client_maximum_transmits);
NR_reg_set_uint4((char *)NR_ICE_REG_TRICKLE_GRACE_PERIOD,
ice_trickle_grace_period);
NR_reg_set_int4((char *)NR_ICE_REG_ICE_TCP_SO_SOCK_COUNT,
ice_tcp_so_sock_count);
NR_reg_set_int4((char *)NR_ICE_REG_ICE_TCP_LISTEN_BACKLOG,
ice_tcp_listen_backlog);
NR_reg_set_char((char *)NR_ICE_REG_ICE_TCP_DISABLE, !tcp_enabled);
if (allow_loopback) {
NR_reg_set_char((char *)NR_STUN_REG_PREF_ALLOW_LOOPBACK_ADDRS, 1);
}
if (allow_link_local) {
NR_reg_set_char((char *)NR_STUN_REG_PREF_ALLOW_LINK_LOCAL_ADDRS, 1);
}
if (force_net_interface.Length() > 0) {
// Stupid cast.... but needed
const nsCString& flat = PromiseFlatCString(static_cast<nsACString&>(force_net_interface));
NR_reg_set_string((char *)NR_ICE_REG_PREF_FORCE_INTERFACE_NAME, const_cast<char*>(flat.get()));
}
}
// Create the ICE context
int r;
UINT4 flags = offerer ? NR_ICE_CTX_FLAGS_OFFERER:
NR_ICE_CTX_FLAGS_ANSWERER;
flags |= NR_ICE_CTX_FLAGS_AGGRESSIVE_NOMINATION;
if (policy == ICE_POLICY_RELAY) {
flags |= NR_ICE_CTX_FLAGS_RELAY_ONLY;
}
if (hide_non_default)
flags |= NR_ICE_CTX_FLAGS_ONLY_DEFAULT_ADDRS;
r = nr_ice_ctx_create(const_cast<char *>(name.c_str()), flags,
&ctx->ctx_);
if (r) {
MOZ_MTLOG(ML_ERROR, "Couldn't create ICE ctx for '" << name << "'");
return nullptr;
}
nr_interface_prioritizer *prioritizer = CreateInterfacePrioritizer();
if (!prioritizer) {
MOZ_MTLOG(LogLevel::Error, "Couldn't create interface prioritizer.");
return nullptr;
}
r = nr_ice_ctx_set_interface_prioritizer(ctx->ctx_, prioritizer);
if (r) {
MOZ_MTLOG(LogLevel::Error, "Couldn't set interface prioritizer.");
return nullptr;
}
if (ctx->generating_trickle()) {
r = nr_ice_ctx_set_trickle_cb(ctx->ctx_, &NrIceCtx::trickle_cb, ctx);
if (r) {
MOZ_MTLOG(ML_ERROR, "Couldn't set trickle cb for '" << name << "'");
return nullptr;
}
}
// Create the handler objects
ctx->ice_handler_vtbl_ = new nr_ice_handler_vtbl();
ctx->ice_handler_vtbl_->select_pair = &NrIceCtx::select_pair;
ctx->ice_handler_vtbl_->stream_ready = &NrIceCtx::stream_ready;
ctx->ice_handler_vtbl_->stream_failed = &NrIceCtx::stream_failed;
ctx->ice_handler_vtbl_->ice_completed = &NrIceCtx::ice_completed;
ctx->ice_handler_vtbl_->msg_recvd = &NrIceCtx::msg_recvd;
ctx->ice_handler_vtbl_->ice_checking = &NrIceCtx::ice_checking;
ctx->ice_handler_ = new nr_ice_handler();
ctx->ice_handler_->vtbl = ctx->ice_handler_vtbl_;
ctx->ice_handler_->obj = ctx;
// Create the peer ctx. Because we do not support parallel forking, we
// only have one peer ctx.
std::string peer_name = name + ":default";
r = nr_ice_peer_ctx_create(ctx->ctx_, ctx->ice_handler_,
const_cast<char *>(peer_name.c_str()),
&ctx->peer_);
if (r) {
MOZ_MTLOG(ML_ERROR, "Couldn't create ICE peer ctx for '" << name << "'");
return nullptr;
}
nsresult rv;
ctx->sts_target_ = do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv);
if (!NS_SUCCEEDED(rv))
return nullptr;
return ctx;
}
void
NrIceCtx::InitializeGlobals(bool allow_loopback,
bool tcp_enabled,
bool allow_link_local) {
// Initialize the crypto callbacks and logging stuff
if (!initialized) {
NR_reg_init(NR_REG_MODE_LOCAL);
nr_crypto_vtbl = &nr_ice_crypto_nss_vtbl;
initialized = true;
// Set the priorites for candidate type preferences.
// These numbers come from RFC 5245 S. 4.1.2.2
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_SRV_RFLX, 100);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_PEER_RFLX, 110);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_HOST, 126);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_RELAYED, 5);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_SRV_RFLX_TCP, 99);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_PEER_RFLX_TCP, 109);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_HOST_TCP, 125);
NR_reg_set_uchar((char *)NR_ICE_REG_PREF_TYPE_RELAYED_TCP, 0);
int32_t stun_client_maximum_transmits = 7;
int32_t ice_trickle_grace_period = 5000;
int32_t ice_tcp_so_sock_count = 3;
int32_t ice_tcp_listen_backlog = 10;
nsAutoCString force_net_interface;
nsresult res;
nsCOMPtr<nsIPrefService> prefs =
do_GetService("@mozilla.org/preferences-service;1", &res);
if (NS_SUCCEEDED(res)) {
nsCOMPtr<nsIPrefBranch> branch = do_QueryInterface(prefs);
if (branch) {
branch->GetIntPref(
"media.peerconnection.ice.stun_client_maximum_transmits",
&stun_client_maximum_transmits);
branch->GetIntPref(
"media.peerconnection.ice.trickle_grace_period",
&ice_trickle_grace_period);
branch->GetIntPref(
"media.peerconnection.ice.tcp_so_sock_count",
&ice_tcp_so_sock_count);
branch->GetIntPref(
"media.peerconnection.ice.tcp_listen_backlog",
&ice_tcp_listen_backlog);
branch->GetCharPref(
"media.peerconnection.ice.force_interface",
getter_Copies(force_net_interface));
}
}
NR_reg_set_uint4((char *)"stun.client.maximum_transmits",
stun_client_maximum_transmits);
NR_reg_set_uint4((char *)NR_ICE_REG_TRICKLE_GRACE_PERIOD,
ice_trickle_grace_period);
NR_reg_set_int4((char *)NR_ICE_REG_ICE_TCP_SO_SOCK_COUNT,
ice_tcp_so_sock_count);
NR_reg_set_int4((char *)NR_ICE_REG_ICE_TCP_LISTEN_BACKLOG,
ice_tcp_listen_backlog);
NR_reg_set_char((char *)NR_ICE_REG_ICE_TCP_DISABLE, !tcp_enabled);
if (allow_loopback) {
NR_reg_set_char((char *)NR_STUN_REG_PREF_ALLOW_LOOPBACK_ADDRS, 1);
}
if (allow_link_local) {
NR_reg_set_char((char *)NR_STUN_REG_PREF_ALLOW_LINK_LOCAL_ADDRS, 1);
}
if (force_net_interface.Length() > 0) {
// Stupid cast.... but needed
const nsCString& flat = PromiseFlatCString(static_cast<nsACString&>(force_net_interface));
NR_reg_set_string((char *)NR_ICE_REG_PREF_FORCE_INTERFACE_NAME, const_cast<char*>(flat.get()));
}
}
}
