commit cae36639e6e29cd61d9bc747864fee9ca1ef98ce
author James Kuszmaul <jabukuszmaul@gmail.com> Fri Oct 29 22:02:56 2021 -0700
committer James Kuszmaul <jabukuszmaul@gmail.com> Sat Nov 06 17:25:36 2021 -0700
tree 5405917631ea0c05f73bce454d48651e8aa6b03c
parent ba77b7e5880ad3d93a1f4b6be2864f877a17a7be

Force rawrtc to load ice candidates on ports 5800-5810

For forcing chrome (on Windows) to do a similar limit, see
https://getadmx.com/?Category=Chrome&Policy=Google.Policies.Chrome::WebRtcUdpPortRange
wherein you set the Software\Policies\Google\Chrome\WebRtcUdpPortRange
registry setting to "5800-5810"

Change-Id: I943b75b83eb93b4931f2b0cde799d82dcaac2b84
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>

aos/network/rawrtc.cc

diff --git a/aos/network/rawrtc.cc b/aos/network/rawrtc.cc
index a92b408..89141db 100644
--- a/aos/network/rawrtc.cc
+++ b/aos/network/rawrtc.cc
@@ -12,6 +12,11 @@
 #include "flatbuffers/flatbuffers.h"
 #include "glog/logging.h"
 
+DEFINE_int32(min_ice_port, -1,
+             "Minimum port number to use for ICE candidates.");
+DEFINE_int32(max_ice_port, -1,
+             "Maximum port number to use for ICE candidates.");
+
 namespace aos {
 namespace web_proxy {
 namespace {
@@ -186,6 +191,13 @@
   CHECK_RAWRTC(rawrtc_peer_connection_configuration_set_sctp_buffer_length(
       configuration, TRANSPORT_BUFFER_LENGTH, TRANSPORT_BUFFER_LENGTH));
 
+  if (FLAGS_min_ice_port >= 0 && FLAGS_max_ice_port >= 0) {
+    CHECK_LT(FLAGS_min_ice_port, FLAGS_max_ice_port);
+    // Set the port range to use for ICE candidates.
+    CHECK_RAWRTC(rawrtc_peer_connection_configuration_set_ice_udp_port_range(
+        configuration, FLAGS_min_ice_port, FLAGS_max_ice_port));
+  }
+
   // Create peer connection
   CHECK_RAWRTC(rawrtc_peer_connection_create(
       &connection_, configuration, StaticNegotiationNeededHandler,