Webscoket error connection problem in bigblueutton - bigbluebutton

Question

I just deploy bigbluebutton using amazon lightsail. Everything is working fine except audio call and video. When I'm trying to connect audio call and video call I'm getting webscket error.
I've already disable all the firewall.
I deploy bigbluebutton using bbb-install.sh
https://github.com/bigbluebutton/bbb-install
Here is system specifications
ip-xx.xx.xx.xx
description: Computer
product: HVM domU
vendor: Xen
version: 4.2.amazon
serial: ec222835-0f97-80b8-2cbf-361289de5846
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: boot=normal uuid=352822EC-970F-B880-2CBF-361289DE5846
*-core
description: Motherboard
physical id: 0
*-firmware
description: BIOS
vendor: Xen
physical id: 0
version: 4.2.amazon
date: 08/24/2006
size: 96KiB
capabilities: pci edd
*-cpu:0
description: CPU
product: Intel(R) Xeon(R) CPU E5-2686 v4 # 2.30GHz
vendor: Intel Corp.
physical id: 401
bus info: cpu#0
slot: CPU 1
size: 2300MHz
capacity: 2300MHz
width: 64 bits
capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp x86-64 constant_tsc rep_good nopl xtopology pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt
*-cpu:1
description: CPU
vendor: Intel
physical id: 402
bus info: cpu#1
slot: CPU 2
size: 2300MHz
capacity: 2300MHz
*-cpu:2
description: CPU
vendor: Intel
physical id: 403
bus info: cpu#2
slot: CPU 3
size: 2300MHz
capacity: 2300MHz
*-cpu:3
description: CPU
vendor: Intel
physical id: 404
bus info: cpu#3
slot: CPU 4
size: 2300MHz
capacity: 2300MHz
*-cpu:4
description: CPU
vendor: Intel
physical id: 405
bus info: cpu#4
slot: CPU 5
size: 2300MHz
capacity: 2300MHz
*-cpu:5
description: CPU
vendor: Intel
physical id: 406
bus info: cpu#5
slot: CPU 6
size: 2300MHz
capacity: 2300MHz
*-cpu:6
description: CPU
vendor: Intel
physical id: 407
bus info: cpu#6
slot: CPU 7
size: 2300MHz
capacity: 2300MHz
*-cpu:7
description: CPU
vendor: Intel
physical id: 408
bus info: cpu#7
slot: CPU 8
size: 2300MHz
capacity: 2300MHz
*-memory
description: System Memory
physical id: 1000
size: 32GiB
*-bank:0
description: DIMM RAM
physical id: 0
slot: DIMM 0
size: 16GiB
width: 64 bits
*-bank:1
description: DIMM RAM
physical id: 1
slot: DIMM 1
size: 16GiB
width: 64 bits
*-pci
description: Host bridge
product: 440FX - 82441FX PMC [Natoma]
vendor: Intel Corporation
physical id: 100
bus info: pci#0000:00:00.0
version: 02
width: 32 bits
clock: 33MHz
*-isa
description: ISA bridge
product: 82371SB PIIX3 ISA [Natoma/Triton II]
vendor: Intel Corporation
physical id: 1
bus info: pci#0000:00:01.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: isa bus_master
configuration: latency=0
*-ide
description: IDE interface
product: 82371SB PIIX3 IDE [Natoma/Triton II]
vendor: Intel Corporation
physical id: 1.1
bus info: pci#0000:00:01.1
version: 00
width: 32 bits
clock: 33MHz
capabilities: ide isa_compatibility_mode-only_controller__supports_bus_mastering bus_master
configuration: driver=ata_piix latency=64
resources: irq:0 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:c100(size=16)
*-bridge UNCLAIMED
description: Bridge
product: 82371AB/EB/MB PIIX4 ACPI
vendor: Intel Corporation
physical id: 1.3
bus info: pci#0000:00:01.3
version: 01
width: 32 bits
clock: 33MHz
capabilities: bridge bus_master
configuration: latency=0
*-display UNCLAIMED
description: VGA compatible controller
product: GD 5446
vendor: Cirrus Logic
physical id: 2
bus info: pci#0000:00:02.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: vga_controller bus_master
configuration: latency=0
resources: memory:f0000000-f1ffffff memory:f3000000-f3000fff
*-generic
description: Unassigned class
product: Xen Platform Device
vendor: XenSource, Inc.
physical id: 3
bus info: pci#0000:00:03.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: bus_master
configuration: driver=xen-platform-pci latency=0
resources: irq:28 ioport:c000(size=256) memory:f2000000-f2ffffff
*-network
description: Ethernet interface
physical id: 1
logical name: eth0
serial: 02:0c:36:8d:8e:60
capabilities: ethernet physical
configuration: broadcast=yes driver=vif ip=172.26.9.115 link=yes multicast=yes
After searching here and there i found this one, But i'm also not sure weather this one works properly or not.
https://github.com/bigbluebutton/bigbluebutton/issues/2628#issuecomment-635107717
What is difference between single colon and double colon in this file
WebRtcEndpoint.conf.ini
I'm also little bit confused about some of the terminology used here like internal ip and external ip.
and
stunServerAddress=64.233.177.127 stunServerPort=19302 Just copy from github.
What kind of ip shoud i use here, internal ip or external ip.
`

Answer 1

Check /opt/freeswitch/etc/freeswitch/sip_profiles/external.xml settings firstly.
if your binding is like that:
ws-binding: :5066
wss-binding: :7443
change it to like this:
ws-binding: your_external_ip_address:5066
wss-binding: your_external_ip_address:7443
Your external ip address is same with external_sip_ip address.
Then dont forget to restart bbb (bbb-conf --restart)

Answer 2

I think that this problem has arisen from a firewall issue, Check your firewall and be sure that UDP traffic can pass over the firewall.