I am attempting to configure my google cloud instance to allow external traffic so I can set up a web socket; however despite adding a rule for all external TCP/IP traffic, I can't access it. My rules are:
gcloud compute firewall-rules list
NAME NETWORK SRC_RANGES RULES SRC_TAGS TARGET_TAGS
default-allow-ssh default 0.0.0.0/0 tcp:22
external-traffic default 0.0.0.0/0 tcp,udp
gcloud compute instances list
NAME ZONE MACHINE_TYPE PREEMPTIBLE INTERNAL_IP EXTERNAL_IP STATUS
pi-server us-central1-a n1-standard-1 **.***.*.* **.***.***.*** RUNNING
I have configured this as a static IP (this is displayed in my cloud dashboard):
Name External Address Region Type In use by
crypto-iris-****** **.***.***.*** us-central1 Static VM instance my_instance_name (Zone a)
I also have some Go client/server web socket code that works perfectly on my computer using localhost:8080 as address. So, my question is: can I simply replace localhost with the external static IP of my instance under these rules?
My client makes use of "github.com/gorilla/websocket" on port 8080. Output of client locally is:
connecting to ws://23.251.148.133:8080/echo
dial:dial tcp 23.251.148.133:8080: getsockopt: operation timed out
exit status 1
Code upon request, if anyone wants to see it.
Problem: my golang/gorilla server was hosting on localhost:8080. I changed it to 0.0.0.0:8080. Smooth sailing after that.
See following post about this, but basically the server was listening to the local loopback address (available only to local machine) instead of the outside world.