Hi I am trying to Authenticate Nakama with Google using Google Play Games Service in Unity. I have setup Google Cloud OAuth (tried oauth in OAuth Playground and it is working correctly) but when I try to authenticate in-game, or try to manually use authentication code from google play games in Nakama Console, it gives out the following error.
DBG social/social.go:348 > ts=2025-07-15T05:15:02.293Z msg=Checking Google ID idToken=<token>
DBG social/social.go:339 > ts=2025-07-15T05:15:02.356Z msg=Failed to exchange authorization code for a token. error=Post "": unsupported protocol scheme ""
DBG social/social.go:430 > ts=2025-07-15T05:15:02.357Z msg=Failed to exchange an authorization code for an access token. auth_token=<token> error=failed to exchange authorization code for a token
My Setup
- Server Version: 3.26.0+1645d207 | cockroachdb {Docker Based} Hosted on AWS Cloud, DNS Routing setup using Cloudflare. I am using separate DNS for Console port and Backend port respectively.
- Unity Version 2022.3.59f1, SDK Version: 3.16.0, Google Play Games Plugin Version: 2.0.0
- Unity SDK Version: 3.16.0.
Docker Compose File
services:
cockroachdb:
image: cockroachdb/cockroach:latest-v23.1
command: start-single-node --insecure --store=attrs=ssd,path=/var/lib/cockroach/
container_name: nk_cockroachdb
restart: always
volumes:
- data:/var/lib/cockroach
ports:
- "26257:26257"
- "8080:8080"
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:8080/health?ready=1"]
interval: 3s
timeout: 3s
retries: 5
nakama:
build: .
container_name: nk_backend
depends_on:
cockroachdb:
condition: service_healthy
prometheus:
condition: service_started
entrypoint:
- "/bin/sh"
- "-ecx"
- >
/nakama/nakama migrate up --database.address root@cockroachdb:26257 &&
exec /nakama/nakama --name nakama1 --database.address root@cockroachdb:26257 --logger.level DEBUG --session.token_expiry_sec 7200 --metrics.prometheus_port 9100
expose:
- "7349"
- "7350"
- "7351"
- "9100"
healthcheck:
test: ["CMD", "curl", "-f", "http://localhost:7350/"]
interval: 10s
timeout: 5s
retries: 5
links:
- "cockroachdb:db"
ports:
- "7349:7349"
- "7350:7350"
- "7351:7351"
restart: unless-stopped
prometheus:
image: prom/prometheus
container_name: nk_prometheus
entrypoint: /bin/sh -c
command: |
'sh -s <<EOF
cat > ./prometheus.yml <<EON
global:
scrape_interval: 15s
evaluation_interval: 15s
scrape_configs:
- job_name: prometheus
static_configs:
- targets: ['localhost:9090']
- job_name: nakama
metrics_path: /
static_configs:
- targets: ['nakama:9100']
EON
prometheus --config.file=./prometheus.yml
EOF'
ports:
- "9090:9090"
volumes:
data:
local.yml File
console:
max_message_size_bytes: 409600
logger:
level: "DEBUG"
runtime:
path: "/nakama/data/modules"
js_entrypoint: "index.js"
session:
token_expiry_sec: 7200 # 2 hours
socket:
max_message_size_bytes: 4096 # reserved buffer
max_request_size_bytes: 131072
google_auth:
credentials_json: |
{
"web": {
"client_id":"<my client_id>.apps.googleusercontent.com",
"project_id":"<project_id>",
"auth_uri":"https://accounts.google.com/o/oauth2/auth",
"token_uri":"https://oauth2.googleapis.com/token",
"auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs",
"client_secret":"<client_secret>",
"redirect_uris": [
"http://localhost:7350/v2/account/authenticate/google",
"http://api-nakama.mrzee.net/v2/account/authenticate/google"
],
"javascript_origins": [
"https://dev.nakama.mrzee.net"
]
}
}
I am using the following Dockerfile along with the docker-compose. I build the image and then compose up.
FROM heroiclabs/nakama-pluginbuilder:3.26.0 AS builder
ENV GO111MODULE on
ENV CGO_ENABLED 1
ENV GOPRIVATE "github.com/heroiclabs/nakama-project-template"
WORKDIR /backend
COPY . .
RUN go build --trimpath --mod=vendor --buildmode=plugin -o ./backend.so
FROM heroiclabs/nakama:3.26.0
COPY --from=builder /backend/backend.so /nakama/data/modules
COPY --from=builder /backend/*.lua /nakama/data/modules/
COPY --from=builder /backend/build/*.js /nakama/data/modules/
COPY --from=builder /backend/local.yml /nakama/data/
