iOS send APNS Push via CURL and key.p8

send_iOS_push.sh

#!/bin/bash

# -- Configuration --
DEVICE_TOKEN=XXXX439e2f0XXXXXXXXXXXXXXXXXXXXXXXXXX4728d9c688e8XXXXXX
AUTH_KEY="./AuthKey_xxxxxxxxx.p8"
AUTH_KEY_ID=XXXXXXXXX
TEAM_ID=375452VNBW
BUNDLE_ID=com.XXXXXXXXX.app
IS_PRODUCTION_SERVER=false


# -- Push Message --
read -r -d '' payload <<-'EOF'
{
   "aps": {
      "badge": 2,
      "category": "mycategory",
      "alert": {
         "title": "my title",
         "subtitle": "my subtitle",
         "body": "my body text message"
      }
   },
   "custom": {
      "mykey": "myvalue"
   }
}
EOF

#=======================================
base64() {
   openssl base64 -e -A | tr -- '+/' '-_' | tr -d =
}

sign() {
   printf "$1" | openssl dgst -binary -sha256 -sign "$AUTH_KEY" | base64
}

time=$(date +%s)
header=$(printf '{ "alg": "ES256", "kid": "%s" }' "$AUTH_KEY_ID" | base64)
claims=$(printf '{ "iss": "%s", "iat": %d }' "$TEAM_ID" "$time" | base64)
jwt="$header.$claims.$(sign $header.$claims)"

if [ "$IS_PRODUCTION_SERVER" = "true" ]; then
    endpoint=https://api.push.apple.com
else
    endpoint=https://api.sandbox.push.apple.com
fi

curl --verbose \
   --header "content-type: application/json" \
   --header "authorization: bearer $jwt" \
   --header "apns-topic: $BUNDLE_ID" \
   --data "$payload" \
   $endpoint/3/device/$DEVICE_TOKEN