chore: add icecast stress script (#2185)

tools/icecast-stress.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+set -eu
+
+error() {
+  echo >&2 "error: $*"
+  exit 1
+}
+
+command -v curl > /dev/null || error "curl command not found!"
+
+# Run concurrent curls which download from url to /dev/null.
+url="$1"
+
+# max concurrent calls
+max=1000
+# call duration (in seconds)
+duration=100
+# number of calls to start in batch
+batch=10
+# time to wait before starting a new batch of calls (in seconds)
+delay=1
+
+count=0
+while [[ "$count" -le "$max" ]]; do
+  echo "starting $batch new calls ($count)"
+  for ((i = 1; i <= batch; i++)); do
+    curl -o /dev/null -m "$duration" -s "$url" &
+  done
+  count=$((count + batch))
+
+  sleep "$delay"
+done
+echo "waiting for calls to finish"
+wait
+echo "done"