Better handling of empty result from `curl`

[bac0id]

curl from Internet Archive frequently returns empty, which results in meaningless empty lines being printed on the log. In most cases the output is like this:

2025-02-18 12:16:43 [Status request failed] https://example.com
(an empty line here)
2025-02-18 12:16:53 [Request failed] https://example.com
(another empty line here)

There lines are for showing info/error from IA. Can we print something other than empty lines here? Related codes:

wayback-machine-spn-scripts/spn.sh

Lines 295 to 297 in 88d60d1

	if [[ -z "$message" ]]; then
	if [[ "$request" =~ "429 Too Many Requests" ]] || [[ "$request" == "" ]]; then
	echo "$request"

wayback-machine-spn-scripts/spn.sh

Lines 431 to 436 in 88d60d1

	request=$(curl "${curl_args[@]}" -s -m 60 "https://web.archive.org/save/status/$job_id")
	status=$(echo "$request" | grep -Eo '"status":"([^"\\]|\\["\\])*"' | head -1)
	if [[ -z "$status" ]]; then
	echo "$(date -u '+%Y-%m-%d %H:%M:%S') [Status request failed] $1"
	if [[ "$request" =~ "429 Too Many Requests" ]] || [[ "$request" == "" ]]; then
	echo "$request"

Extra info:

I did some research. There empty response seems comes from SSL Error before/during HTTP request. I tried sending frequent HTTP requests to IA by Python and kept getting this error:

HTTPSConnectionPool(host='web.archive.org', port=443): Max retries exceeded with url: /save/status/user (Caused by SSLError(SSLEOFError(8, '[SSL: UNEXPECTED_EOF_WHILE_READING] EOF occurred in violation of protocol (_ssl.c:1000)')))

[overcast07]

If there is a flag that allows curl to output an error message to stderr in this situation, then we could add that. If it doesn't natively have this capability then it might not be worth the trouble to change it.