A small tool to view real-world ActivityPub objects as JSON! Enter a URL
or username from Mastodon or a similar service below, and we'll send a
request with
the right
Accept
header
to the server to view the underlying object.
{
"@context": [
"https://www.w3.org/ns/activitystreams",
{
"ostatus": "http://ostatus.org#",
"atomUri": "ostatus:atomUri",
"inReplyToAtomUri": "ostatus:inReplyToAtomUri",
"conversation": "ostatus:conversation",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"votersCount": "toot:votersCount",
"Hashtag": "as:Hashtag"
}
],
"id": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887",
"type": "Note",
"summary": null,
"inReplyTo": null,
"published": "2025-06-18T13:17:04Z",
"url": "https://mastodon.bsd.cafe/@zirias/114704555967279887",
"attributedTo": "https://mastodon.bsd.cafe/users/zirias",
"to": [
"https://www.w3.org/ns/activitystreams#Public"
],
"cc": [
"https://mastodon.bsd.cafe/users/zirias/followers"
],
"sensitive": false,
"atomUri": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887",
"inReplyToAtomUri": null,
"conversation": "tag:bsd.cafe,2025-06-18:objectId=18426549:objectType=Conversation",
"content": "<p>I need help. First the question: On <a href=\"https://mastodon.bsd.cafe/tags/FreeBSD\" class=\"mention hashtag\" rel=\"tag\">#<span>FreeBSD</span></a>, with all ports built with <a href=\"https://mastodon.bsd.cafe/tags/LibreSSL\" class=\"mention hashtag\" rel=\"tag\">#<span>LibreSSL</span></a>, can I somehow use the <a href=\"https://mastodon.bsd.cafe/tags/clang\" class=\"mention hashtag\" rel=\"tag\">#<span>clang</span></a> <a href=\"https://mastodon.bsd.cafe/tags/thread\" class=\"mention hashtag\" rel=\"tag\">#<span>thread</span></a> <a href=\"https://mastodon.bsd.cafe/tags/sanitizer\" class=\"mention hashtag\" rel=\"tag\">#<span>sanitizer</span></a> on a binary actually using LibreSSL and get sane output?</p><p>What I now observe debugging <a href=\"https://mastodon.bsd.cafe/tags/swad\" class=\"mention hashtag\" rel=\"tag\">#<span>swad</span></a>:</p><p>- A version built with <a href=\"https://mastodon.bsd.cafe/tags/OpenSSL\" class=\"mention hashtag\" rel=\"tag\">#<span>OpenSSL</span></a> (from base) doesn't crash. At least I tried very hard, really stressing it with <a href=\"https://mastodon.bsd.cafe/tags/jmeter\" class=\"mention hashtag\" rel=\"tag\">#<span>jmeter</span></a>, to no avail. Built with LibreSSL, it does crash.<br />- Less relevant: the OpenSSL version also performs slightly better, but needs almost twice the RAM<br />- The thread sanitizer finds nothing to complain when built with OpenSSL<br />- It complains a lot with LibreSSL, but the reports look "fishy", e.g. it seems to intercept some OpenSSL API functions (like SHA384_Final)<br />- It even complains when running with a single-thread event loop.<br />- I use a single SSL_CTX per listening socket, creating SSL objects from it per connection ... also with multithreading; according to a few sources, this should be supported and safe.<br />- I can't imagine doing that on a *single* thread could break with LibreSSL, I mean, this would make SSL_CTX pretty much pointless<br />- I *could* imagine sharing the SSL_CTX with multiple threads to create their SSL objects from *might* not be safe with LibreSSL, but no idea how to verify as long as the thread sanitizer gives me "delusional" output 😳</p>",
"contentMap": {
"en": "<p>I need help. First the question: On <a href=\"https://mastodon.bsd.cafe/tags/FreeBSD\" class=\"mention hashtag\" rel=\"tag\">#<span>FreeBSD</span></a>, with all ports built with <a href=\"https://mastodon.bsd.cafe/tags/LibreSSL\" class=\"mention hashtag\" rel=\"tag\">#<span>LibreSSL</span></a>, can I somehow use the <a href=\"https://mastodon.bsd.cafe/tags/clang\" class=\"mention hashtag\" rel=\"tag\">#<span>clang</span></a> <a href=\"https://mastodon.bsd.cafe/tags/thread\" class=\"mention hashtag\" rel=\"tag\">#<span>thread</span></a> <a href=\"https://mastodon.bsd.cafe/tags/sanitizer\" class=\"mention hashtag\" rel=\"tag\">#<span>sanitizer</span></a> on a binary actually using LibreSSL and get sane output?</p><p>What I now observe debugging <a href=\"https://mastodon.bsd.cafe/tags/swad\" class=\"mention hashtag\" rel=\"tag\">#<span>swad</span></a>:</p><p>- A version built with <a href=\"https://mastodon.bsd.cafe/tags/OpenSSL\" class=\"mention hashtag\" rel=\"tag\">#<span>OpenSSL</span></a> (from base) doesn't crash. At least I tried very hard, really stressing it with <a href=\"https://mastodon.bsd.cafe/tags/jmeter\" class=\"mention hashtag\" rel=\"tag\">#<span>jmeter</span></a>, to no avail. Built with LibreSSL, it does crash.<br />- Less relevant: the OpenSSL version also performs slightly better, but needs almost twice the RAM<br />- The thread sanitizer finds nothing to complain when built with OpenSSL<br />- It complains a lot with LibreSSL, but the reports look "fishy", e.g. it seems to intercept some OpenSSL API functions (like SHA384_Final)<br />- It even complains when running with a single-thread event loop.<br />- I use a single SSL_CTX per listening socket, creating SSL objects from it per connection ... also with multithreading; according to a few sources, this should be supported and safe.<br />- I can't imagine doing that on a *single* thread could break with LibreSSL, I mean, this would make SSL_CTX pretty much pointless<br />- I *could* imagine sharing the SSL_CTX with multiple threads to create their SSL objects from *might* not be safe with LibreSSL, but no idea how to verify as long as the thread sanitizer gives me "delusional" output 😳</p>"
},
"updated": "2025-06-18T13:22:32Z",
"attachment": [],
"tag": [
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/freebsd",
"name": "#freebsd"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/libressl",
"name": "#libressl"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/clang",
"name": "#clang"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/thread",
"name": "#thread"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/sanitizer",
"name": "#sanitizer"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/swad",
"name": "#swad"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/openssl",
"name": "#openssl"
},
{
"type": "Hashtag",
"href": "https://mastodon.bsd.cafe/tags/jmeter",
"name": "#jmeter"
}
],
"replies": {
"id": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887/replies",
"type": "Collection",
"first": {
"type": "CollectionPage",
"next": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887/replies?min_id=114715208717217540&page=true",
"partOf": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887/replies",
"items": [
"https://mastodon.bsd.cafe/users/zirias/statuses/114704852129352710",
"https://mastodon.bsd.cafe/users/zirias/statuses/114715208717217540"
]
}
},
"likes": {
"id": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887/likes",
"type": "Collection",
"totalItems": 3
},
"shares": {
"id": "https://mastodon.bsd.cafe/users/zirias/statuses/114704555967279887/shares",
"type": "Collection",
"totalItems": 5
}
}