vcl 4.0; import std; backend default { .host = "127.0.0.1"; .port = "4000"; } # ACL for IPs that are allowed to PURGE data from the cache acl purge { "127.0.0.1"; } sub vcl_recv { # Redirect HTTP to HTTPS if (std.port(server.ip) != 443) { set req.http.x-redir = "https://" + req.http.host + req.url; return (synth(750, "")); } # Pipe if WebSockets request is coming through if (req.http.upgrade ~ "(?i)websocket") { return (pipe); } # Allow purging of the cache if (req.method == "PURGE") { if (!client.ip ~ purge) { return(synth(405,"Not allowed.")); } return(purge); } # Pleroma MediaProxy - strip headers that will affect caching if (req.url ~ "^/proxy/") { unset req.http.Cookie; unset req.http.Authorization; unset req.http.Accept; return (hash); } # Hack to enable a Terms of Service page missing from Pleroma if (req.url ~ "^/about/more$") { set req.http.x-redir = "https://" + req.http.host + "/static/terms-of-service.html"; return (synth(750, "")); } # Strip headers that will affect caching from all other static content # This also permits caching of individual toots and AP Activities if ((req.url ~ "^/(media|notice|static)/") || (req.url ~ "(?i)\.(html|js|css|jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|svg|swf|ttf|pdf|woff|woff2)$")) { unset req.http.Cookie; unset req.http.Authorization; return (hash); } # Everything else should just be piped to Pleroma return (pipe); } sub vcl_backend_response { # gzip text content if (beresp.http.content-type ~ "(text|text/css|application/x-javascript|application/javascript)") { set beresp.do_gzip = true; } # etags are bad unset beresp.http.etag; # Don't cache objects that require authentication if (beresp.http.Authorization && !beresp.http.Cache-Control ~ "public") { set beresp.uncacheable = true; return (deliver); } # Default object caching of 86400s; set beresp.ttl = 86400s; # Allow serving cached content for 6h in case backend goes down set beresp.grace = 6h; # Do not cache 5xx responses if (beresp.status == 500 || beresp.status == 502 || beresp.status == 503 || beresp.status == 504) { set beresp.uncacheable = true; return (abandon); } # Do not cache redirects and errors if ((beresp.status >= 300) && (beresp.status < 500)) { set beresp.uncacheable = true; set beresp.ttl = 30s; return (deliver); } # Pleroma MediaProxy internally sets headers properly if (bereq.url ~ "^/proxy/") { return (deliver); } # Strip cache-restricting headers from Pleroma on static content that we want to cache # Also enable streaming of cached content to clients (no waiting for Varnish to complete backend fetch) if ((bereq.url ~ "^/(notice)/") || (bereq.url ~ "(?i)\.(js|css|jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|svg|swf|ttf|pdf|woff|woff2)$")) { unset beresp.http.set-cookie; unset beresp.http.Cache-Control; unset beresp.http.x-request-id; set beresp.http.Cache-Control = "public, max-age=86400"; set beresp.do_stream = true; } } # The synthetic response for 301 redirects sub vcl_synth { if (resp.status == 750) { set resp.status = 301; set resp.http.Location = req.http.x-redir; return(deliver); } } # Ensure WebSockets through the pipe do not close prematurely sub vcl_pipe { if (req.http.upgrade) { set bereq.http.upgrade = req.http.upgrade; set bereq.http.connection = req.http.connection; } }