{"id":897,"date":"2022-05-26T17:21:42","date_gmt":"2022-05-26T15:21:42","guid":{"rendered":"https:\/\/blog.beevoip.it\/?p=897"},"modified":"2024-02-03T01:08:17","modified_gmt":"2024-02-03T00:08:17","slug":"protocollo-sip-il-metodo-options","status":"publish","type":"post","link":"https:\/\/www.beevoip.it\/blog\/protocollo-sip-il-metodo-options\/","title":{"rendered":"SIP: il metodo OPTIONS"},"content":{"rendered":"\n

A cosa serve il metodo OPTIONS<\/h3>\n\n\n\n

Il metodo OPTIONS permette ad uno User Agent di interrogare un secondo User Agent, o un server Proxy, riguardo le sue capacit\u00e0. Tramite questo metodo, \u00e8 possibile avere informazioni sui metodi supportati, sulle estensioni, tipo di contenuto, codec ed altro ancora, senza effettivamente chiamare l’altra parte interessata.<\/p>\n\n\n\n

Asterisk lo utilizza anche per controllare se un client \u00e8 connesso e funzionante, in quanto a seguito di un options ci si aspetta sempre una risposta. Per abilitare questa verifica, va impostato il comando qualify=yes nel file sip.conf<\/p>\n\n\n\n

Com\u2019\u00e8 composto?<\/h3>\n\n\n
\n
\"Analisi
Pacchetto domanda OPTIONS<\/figcaption><\/figure>\n<\/div>\n\n
\n
\"Analisi
Pacchetto risposta OPTIONS<\/figcaption><\/figure>\n<\/div>\n\n\n

Anche qui troviamo i soliti campi di intestazione che abbiamo imparato a conoscere negli scorsi articoli, ed in questo caso specifico possiamo notare che la risposta contiene un pacchetto SDP con le informazioni richieste.<\/p>\n\n\n\n

Con l’Options concludiamo la lista dei metodi fondamentali definiti nel documento RFC3261<\/a>. Trovi gli altri metodi nella categoria “VOIP” del blog, o cliccando qui<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Il metodo options permette ad un User Agent di interrogare un secondo User Agent, o un server Proxy, riguardo le sue capacit\u00e0.<\/p>\n","protected":false},"author":4,"featured_media":3417,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"video","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7],"tags":[27],"class_list":{"0":"post-897","1":"post","2":"type-post","3":"status-publish","4":"format-video","5":"has-post-thumbnail","7":"category-voip","8":"tag-metodi-sip","9":"post_format-post-format-video"},"yoast_head":"\nSIP: il metodo OPTIONS - Blog Beevoip<\/title>\n<meta name=\"description\" content=\"Il metodo options permette ad un User Agent di interrogare un secondo User Agent, o un server Proxy, riguardo le sue capacit\u00e0.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.beevoip.it\/blog\/protocollo-sip-il-metodo-options\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SIP: il metodo OPTIONS - 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