<!DOCTYPE html> <html class=""> <head> <meta charset="utf-8"> <title>Threads</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta property="description" content="Telegram allows commenting on a channel post or on a generic supergroup message, thanks to message threads."> <meta property="og:title" content="Threads"> <meta property="og:image" content=""> <meta property="og:description" content="Telegram allows commenting on a channel post or on a generic supergroup message, thanks to message threads."> <link rel="icon" type="image/svg+xml" href="/img/website_icon.svg?4"> <link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png"> <link rel="alternate icon" href="/img/favicon.ico" type="image/x-icon" /> <link href="/css/bootstrap.min.css?3" rel="stylesheet"> <link href="/css/telegram.css?236" rel="stylesheet" media="screen"> <style> </style> </head> <body class="preload"> <div class="dev_page_wrap"> <div class="dev_page_head navbar navbar-static-top navbar-tg"> <div class="navbar-inner"> <div class="container clearfix"> <ul class="nav navbar-nav navbar-right hidden-xs"><li class="navbar-twitter"><a href="https://twitter.com/telegram" target="_blank" data-track="Follow/Twitter" onclick="trackDlClick(this, event)"><i class="icon icon-twitter"></i><span> Twitter</span></a></li></ul> <ul class="nav navbar-nav"> <li><a href="//telegram.org/">Home</a></li> <li class="hidden-xs"><a href="//telegram.org/faq">FAQ</a></li> <li class="hidden-xs"><a href="//telegram.org/apps">Apps</a></li> <li class="active"><a href="/api">API</a></li> <li class=""><a href="/mtproto">Protocol</a></li> <li class=""><a href="/schema">Schema</a></li> </ul> </div> </div> </div> <div class="container clearfix"> <div class="dev_page"> <div id="dev_page_content_wrap" class=" "> <div class="dev_page_bread_crumbs"><ul class="breadcrumb clearfix"><li><a href="/api" >API</a></li><i class="icon icon-breadcrumb-divider"></i><li><a href="/api/threads" >Threads</a></li></ul></div> <h1 id="dev_page_title">Threads</h1> <div id="dev_page_content"><!-- scroll_nav --> <p>Telegram allows commenting on a <a href="/api/channel">channel post</a> or on a generic <a href="/api/channel">supergroup message</a>, thanks to message threads.</p> <h3><a class="anchor" href="#message-threads" id="message-threads" name="message-threads"><i class="anchor-icon"></i></a>Message threads</h3> <p>Schema:</p> <pre><code><a href='/constructor/messageReplyHeader'>messageReplyHeader</a>#a6d57763 flags:<a href='/type/%23'>#</a> reply_to_scheduled:flags.2?<a href='/constructor/true'>true</a> forum_topic:flags.3?<a href='/constructor/true'>true</a> reply_to_msg_id:<a href='/type/int'>int</a> reply_to_peer_id:flags.0?<a href='/type/Peer'>Peer</a> reply_to_top_id:flags.1?<a href='/type/int'>int</a> = <a href='/type/MessageReplyHeader'>MessageReplyHeader</a>; <a href='/constructor/messageReplies'>messageReplies</a>#83d60fc2 flags:<a href='/type/%23'>#</a> comments:flags.0?<a href='/constructor/true'>true</a> replies:<a href='/type/int'>int</a> replies_pts:<a href='/type/int'>int</a> recent_repliers:flags.1?<a href='/type/Vector%20t'>Vector</a><<a href='/type/Peer'>Peer</a>> channel_id:flags.0?<a href='/type/long'>long</a> max_id:flags.2?<a href='/type/int'>int</a> read_max_id:flags.3?<a href='/type/int'>int</a> = <a href='/type/MessageReplies'>MessageReplies</a>; <a href='/constructor/message'>message</a>#38116ee0 flags:<a href='/type/%23'>#</a> out:flags.1?<a href='/constructor/true'>true</a> mentioned:flags.4?<a href='/constructor/true'>true</a> media_unread:flags.5?<a href='/constructor/true'>true</a> silent:flags.13?<a href='/constructor/true'>true</a> post:flags.14?<a href='/constructor/true'>true</a> from_scheduled:flags.18?<a href='/constructor/true'>true</a> legacy:flags.19?<a href='/constructor/true'>true</a> edit_hide:flags.21?<a href='/constructor/true'>true</a> pinned:flags.24?<a href='/constructor/true'>true</a> noforwards:flags.26?<a href='/constructor/true'>true</a> id:<a href='/type/int'>int</a> from_id:flags.8?<a href='/type/Peer'>Peer</a> peer_id:<a href='/type/Peer'>Peer</a> fwd_from:flags.2?<a href='/type/MessageFwdHeader'>MessageFwdHeader</a> via_bot_id:flags.11?<a href='/type/long'>long</a> reply_to:flags.3?<a href='/type/MessageReplyHeader'>MessageReplyHeader</a> date:<a href='/type/int'>int</a> message:<a href='/type/string'>string</a> media:flags.9?<a href='/type/MessageMedia'>MessageMedia</a> reply_markup:flags.6?<a href='/type/ReplyMarkup'>ReplyMarkup</a> entities:flags.7?<a href='/type/Vector%20t'>Vector</a><<a href='/type/MessageEntity'>MessageEntity</a>> views:flags.10?<a href='/type/int'>int</a> forwards:flags.10?<a href='/type/int'>int</a> replies:flags.23?<a href='/type/MessageReplies'>MessageReplies</a> edit_date:flags.15?<a href='/type/int'>int</a> post_author:flags.16?<a href='/type/string'>string</a> grouped_id:flags.17?<a href='/type/long'>long</a> reactions:flags.20?<a href='/type/MessageReactions'>MessageReactions</a> restriction_reason:flags.22?<a href='/type/Vector%20t'>Vector</a><<a href='/type/RestrictionReason'>RestrictionReason</a>> ttl_period:flags.25?<a href='/type/int'>int</a> = <a href='/type/Message'>Message</a>; ---functions--- <a href='/method/messages.search'>messages.search</a>#a0fda762 flags:<a href='/type/%23'>#</a> peer:<a href='/type/InputPeer'>InputPeer</a> q:<a href='/type/string'>string</a> from_id:flags.0?<a href='/type/InputPeer'>InputPeer</a> top_msg_id:flags.1?<a href='/type/int'>int</a> filter:<a href='/type/MessagesFilter'>MessagesFilter</a> min_date:<a href='/type/int'>int</a> max_date:<a href='/type/int'>int</a> offset_id:<a href='/type/int'>int</a> add_offset:<a href='/type/int'>int</a> limit:<a href='/type/int'>int</a> max_id:<a href='/type/int'>int</a> min_id:<a href='/type/int'>int</a> hash:<a href='/type/long'>long</a> = <a href='/type/messages.Messages'>messages.Messages</a>;</code></pre> <p>Threads are usually automatically created when replying to any message in a group.<br> For example, all replies to a message with ID <code>420</code> are associated to thread with ID <code>420</code>, unique to this group; this thread ID is contained in the <code>reply_to_top_id</code> field of <code>reply_to</code> <a href="/constructor/messageReplyHeader">messageReplyHeader</a>, along with an eventual <code>reply_to_msg_id</code>, for replies to messages within a thread.<br> Replies to messages in a thread are part of the same thread, and do not spawn new threads. </p> <p>When receiving a <a href="/constructor/message">message</a> from a group that is also the top of a thread (the message with ID <code>420</code>), the <code>replies</code> optional field will contain a <a href="/constructor/messageReplies">messageReplies</a> constructor, containing the message ID and <a href="/api/updates">PTS</a> of the latest reply in the thread, and the message ID of the latest read thread reply, along with the total number of replies in the thread. </p> <p>Replies to a thread can also be manually fetched using <a href="/method/messages.search">messages.search</a>, providing to <code>top_msg_id</code> the thread ID. </p> <h3><a class="anchor" href="#channel-comments" id="channel-comments" name="channel-comments"><i class="anchor-icon"></i></a>Channel comments</h3> <pre><code><a href='/constructor/messageReplies'>messageReplies</a>#83d60fc2 flags:<a href='/type/%23'>#</a> comments:flags.0?<a href='/constructor/true'>true</a> replies:<a href='/type/int'>int</a> replies_pts:<a href='/type/int'>int</a> recent_repliers:flags.1?<a href='/type/Vector%20t'>Vector</a><<a href='/type/Peer'>Peer</a>> channel_id:flags.0?<a href='/type/long'>long</a> max_id:flags.2?<a href='/type/int'>int</a> read_max_id:flags.3?<a href='/type/int'>int</a> = <a href='/type/MessageReplies'>MessageReplies</a>;</code></pre> <p>The same <a href="/constructor/messageReplies">messageReplies</a> constructor seen above will also be contained in channel posts, this time containing information about the comment section of a specific channel post.<br> The comment section of a channel post is simply the <a href="#message-threads">message thread</a> of the automatically forwarded channel message in the <a href="/api/discussion">linked discussion supergroup</a>; the ID of the linked discussion supergroup will be contained in the <code>messageReplies.channel_id</code> field. </p> <p>For channel posts, the <code>recent_repliers</code> field will also contain information about the last few comment posters for a specific thread, to show a small list of commenter profile pictures in client previews.</p> <h4><a class="anchor" href="#replies" id="replies" name="replies"><i class="anchor-icon"></i></a>@replies</h4> <pre><code><a href='/constructor/messageFwdHeader'>messageFwdHeader</a>#5f777dce flags:<a href='/type/%23'>#</a> imported:flags.7?<a href='/constructor/true'>true</a> from_id:flags.0?<a href='/type/Peer'>Peer</a> from_name:flags.5?<a href='/type/string'>string</a> date:<a href='/type/int'>int</a> channel_post:flags.2?<a href='/type/int'>int</a> post_author:flags.3?<a href='/type/string'>string</a> saved_from_peer:flags.4?<a href='/type/Peer'>Peer</a> saved_from_msg_id:flags.4?<a href='/type/int'>int</a> psa_type:flags.6?<a href='/type/string'>string</a> = <a href='/type/MessageFwdHeader'>MessageFwdHeader</a>; <a href='/constructor/messageReplyHeader'>messageReplyHeader</a>#a6d57763 flags:<a href='/type/%23'>#</a> reply_to_scheduled:flags.2?<a href='/constructor/true'>true</a> forum_topic:flags.3?<a href='/constructor/true'>true</a> reply_to_msg_id:<a href='/type/int'>int</a> reply_to_peer_id:flags.0?<a href='/type/Peer'>Peer</a> reply_to_top_id:flags.1?<a href='/type/int'>int</a> = <a href='/type/MessageReplyHeader'>MessageReplyHeader</a>; <a href='/constructor/message'>message</a>#38116ee0 flags:<a href='/type/%23'>#</a> out:flags.1?<a href='/constructor/true'>true</a> mentioned:flags.4?<a href='/constructor/true'>true</a> media_unread:flags.5?<a href='/constructor/true'>true</a> silent:flags.13?<a href='/constructor/true'>true</a> post:flags.14?<a href='/constructor/true'>true</a> from_scheduled:flags.18?<a href='/constructor/true'>true</a> legacy:flags.19?<a href='/constructor/true'>true</a> edit_hide:flags.21?<a href='/constructor/true'>true</a> pinned:flags.24?<a href='/constructor/true'>true</a> noforwards:flags.26?<a href='/constructor/true'>true</a> id:<a href='/type/int'>int</a> from_id:flags.8?<a href='/type/Peer'>Peer</a> peer_id:<a href='/type/Peer'>Peer</a> fwd_from:flags.2?<a href='/type/MessageFwdHeader'>MessageFwdHeader</a> via_bot_id:flags.11?<a href='/type/long'>long</a> reply_to:flags.3?<a href='/type/MessageReplyHeader'>MessageReplyHeader</a> date:<a href='/type/int'>int</a> message:<a href='/type/string'>string</a> media:flags.9?<a href='/type/MessageMedia'>MessageMedia</a> reply_markup:flags.6?<a href='/type/ReplyMarkup'>ReplyMarkup</a> entities:flags.7?<a href='/type/Vector%20t'>Vector</a><<a href='/type/MessageEntity'>MessageEntity</a>> views:flags.10?<a href='/type/int'>int</a> forwards:flags.10?<a href='/type/int'>int</a> replies:flags.23?<a href='/type/MessageReplies'>MessageReplies</a> edit_date:flags.15?<a href='/type/int'>int</a> post_author:flags.16?<a href='/type/string'>string</a> grouped_id:flags.17?<a href='/type/long'>long</a> reactions:flags.20?<a href='/type/MessageReactions'>MessageReactions</a> restriction_reason:flags.22?<a href='/type/Vector%20t'>Vector</a><<a href='/type/RestrictionReason'>RestrictionReason</a>> ttl_period:flags.25?<a href='/type/int'>int</a> = <a href='/type/Message'>Message</a>; <a href='/constructor/updateNewMessage'>updateNewMessage</a>#1f2b0afd message:<a href='/type/Message'>Message</a> pts:<a href='/type/int'>int</a> pts_count:<a href='/type/int'>int</a> = <a href='/type/Update'>Update</a>; <a href='/constructor/updateNewChannelMessage'>updateNewChannelMessage</a>#62ba04d9 message:<a href='/type/Message'>Message</a> pts:<a href='/type/int'>int</a> pts_count:<a href='/type/int'>int</a> = <a href='/type/Update'>Update</a>; ---functions--- <a href='/method/contacts.blockFromReplies'>contacts.blockFromReplies</a>#29a8962c flags:<a href='/type/%23'>#</a> delete_message:flags.0?<a href='/constructor/true'>true</a> delete_history:flags.1?<a href='/constructor/true'>true</a> report_spam:flags.2?<a href='/constructor/true'>true</a> msg_id:<a href='/type/int'>int</a> = <a href='/type/Updates'>Updates</a>; <a href='/method/contacts.resolveUsername'>contacts.resolveUsername</a>#f93ccba3 username:<a href='/type/string'>string</a> = <a href='/type/contacts.ResolvedPeer'>contacts.ResolvedPeer</a>;</code></pre> <p>Since a user can comment in channel posts without joining the actual <a href="/api/discussion">discussion supergroup</a>, there must be a way for them to receive notifications about replies in comment sections.<br> For this reason, a special <code>@replies</code> username is provided. Its ID for main and testing endpoints can be seen in the <a href="https://github.com/tdlib/td/blob/34cf869c02583c23b023f725dca30cd18efc82a3/td/telegram/ContactsManager.cpp#L4418">tdlib sources</a>. </p> <p>When someone replies to one of our messages in the comment section of a channel post, and the user is not subscribed to the discussion group, the client will receive two updates:</p> <ul> <li>An <a href="/constructor/updateNewChannelMessage">updateNewChannelMessage</a> from the discussion group itself, structured just like any other update coming from a subscribed group, with:<ul> <li><code>id</code> set to the ID of the reply</li> <li><code>from_id</code> set to the peer that replied to us</li> <li><code>peer_id</code> set to the peer of the <a href="/api/discussion">discussion group</a></li> <li><code>reply_to.reply_to_msg_id</code> set to the ID of our message</li> <li><code>reply_to.reply_to_top_id</code> set to the <a href="/api/threads">thread ID</a>. </li> </ul> </li> <li>An <a href="/constructor/updateNewMessage">updateNewMessage</a><ul> <li><code>id</code> set to the common ID sequence for users</li> <li><code>from_id</code> set to the peer of <code>@replies</code></li> <li><code>peer_id</code> set to our own peer</li> <li><code>fwd_from.saved_from_msg_id</code> set to the ID of the reply</li> <li><code>fwd_from.from_id</code> set to the peer that replied to us</li> <li><code>reply_to.reply_to_peer_id</code> set to the peer of the <a href="/api/discussion">discussion group</a></li> <li><code>reply_to.reply_to_msg_id</code> set to the ID of our message</li> <li><code>reply_to.reply_to_top_id</code> set to the <a href="/api/threads">thread ID</a></li> </ul> </li> </ul> <p>Clients should display messages coming from <code>@replies</code> as a read-only supergroup, with each reply displayed as a separate message from the author of the reply, with a "View in chat" button like for channel comments.</p></div> </div> </div> </div> <div class="footer_wrap"> <div class="footer_columns_wrap footer_desktop"> <div class="footer_column footer_column_telegram"> <h5>Telegram</h5> <div class="footer_telegram_description"></div> Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed. </div> <div class="footer_column"> <h5><a href="//telegram.org/faq">About</a></h5> <ul> <li><a href="//telegram.org/faq">FAQ</a></li> <li><a href="//telegram.org/privacy">Privacy</a></li> <li><a href="//telegram.org/press">Press</a></li> </ul> </div> <div class="footer_column"> <h5><a href="//telegram.org/apps#mobile-apps">Mobile Apps</a></h5> <ul> <li><a href="//telegram.org/dl/ios">iPhone/iPad</a></li> <li><a href="//telegram.org/android">Android</a></li> <li><a href="//telegram.org/dl/web">Mobile Web</a></li> </ul> </div> <div class="footer_column"> <h5><a href="//telegram.org/apps#desktop-apps">Desktop Apps</a></h5> <ul> <li><a href="//desktop.telegram.org/">PC/Mac/Linux</a></li> <li><a href="//macos.telegram.org/">macOS</a></li> <li><a href="//telegram.org/dl/web">Web-browser</a></li> </ul> </div> <div class="footer_column footer_column_platform"> <h5><a href="/">Platform</a></h5> <ul> <li><a href="/api">API</a></li> <li><a href="//translations.telegram.org/">Translations</a></li> <li><a href="//instantview.telegram.org/">Instant View</a></li> </ul> </div> </div> <div class="footer_columns_wrap footer_mobile"> <div class="footer_column"> <h5><a href="//telegram.org/faq">About</a></h5> </div> <div class="footer_column"> <h5><a href="//telegram.org/blog">Blog</a></h5> </div> <div class="footer_column"> <h5><a href="//telegram.org/apps">Apps</a></h5> </div> <div class="footer_column"> <h5><a href="/">Platform</a></h5> </div> <div class="footer_column"> <h5><a href="//telegram.org/press">Press</a></h5> </div> </div> </div> </div> <script src="/js/main.js?47"></script> <script src="/js/jquery.min.js?1"></script> <script src="/js/bootstrap.min.js?1"></script> <script>window.initDevPageNav&&initDevPageNav(); backToTopInit("Go up"); removePreloadInit(); </script> </body> </html>