Message channel

Author: f | 2025-04-24

Message Channel Implementations; Channel Interceptors; MessagingTemplate; Configuring Message Channels; Special Channels; Poller; Channel Adapter; Messaging Bridge; Message; Message Channel. A message channel is use to transport the message from one messaging endpoint to another. It integrate the messaging endpoints. Message channel used

Channel Message Limitations - Channel Messaging - Messaging

GL_OES_mapbuffer, GL_OES_get_program_binary, GL_OES_depth24, GL_OES_compressed_EAC_RG11_unsigned_texture, GL_OES_draw_buffers_indexed, GL_ANGLE_multi_draw, GL_EXT_instanced_arrays, GL_ANGLE_program_cache_control, GL_EXT_read_format_bgra, GL_OVR_multiview2, GL_ANGLE_base_vertex_base_instance, GL_ANGLE_provoking_vertex, GL_OES_texture_half_float_linear, GL_EXT_sRGB, GL_EXT_texture_format_BGRA8888, GL_KHR_parallel_shader_compile, GL_ANGLE_texture_usage, GL_OES_texture_border_clamp, GL_EXT_texture_compression_bptc, GL_OES_vertex_array_object, GL_EXT_draw_buffers, GL_EXT_texture_filter_anisotropic, GL_EXT_EGL_image_external_wrap_modes, GL_OES_compressed_EAC_RG11_signed_texture, GL_OVR_multiview, GL_EXT_multisampled_render_to_texture, GL_OES_surfaceless_context, GL_ANGLE_pack_reverse_row_order, GL_OES_compressed_ETC2_RGBA8_texture, GL_NV_fence, GL_OES_compressed_ETC2_RGB8_texture, GL_OES_standard_derivatives, GL_ANGLE_framebuffer_blit, GL_ANGLE_robust_client_memory, GL_OES_EGL_image_external_essl3, GL_CHROMIUM_lose_context, GL_EXT_debug_label, GL_EXT_occlusion_query_boolean, GL_OES_texture_npot, GL_OES_texture_half_float, GL_EXT_texture_compression_s3tc_srgb, GL_NV_pixel_buffer_object, GL_OES_compressed_ETC2_sRGB8_texture, GL_EXT_blend_func_extended, GL_EXT_texture_rg, GL_OES_EGL_image, GL_OES_compressed_ETC2_sRGB8_alpha8_texture, GL_ANGLE_explicit_context_gles1, GL_EXT_debug_marker, GL_ANGLE_translated_shader_source, GL_CHROMIUM_bind_uniform_location, GL_EXT_texture_compression_dxt1, GL_EXT_color_buffer_float, GL_ANGLE_explicit_context, GL_ANGLE_get_serialized_context_string, GL_EXT_texture_storage, GL_EXT_discard_framebuffer, GL_OES_depth32, GL_ANGLE_memory_size, GL_ANGLE_texture_compression_dxt3, GL_EXT_disjoint_timer_query, , GL_ANGLE_depth_texture, GL_ANGLE_framebuffer_multisample, GL_OES_packed_depth_stencil, GL_EXT_frag_depth, GL_EXT_unpack_subimage, GL_OES_texture_stencil8, GL_ANGLE_copy_texture_3d, GL_ANGLE_texture_compression_dxt5, GL_CHROMIUM_copy_texture, GL_KHR_debug, GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture, GL_WEBGL_video_texture, GL_EXT_color_buffer_half_float, GL_ANGLE_request_extension, GL_NV_EGL_stream_consumer_external, GL_CHROMIUM_copy_compressed_texture, GL_NV_pack_subimage, GL_ANGLE_get_tex_level_parameter, GL_OES_draw_elements_base_vertex, GL_OES_rgb8_rgba8, GL_OES_compressed_EAC_R11_signed_texture, GL_EXT_shader_texture_lod, GL_OES_element_index_uint, GL_EXT_float_blend, GL_OES_texture_float, GL_ANGLE_texture_multisample, GL_OES_EGL_image_external, GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture, GL_CHROMIUM_bind_generates_resource, GL_OES_compressed_EAC_R11_unsigned_texture, GL_ANGLE_multiview_multisample, GL_EXT_texture_norm16, GL_EXT_texture_compression_rgtc[2022.04.30 11:26:16] EGL Extensions: EGL_EXT_create_context_robustness, EGL_ANGLE_d3d_share_handle_client_buffer, EGL_ANGLE_d3d_texture_client_buffer, EGL_ANGLE_surface_d3d_texture_2d_share_handle, EGL_ANGLE_query_surface_pointer, EGL_ANGLE_window_fixed_size, EGL_ANGLE_keyed_mutex, EGL_ANGLE_surface_orientation, EGL_ANGLE_direct_composition, EGL_ANGLE_windows_ui_composition, EGL_NV_post_sub_buffer, EGL_KHR_create_context, EGL_KHR_image, EGL_KHR_image_base, EGL_KHR_gl_texture_2D_image, EGL_KHR_gl_texture_cubemap_image, EGL_KHR_gl_renderbuffer_image, EGL_KHR_get_all_proc_addresses, EGL_KHR_stream, EGL_KHR_stream_consumer_gltexture, EGL_NV_stream_consumer_gltexture_yuv, EGL_ANGLE_flexible_surface_compatibility, EGL_ANGLE_stream_producer_d3d_texture, EGL_ANGLE_create_context_webgl_compatibility, EGL_CHROMIUM_create_context_bind_generates_resource, EGL_CHROMIUM_sync_control, EGL_EXT_pixel_format_float, EGL_KHR_surfaceless_context, EGL_ANGLE_display_texture_share_group, EGL_ANGLE_display_semaphore_share_group, EGL_ANGLE_create_context_client_arrays, EGL_ANGLE_program_cache_control, EGL_ANGLE_robust_resource_initialization, EGL_ANGLE_create_context_extensions_enabled, EGL_ANDROID_blob_cache, EGL_ANDROID_recordable, EGL_ANGLE_image_d3d11_texture, EGL_ANGLE_create_context_backwards_compatible, EGL_KHR_create_context_no_error, EGL_KHR_reusable_sync, [2022.04.30 11:26:16] OpenGL: QOpenGLContext created, version: 3.3.[2022.04.30 11:26:16] OpenGL: [TRUE] (OverlayWidget)[2022.04.30 11:26:17] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:18] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:18] RPC Error: request 155 got fail with code 400, error USER_NOT_PARTICIPANT[2022.04.30 11:26:18] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:18] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:18] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:18] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:19] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:20] API Warning: not loaded minimal channel applied.[2022.04.30 11:26:49] Skipping message, because it is already in blocks![2022.04.30 11:29:35] Export Info: Panel Hide By Cancel.[2022.04.30 11:29:35] Export Info: Panel Hide Requested.[2022.04.30 11:29:36] Export Info: Panel Closed.[2022.04.30 11:29:36] Export Info: Stop requested.[2022.04.30 11:29:36] Export Info: Destroying.[2022.04.30 11:29:36] Export Info: Destroy top bar by controller removal.[2022.04.30 11:29:36] Export Info: Controller destroyed.[2022.04.30 11:30:41] Message Info: bad message notification received (error_code 33) for msg_id = 7092249591047570128, seq_no = 906[2022.04.30 11:30:41] Message Info: bad message notification received, msgId 7092249591047570128, error_code 33[2022.04.30 11:31:30] Message Info: bad message notification received (error_code 33) for msg_id = 7092249814173790356, seq_no = 12[2022.04.30 11:31:30] Message Info: bad message notification received, msgId 7092249814173790356, error_code 33[2022.04.30 11:31:30] Message Info: bad message notification received (error_code 33) for msg_id = 7092249814173978920, seq_no = 6[2022.04.30 11:31:30] Message Info: bad message notification received, msgId 7092249814173978920, error_code 33[2022.04.30 11:31:30] Message Info: bad message notification received (error_code 33) for msg_id = 7092249814173860796, seq_no = 25[2022.04.30 11:31:30] Message Info: bad message notification received, msgId 7092249814173860796, error_code 33[2022.04.30 11:34:11] RPC Error: Was last altered, in the form hh.mm.ss. alterationDateTime A concatenation of the alterationDate and alterationTime columns showing when the channel definition was last altered, in the form yyyy‑mm‑dd hh.mm.ss. buffersRecv Number of messages buffers received over the channel. buffersSent Number of message buffers sent over the channel. bytesRecv Message data in bytes sent over the channel. bytesSent Message data in bytes received over the channel. instanceType The channel instance type, one of Current, Saved, Short. startDate Date the channel was started, in the form yyyy‑mm‑dd. startTime Time the channel was started, in the form hh.mm.dd. startDateTime A concatenation of the startDate and startTime columns showing when the channel was started, in the form yyyy‑mm‑dd hh.mm.ss. heartbeatInterval The channel heartbeat interval in seconds. currentLuwid Current "logical unit of work" identifier, for an in-doubt batch of messages. currentSeqNo Sequence number of the last message, for an in-doubt batch of messages. lastLuwid The "logical unit of work" identifier for the last committed batch of messages. lastSeqNo The sequence number of the last message in the last committed batch of messages. lastMsgDate Date the last message was sent, in the form yyyy‑mm‑dd. lastMsgTime Time the last message was sent, in the form hh.mm.dd. lastMsgDateTime A concatenation of the lastMsgDate and lastMsgTime columns showing when the last message was sent, in the form yyyy‑mm‑dd hh.mm.ss. mcaName Name of the Message Channel Agent (MCA). mcaUserId The user id used by the MCA. mcaStatus MCA status, either Stopped or Running. mcaJobName Name of the MCA job. messageCount Number of messages sent or received. remoteApp Remote application name for a server-connection channel, or the remote queue manager / group otherwise. retriesLeft Number of short retries left (for reconnections). stopRequested Whether a stop request has been registered for this channel. Values are Yes or No. sslCipherSpec SSL cipher specification

GitHub - wix-incubator/message-channel: message channel

Connected to Sendbird server.Step 6 Create a new open channelCreate an open channel using the following codes. Open channels are where all users in your Sendbird application can easily participate without an invitation.OpenChannel.createChannel(new OpenChannel.OpenChannelCreateHandler() { @Override public void onResult(OpenChannel openChannel, SendBirdException e) { if (e != null) { // Handle error. } // An open channel is successfully created. // Through the openChannel parameter of the onResult() callback method, // you can get the open channel's data from the result object that Sendbird server has passed to the onResult(). }});Note: You can also create a group channel to send a message. To learn more, see Create a channel in the Group channel page.Step 7 Enter the channelEnter the channel to send and receive messages.// The following sample code continues from Step 6.OpenChannel.createChannel(new OpenChannel.OpenChannelCreateHandler() { @Override public void onResult(OpenChannel openChannel, SendBirdException e) { if (e != null) { // Handle error. } // Call the instance method of the result object in the openChannel parameter of the onResult() callback method. openChannel.enter(new OpenChannel.OpenChannelEnterHandler() { @Override public void onResult(SendBirdException e) { if (e != null) { // Handle error. } // The current user successfully enters the open channel, // and can chat with other users in the channel by using APIs. } }); }});Step 8 Send a message to the channelFinally, send a message to the channel. To learn about the message types you can send, refer to Message overview in Chat Platform API.You can check the message you've sent in Sendbird Dashboard. To learn about receiving a message, refer to the receive messages through a channel event handler page.openChannel.sendUserMessage(MESSAGE, new BaseChannel.SendUserMessageHandler() { @Override public void onSent(UserMessage userMessage, SendBirdException e) { if (e != null) { // Handle error. } // The message is successfully sent to the channel. // The current user can receive messages from other users // through the onMessageReceived() method of an event handler. }});. Message Channel Implementations; Channel Interceptors; MessagingTemplate; Configuring Message Channels; Special Channels; Poller; Channel Adapter; Messaging Bridge; Message; Message Channel. A message channel is use to transport the message from one messaging endpoint to another. It integrate the messaging endpoints. Message channel used

Check if Message is in Channel

Not loaded minimal channel applied.[2022.04.30 15:06:09] API Warning: not loaded minimal channel applied.[2022.04.30 15:07:02] RPC Error: request 6217 got fail with code 400, error FILE_REFERENCE_EXPIRED[2022.04.30 15:07:04] RPC Error: request 6228 got fail with code 400, error FILE_REFERENCE_EXPIRED[2022.04.30 15:07:18] API Warning: not loaded minimal channel applied.[2022.04.30 15:07:39] RPC Error: request 6310 got fail with code 400, error FILE_REFERENCE_EXPIRED[2022.04.30 15:08:49] RPC Error: request 6392 got fail with code 400, error PEER_ID_INVALID[2022.04.30 15:08:56] API Warning: not loaded minimal channel applied.[2022.04.30 15:08:56] API Warning: not loaded minimal channel applied.[2022.04.30 15:08:56] API Warning: not loaded minimal channel applied.[2022.04.30 15:09:01] RPC Error: request 6438 got fail with code 400, error PEER_ID_INVALID[2022.04.30 15:09:02] Message Info: bad message notification received (error_code 33) for msg_id = 7092305872131797056, seq_no = 620[2022.04.30 15:09:02] Message Info: bad message notification received (error_code 33) for msg_id = 7092305872322961012, seq_no = 620[2022.04.30 15:09:02] Message Info: bad message notification received (error_code 33) for msg_id = 7092305872321258512, seq_no = 3192[2022.04.30 15:09:02] Message Info: bad message notification received, msgId 7092305872321258512, error_code 33[2022.04.30 15:10:49] Skipping message, because it is already in blocks![2022.04.30 15:10:54] Message Info: bad message notification received (error_code 33) for msg_id = 7092306353628578088, seq_no = 796 Included as query parameters on the webhook URL.The trickiest part of this approach is that you must properly URL encode your payload. Your elegant JSON message becomes seeming nonsense, filled with percent-encoded characters.POST application/x-www-form-urlencodedpayload=%7B%22text%22%3A%22This%20is%20a%20line%20of%20text.%5CnAnd%20this%20is%20another%20one.%22%7DMany HTTP clients provide convenient functions for URL encoding and setting the Content-type.curl example curl -X POST --data-urlencode 'payload={"text":"This is a line of text.\nAnd this is another one."}' the --data-urlencode curl parameter automatically URL encodes the provided string.###Adding linksTo create a link in your text, enclose the URL in angle brackets. For example: payload={"text": ""} will post a clickable link to display hyperlinked text instead of the actual URL, use the pipe character, as shown in this example: for details!"}">{ "text": " for details!"}This will be displayed in the channel as:Customizations for custom integrationsThough it is best to use a single incoming webhook for a specific purpose, in some cases you may want to override the default channel and authoring identity of an incoming webhook. You cannot override the default username, icon, or channel for incoming webhooks attached to Slack apps. Instead, these values will stubbornly inherit from the associated Slack app configuration.####Customizing your username and iconIncoming webhooks originate from a default identity you configured when originally creating your webhook. You can override a custom integration's configured name with the username field in your JSON payload.You can also override the bot icon either with icon_url or icon_emoji.{ "username": "ghost-bot", "icon_emoji": ":ghost:", "text": "BOO!"}An overridden username and icon could look like this:####Channel overrideIncoming webhooks output to a default channel and can only send messages to a single channel at a time. You can override a custom integration's configured channel by specifying the channel field in your JSON payload.Specify a Slack channel by name with "channel": "#other-channel", or send a Slackbot message to a specific user with "channel": "@username".{ "channel": "#other-channel", "text": "This message will appear in #other-channel"}If you prefer, you can also specify a channel ID or user ID like so: "channel": "U024BE7LH".###Advanced message formattingYou can use Slack's standard message markup to add simple formatting to your messages. You can also use message attachments to display richly-formatted message blocks.###Putting it all togetherHere is a sample curl command for posting to a channel using the payload parameter:curl example curl -X POST --data-urlencode 'payload={"text": "This is posted to and comes from *monkey-bot*.", "channel": "#general", "username": "monkey-bot", "icon_emoji": ":monkey_face:"}' here is a version using a Content-type of application/json:curl example curl -X

Send a message to a channel

Sent to a particular channel, you subscribe to it. When you publish a message to a channel, PubNub delivers that message to everyone who is subscribed to that channel. In this example, you subscribe to a channel named example.A message can be any type of JSON-serializable data (such as objects, arrays, integers, strings) that is smaller than 32 KiB. PubNub will, in most cases, deliver your message to its intended recipients in fewer than 100 ms regardless of their location. You can also share files up to 5MB.The sample app creates a subscription, subscribes to the channel, and then calls the publish() method, which sends the "Hello from PubNub Python SDK" message.subscription = pubnub.channel('example').subscription()# add a listenersubscription.on_message = lambda message: print(f'Message from {message.publisher}: {message.message}')subscription.subscribe()time.sleep(1)# publish publish_result = pubnub.publish().channel("example").message("Hello from PubNub Python SDK").sync()You can subscribe to more than one channel with a single subscribe call but in this example, you subscribe to a single channel.For more information, refer to the Publish and Subscribe section of the PubNub Python SDK API documentation, and to Publishing a message.Next steps​You have just learned how to use the Python SDK to send and receive messages using PubNub. Next, take a look at the SDK's reference documentation which covers PubNub API in more detail.

Message channels - developers.superchat.com

Probe! The Access Parameters message on the paging channel announces values of all related parameters 56Example 3Lets Register! 57RegistrationRegistration is the process by which an idle mobile lets the system know its awake and available for incoming calls this allows the system to inform the mobiles home switch of the mobiles current location, so that incoming calls can be delivered registration also allows the system to intelligently page the mobile only in the area where the mobile is currently located, thereby eliminating useless congestion on the paging channels in other areas of the system There are many different conditions that could trigger an obligation for the mobile to register there are flags in the System Parameters Message which tell the mobile when it must register on the current system 58An Actual RegistrationThe System Parameters Message tells all mobiles when they should register. This mobile notices that it is obligated to register, so it transmits a Registration Message.The base station confirms that the mobiles registration message was received. Were officially registered! 59Example 4Lets Receive an incoming Call! 60Receiving an Incoming CallAll idle mobiles monitor the paging channel to receive incoming calls. When an incoming call appears, the paging channel notifies the mobile in a General Page Message. A mobile which has been paged sends a Page Response Message on the access channel. The system sets up a traffic channel for the call, then notifies the mobile to use it with a Channel Assignment Message. The mobile and the base station notice each others traffic channel signals and confirm their presence by exchanging acknowledgment messages. The base station and the mobile negotiate what type of call this will be -- I.e., 13k voice, etc. The mobile is told to ring and given a calling line ID to display. When the human user presses the send button, the audio path is completed and the call proceeds. 61An Actual Page and Page ResponseThe system pages the mobile, 615-330-0644.The mobile responds to the page.The base station confirms that the mobiles page response was received. Now the mobile is waiting for channel assignment, expecting a response within 12 seconds. 62Channel Assignment and Traffic Channel ConfirmationOnly about 400 ms. after the base station acknowledgment order, the mobile receives the channel assignment message.The mobile sees at least two good blank frames in a row on the forward channel, and concludes this is the right traffic channel. It sends. Message Channel Implementations; Channel Interceptors; MessagingTemplate; Configuring Message Channels; Special Channels; Poller; Channel Adapter; Messaging Bridge; Message;

(System Messages Channel) Channel is invalid error :

Is the main body text of the message. It can be formatted as plain text, or with mrkdwn.Restrictions You will only be able to schedule a message up to 120 days into the future. If you specify a post_at timestamp beyond this limit, you’ll receive a time_too_far error response. Additionally, you cannot schedule more than 30 messages to post within a 5-minute window to the same channel. Exceeding this will result in a restricted_too_many error.The response includes the scheduled_message_id assigned to your message. Use it with the chat.deleteScheduledMessage method to delete the message before it is sent.For details on formatting, usage in threads, and rate limiting, check out chat.postMessage documentation.ChannelsYou must specify a public channel, private channel, or DM conversation with the channel argument. Each one behaves slightly differently based on the authenticated user's permissions and additional arguments:Post to a channelYou can either pass the channel's name (#general) or encoded ID (C123ABC456), and the message will be posted to that channel. The channel's ID can be retrieved through the channels.list API method.Post to a DMPass the DM conversation's channel ID (D123ABC456) or a user's user ID (U123ABC456) as the value of channel to post to that DM conversation.The DM conversation's channel ID can be retrieved through the conversations.list API method. Use the types parameters to return only im conversations.You might receive a channel_not_found error if your app doesn't have permission to enter into an IM with the intended user.Common successful responseTypical success response{ "ok": true, "channel": "C123ABC456", "scheduled_message_id": "Q1298393284", "post_at": "1562180400", "message": { "text": "Here's a message for you in the future", "username": "ecto1", "bot_id": "B123ABC456", "attachments": [ { "text": "This is an attachment", "id": 1, "fallback": "This is an attachment's fallback" } ], "type": "delayed_message", "subtype": "bot_message" }}Common error responseTypical error response if the post_at is invalid (ex. in the past or too far into the future){ "ok": false, "error": "time_in_past"} This table lists the expected errors that this method could return. However, other errors can be returned in the case where the service is down or other unexpected factors affect processing. Callers should always check the value of the ok params in the response. ErrorDescriptionchannel_not_foundValue passed for channel was invalid.is_archivedChannel has been archived.invalid_blocksBlocks submitted with this message are not validinvalid_blocks_formatThe blocks is not a valid JSON object or doesn't match the Block Kit syntax.invalid_metadata_formatInvalid metadata format providedinvalid_metadata_schemaInvalid metadata schema providedinvalid_timevalue passed for post_time was invalid.markdown_text_conflictMarkdown text cannot be