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						SBDMain.initWithApplicationId(appId)
SBDMain.connectWithUserId(userId, completionHandler: {
  (user:SBDUser?, err:SBDError?) in
  SBDMain.addChannelDelegate(self, identifier:handlerId)

  // get channel
  SBDGroupChannel.getChannelWithUrl(channelUrl, completionHandler: {
    (channel:SBDGroupChannel?, err:SBDError?) in
    // send message
    channel?.sendUserMessage(message, completionHandler: {
      (message:SBDUserMessage?, err:SBDError?) in
      // message sent
    })
  })
})

override func channel(sender: SBDBaseChannel,
  didReceiveMessage message: SBDBaseMessage) {
  // message received
}
						
						
							Sendbird.init(appId, context);
Sendbird.addChannelHandler(handlerId, new Sendbird.ChannelHandler() {
  @Override
  public void onMessageReceived(BaseChannel baseChannel, BaseMessage baseMessage) {
    // message received
  }
});
Sendbird.connect(userId, new ConnectHandler() {
  @Override
  public void onConnected(User user, SendbirdException e) {
    // get channel
    GroupChannel.getChannel(channelUrl, new GroupChannel.GroupChannelGetHandler() {
      @Override
      public void onResult(GroupChannel groupChannel, SendbirdException e) {
        // send message
        groupChannel.sendUserMessage(message,
          new BaseChannel.SendUserMessageHandler() {
            @Override
            public void onSent(UserMessage userMessage, SendbirdException e) {
              // message sent
            }
        });
      }
    });
  }
});
							
						
							const sb = new Sendbird({ appId : 'YOUR-APP-ID' });
const channelHandler = new sb.ChannelHandler();
channelHandler.onMessageReceived = (channel, message) => {
    // message received
};
sb.addChannelHandler(handlerId, channelHandler);
sb.connect(userId, (user, err) => {
    // get channel
    sb.GroupChannel.getChannel(channelUrl, (channel, err) => {
      // send message
      channel.sendUserMessage(message, (message, err) => {
          // message sent
      });
    });
});
							
						
							SendbirdClient.Init(appId);
const SendbirdClient.ChannelHandler channelHandler = new SendbirdClient.ChannelHandler();
channelHandler.OnMessageReceived = (BaseChannel baseChannel, BaseMessage baseMessage) => {
  // message received
};
SendbirdClient.AddChannelHandler(handlerId, channelHandler);
SendbirdClient.Connect(userId, (User user, SendbirdException connectException) => {
  // get channel
  GroupChannel.GetChannel(channelUrl,
    (GroupChannel groupChannel, SendbirdException getChannelException) => {
      // send message
      groupChannel.SendUserMessage(message,
        (UserMessage userMessage, SendbirdException sendMessageException) => {
          // message sent
        });
  });
});

							
						
							SendbirdClient.Init(appId);
const SendbirdClient.ChannelHandler channelHandler = new SendbirdClient.ChannelHandler();
channelHandler.OnMessageReceived = (BaseChannel baseChannel, BaseMessage baseMessage) => {
  // message received
};
SendbirdClient.AddChannelHandler(handlerId, channelHandler);
SendbirdClient.Connect(userId, (User user, SendbirdException connectException) => {
  // get channel
  GroupChannel.GetChannel(channelUrl,
    (GroupChannel groupChannel, SendbirdException getChannelException) => {
      // send message
      groupChannel.SendUserMessage(message,
        (UserMessage userMessage, SendbirdException sendMessageException) => {
          // message sent
        });
  });
});

							
						
							import requests

# Send a message
response = requests.request(
    method='POST', 
    url=f'https://api-{YOUR_APP_ID}.sendbird.com/v3/group_channels/{channel_url}/messages',
    headers={
        'Api-Token': API_TOKEN,
    }, 
    json={
        'message_type': 'MESG',
        'user_id': 'user-1',
        'message': 'Hello Sendbird!',
    },
)