sdk: send toDevice messages to deviceId='*'

So since #2579, we are sending messages only to specific
deviceId='RAIDEN', but the commit which made raiden-py log in with that
deviceId came only after their v1.2.0 release. We've checked with the
matrix team, and the target deviceIds for toDevice messages are checked
at request time, so it should be safe to send to `*` instead, which will
reach all connected clients and make it compatible with PC 1.2+

raiden-ts/src/transport/epics/messages.ts

@@ -32,7 +32,7 @@ import {
 import type { RaidenAction } from '../../actions';
 import type { RaidenConfig } from '../../config';
 import { intervalFromConfig } from '../../config';
-import { Capabilities, RAIDEN_DEVICE_ID } from '../../constants';
+import { Capabilities } from '../../constants';
 import { messageReceived, messageSend, messageServiceSend } from '../../messages/actions';
 import type { Delivered, Message } from '../../messages/types';
 import { MessageType, Processed, SecretRequest, SecretReveal } from '../../messages/types';
@@ -113,7 +113,7 @@ function flushQueueToDevice(
     // several messages can be batched in a single body, as long as they share same msgtype
     const body = peerQueue.map((action) => getMessageBody(action.payload.message)).join('\n');
     const content = { msgtype: getMsgType(peerQueue[0]), body };
-    payload[peerId] = { [RAIDEN_DEVICE_ID]: content };
+    payload[peerId] = { ['*']: content };
   }
 
   let retries = -1;

raiden-ts/tests/unit/epics/transport.spec.ts

@@ -7,7 +7,7 @@ import type { MatrixClient } from 'matrix-js-sdk';
 import { first, pluck } from 'rxjs/operators';
 
 import { raidenConfigUpdate, raidenShutdown } from '@/actions';
-import { Capabilities, RAIDEN_DEVICE_ID } from '@/constants';
+import { Capabilities } from '@/constants';
 import { messageReceived, messageSend, messageServiceSend } from '@/messages/actions';
 import type { Delivered, Processed } from '@/messages/types';
 import { MessageType } from '@/messages/types';
@@ -647,7 +647,7 @@ describe('matrixMessageSendEpic', () => {
     expect(matrix.sendToDevice).toHaveBeenCalledWith(
       'm.room.message',
       expect.objectContaining({
-        [partnerMatrix.getUserId()!]: { [RAIDEN_DEVICE_ID]: { body: message, msgtype: 'm.text' } },
+        [partnerMatrix.getUserId()!]: { ['*']: { body: message, msgtype: 'm.text' } },
       }),
     );
   });
@@ -685,7 +685,7 @@ describe('matrixMessageSendEpic', () => {
     expect(matrix.sendToDevice).toHaveBeenCalledTimes(2);
     expect(matrix.sendToDevice).toHaveBeenCalledWith('m.room.message', {
       [partnerMatrix.getUserId()!]: {
-        [RAIDEN_DEVICE_ID]: { body: expect.stringMatching('"Processed"'), msgtype: 'm.text' },
+        ['*']: { body: expect.stringMatching('"Processed"'), msgtype: 'm.text' },
       },
     });
   });
@@ -732,16 +732,16 @@ describe('matrixMessageSendEpic', () => {
     // first message got sent immediately
     expect(mockedSendToDevice).toHaveBeenNthCalledWith(1, 'm.room.message', {
       [p1Matrix.getUserId()!]: {
-        [RAIDEN_DEVICE_ID]: { body: messages[0], msgtype: 'm.text' },
+        ['*']: { body: messages[0], msgtype: 'm.text' },
       },
     });
     // second message to first recipient, plus batched messages to 2nd recipient, in a single call
     expect(mockedSendToDevice).toHaveBeenNthCalledWith(2, 'm.room.message', {
       [p1Matrix.getUserId()!]: {
-        [RAIDEN_DEVICE_ID]: { body: messages[1], msgtype: 'm.text' },
+        ['*']: { body: messages[1], msgtype: 'm.text' },
       },
       [p2Matrix.getUserId()!]: {
-        [RAIDEN_DEVICE_ID]: { body: messages.slice(2).join('\n'), msgtype: 'm.text' },
+        ['*']: { body: messages.slice(2).join('\n'), msgtype: 'm.text' },
       },
     });
   });