diff --git a/package.json b/package.json
index a79810b..a620085 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "braid",
-  "version": "1.2",
+  "version": "1.2.0",
   "description": "",
   "main": "index.js",
   "scripts": {
diff --git a/src/channelManager.ts b/src/channelManager.ts
index d1d6a08..890689b 100644
--- a/src/channelManager.ts
+++ b/src/channelManager.ts
@@ -1,7 +1,9 @@
-import ChannelBase from './channels/channelBase';
-import ClientBase from './clients/clientBase';
-import PrivateClient from './clients/types/privateClient';
+import PublicChannel from './channels/types/publicChannel';
 import PrivateChannel from './channels/types/privateChannel';
+import CustomChannel from './channels/types/customChannel';
+import PublicClient from './clients/types/publicClient';
+import PrivateClient from './clients/types/privateClient';
+import CustomClient from './clients/types/customClient';
 
 var logger = require('./logger');
 
@@ -10,13 +12,13 @@ class ChannelManager {
 
   constructor() {
     // create default channel...
-    var channel: ChannelBase = new ChannelBase('default');
+    var channel: PublicChannel = new PublicChannel('default');
     this.channels.push(channel);
   }
 
   createChannel(data: any) {
-    var channelExists: ChannelBase|PrivateChannel|null = this.channelExists(data.channel);
-    var channel: ChannelBase|PrivateChannel;
+    var channelExists: PublicChannel|PrivateChannel|CustomChannel|null = this.channelExists(data.channel);
+    var channel: PublicChannel|PrivateChannel|CustomChannel;
 
     if (channelExists) {
       channel = channelExists;
@@ -40,8 +42,8 @@ class ChannelManager {
     return null;
   }
 
-  addClientToChannel(client: ClientBase|PrivateClient, channel_id: string) {
-    var channel: ChannelBase|PrivateChannel|null = this.channelExists(channel_id);
+  addClientToChannel(client: PublicClient|PrivateClient|CustomClient, channel_id: string) {
+    var channel: PrivateChannel|PrivateChannel|CustomChannel|null = this.channelExists(channel_id);
 
     if (channel) {
       channel.addClient(client);
@@ -63,7 +65,7 @@ class ChannelManager {
     } catch (e) {
       logger.errorLog.info(e);
       logger.accessLog.info(`creating base channel: ${data.channel}`);
-      return new ChannelBase(data.channel);
+      return new PublicChannel(data.channel);
     }
   }
 
@@ -83,7 +85,7 @@ class ChannelManager {
     return false;
   }
 
-  changeChannel(client: ClientBase|PrivateClient, changeRequest: any) {
+  changeChannel(client: PublicClient|PrivateClient|CustomClient, changeRequest: any) {
     if (client.channel != null) {
       this.removeClientFromChannel(client.id, client.channel.id)
     }
diff --git a/src/channels/channelBase.ts b/src/channels/channelBase.ts
index 68a2a7d..908d9f6 100644
--- a/src/channels/channelBase.ts
+++ b/src/channels/channelBase.ts
@@ -1,21 +1,44 @@
-import ClientBase from '../clients/clientBase';
+import PublicClient from '../clients/types/publicClient';
 import PrivateClient from '../clients/types/privateClient';
+import CustomClient from '../clients/types/customClient';
+import * as Joi from 'joi';
 
 var logger = require('../logger');
 
 class ChannelBase {
   id: string;
-  clients: PrivateClient[]|ClientBase[] = [];
+  clients: PrivateClient[]|PublicClient[]|CustomClient[] = [];
 
   constructor(id: string) {
     this.id = id;
     logger.accessLog.info('Channel Created', {channelId: id});
   }
 
-  addClient(client: PrivateClient|ClientBase) {
+  validations() {
+    return {}
+  }
+
+  broadcastMessage(from: PublicClient|PrivateClient|CustomClient, message: object) {
+    for (let to of this.clients) {
+      if (this.messageTransactionPossible(from, to)) {
+        to.ws.send(JSON.stringify(message));
+        logger.accessLog.info(`sent to ${to.id}`, { data: { message: message }});
+      } else {
+        logger.accessLog.info(`client is unable to send: ${to.id}`, { data: { message: message }});
+      }
+    }
+
+    return {'status': 'success', 'message': `message broadcast complete`};
+  }
+
+  messageTransactionPossible(_from: PublicClient|PrivateClient|CustomClient, _to: PublicClient|PrivateClient|CustomClient) {
+    return true
+  }
+
+  addClient(client: PublicClient|PrivateClient|CustomClient) {
     if (this.clientExists(client.id)) {
       logger.errorLog.info('Client already exits in channel', {channelId: this.id, clientId: client.id});
-      return {'status': 'notice', 'message': 'client aleady exists in channel'};
+      return {'status': 'notice', 'message': 'client already exists in channel'};
     } else {
       this.clients.push(client);
       logger.accessLog.info('Added client to channel', {channelId: this.id, clientId: client.id});
@@ -44,19 +67,6 @@ class ChannelBase {
 
     return false;
   }
-
-  broadcastMessage(from: ClientBase|null, message: string) {
-    for (let client of this.clients) {
-      if (client != from) {
-        client.ws.send(JSON.stringify(message));
-        logger.accessLog.info(`sent to ${client.id}`, { data: { message: message }});
-      } else {
-        logger.accessLog.info(`client is same as sender: ${client.id}`, { data: { message: message }});
-      }
-    }
-
-    return {'status': 'success', 'message': `message broadcast complete`};
-  }
 };
 
 export default ChannelBase;
diff --git a/src/channels/types/customChannel.ts b/src/channels/types/customChannel.ts
index e69de29..b4a6fbb 100644
--- a/src/channels/types/customChannel.ts
+++ b/src/channels/types/customChannel.ts
@@ -0,0 +1,18 @@
+import CustomClient from '../../clients/types/customClient';
+import ChannelBase from '../channelBase';
+import * as Joi from 'joi';
+
+class CustomChannel extends ChannelBase {
+  validations() {
+    return {
+      test: Joi.alternatives().try(Joi.string(), Joi.object())
+    }
+  }
+
+  messageTransactionPossible(from: CustomClient, to: CustomClient) {
+    return true
+  }
+};
+
+module.exports = CustomChannel;
+export default CustomChannel;
diff --git a/src/channels/types/privateChannel.ts b/src/channels/types/privateChannel.ts
index 0215b24..c668b7a 100644
--- a/src/channels/types/privateChannel.ts
+++ b/src/channels/types/privateChannel.ts
@@ -4,18 +4,12 @@ import ChannelBase from '../channelBase';
 var logger = require('../../logger');
 
 class PrivateChannel extends ChannelBase {
-  broadcastMessage(from: PrivateClient, message: any) {
-    for (let client of this.clients) {
-      if (client != from && client.roles.includes('receiver') && from.roles.includes('broadcaster')) {
-        console.log('sending message: ' + JSON.stringify(message))
-        client.ws.send(JSON.stringify(message));
-        logger.accessLog.info(`sent to ${client.id}`, { data: { message: message }});
-      } else {
-        logger.accessLog.info(`client is either just a broadcaster or is the sender: ${client.id}`, { data: { message: message }});
-      }
-    }
-
-    return {'status': 'success', 'message': `message broadcast complete`};
+  messageTransactionPossible(from: PrivateClient, to: PrivateClient) {
+    return (
+      to != from &&
+      to.roles.includes('receiver') &&
+      from.roles.includes('broadcaster')
+    )
   }
 };
 
diff --git a/src/channels/types/publicChannel.ts b/src/channels/types/publicChannel.ts
index e69de29..abdc902 100644
--- a/src/channels/types/publicChannel.ts
+++ b/src/channels/types/publicChannel.ts
@@ -0,0 +1,15 @@
+import PublicClient from '../../clients/types/publicClient';
+import ChannelBase from '../channelBase';
+
+var logger = require('../../logger');
+
+class PublicChannel extends ChannelBase {
+  messageTransactionPossible(from: PublicClient, to: PublicClient) {
+    return (
+      to != from
+    )
+  }
+};
+
+module.exports = PublicChannel;
+export default PublicChannel;
diff --git a/src/clientManager.ts b/src/clientManager.ts
index 7910d66..be5ce06 100644
--- a/src/clientManager.ts
+++ b/src/clientManager.ts
@@ -1,12 +1,13 @@
 import * as WebSocket from 'ws';
-import ClientBase from './clients/clientBase';
+import PublicClient from './clients/types/publicClient';
 import PrivateClient from './clients/types/privateClient';
+import CustomClient from './clients/types/customClient';
 import ChannelManager from './channelManager';
 
 var logger = require('./logger');
 
 class ClientManager {
-  clients: ClientBase[]|PrivateClient[] = [];
+  clients: PublicClient[]|PrivateClient[]|CustomClient[] = [];
 
   constructor() {
     //...maybe one day
@@ -26,7 +27,7 @@ class ClientManager {
   }
 
   clientsOfType(client_type: string) {
-    var result: ClientBase[]|PrivateClient[] = [];
+    var result: PublicClient[]|PrivateClient[]|CustomClient[] = [];
 
     for (let client of this.clients) {
       if (client.type() == client_type) {
@@ -76,7 +77,7 @@ class ClientManager {
     } catch (e) {
       logger.errorLog.info(e);
       logger.accessLog.info(`creating base client: ${data.user_id}`);
-      return new ClientBase(data, ws, channelManager, this);
+      return new PublicClient(data, ws, channelManager, this);
     }
   }
 };
diff --git a/src/clients/clientBase.ts b/src/clients/clientBase.ts
index e0e1ad5..966c5fe 100644
--- a/src/clients/clientBase.ts
+++ b/src/clients/clientBase.ts
@@ -1,8 +1,9 @@
 import * as WebSocket from 'ws';
 import ClientManager from '../clientManager';
 import ChannelManager from '../channelManager';
-import ChannelBase from '../channels/channelBase';
-import Private from '../channels/types/privateChannel';
+import PublicChannel from '../channels/types/publicChannel';
+import PrivateChannel from '../channels/types/privateChannel';
+import CustomChannel from '../channels/types/customChannel';
 
 var messageManager = require('../messageManager');
 var logger = require('../logger');
@@ -11,7 +12,7 @@ class ClientBase {
   ws: WebSocket;
   data: any;
   id: number;
-  channel: ChannelBase|Private|null;
+  channel: PublicChannel|PrivateChannel|CustomChannel|null;
   clientManager: ClientManager;
   channelManager: ChannelManager;
   roles: Array<string>;
@@ -26,6 +27,10 @@ class ClientBase {
     this.roles = ['receiver']
   }
 
+  validations() {
+    return {}
+  }
+
   getData() {
     return this.data;
   }
@@ -38,12 +43,12 @@ class ClientBase {
     return this.data.client;
   }
 
-  connectToChannel(channel: Private) {
+  connectToChannel(channel: PublicChannel|PrivateChannel|CustomChannel) {
     this.channel = channel;
 
     var messageListener = (message: any) => {
       logger.accessLog.info(`starting message transaction on channel ${channel.id}: `, {message: message});
-      message = messageManager.prepareMessage(message);
+      message = messageManager.prepareMessage(message, channel, this);
 
       if (!message.error) {
         if (message['message_type'] == 'broadcast') {
diff --git a/src/clients/types/customClient.ts b/src/clients/types/customClient.ts
index e69de29..19b938b 100644
--- a/src/clients/types/customClient.ts
+++ b/src/clients/types/customClient.ts
@@ -0,0 +1,17 @@
+import ClientBase from '../clientBase';
+import * as Joi from 'joi';
+
+class CustomClient extends ClientBase {
+  // validations() {
+  //   return {
+  //     test: Joi.alternatives().try(Joi.string(), Joi.object())
+  //   }
+  // }
+  validations() {
+    return { what: "test"}
+  }
+};
+
+module.exports = CustomClient;
+export default CustomClient;
+
diff --git a/src/clients/types/privateClient.ts b/src/clients/types/privateClient.ts
index 78d43fe..a5fec6c 100644
--- a/src/clients/types/privateClient.ts
+++ b/src/clients/types/privateClient.ts
@@ -6,7 +6,6 @@ import ChannelManager from '../../channelManager';
 var logger = require('../../logger');
 
 class PrivateClient extends ClientBase {
-
   constructor(data: any, ws: WebSocket, channelManager: ChannelManager, clientManager: ClientManager) {
     super(data, ws, channelManager, clientManager);
     this.roles = data.user_roles
diff --git a/src/clients/types/publicClient.ts b/src/clients/types/publicClient.ts
index e69de29..a97e585 100644
--- a/src/clients/types/publicClient.ts
+++ b/src/clients/types/publicClient.ts
@@ -0,0 +1,9 @@
+import ClientBase from '../clientBase';
+
+var logger = require('../../logger');
+
+class PublicClient extends ClientBase {};
+
+module.exports = PublicClient;
+export default PublicClient;
+
diff --git a/src/messageManager.ts b/src/messageManager.ts
index 906c7d6..294b356 100644
--- a/src/messageManager.ts
+++ b/src/messageManager.ts
@@ -1,21 +1,31 @@
 import * as Joi from 'joi';
+import PublicChannel from './channels/types/publicChannel';
+import PrivateChannel from './channels/types/privateChannel';
+import CustomChannel from './channels/types/customChannel';
+import PublicClient from './clients/types/publicClient';
+import PrivateClient from './clients/types/privateClient';
+import CustomClient from './clients/types/customClient';
 
 var logger = require('./logger');
 var app = require('./config/app');
 
-let schema = {
-  message_type: Joi.string().valid(app.messageTypes).insensitive().required(),
-  channel: Joi.string(),
-  channel_type: Joi.string(),
-  client_type: Joi.string(),
-  user_id: Joi.number().integer(),
-  message: Joi.alternatives().try(Joi.string(), Joi.object()),
+let schema = (channel: PublicChannel|PrivateChannel|CustomChannel, client: PublicClient|PrivateClient|CustomClient) => {
+  let validations = { 
+    message_type: Joi.string().valid(app.messageTypes).insensitive().required(),
+    channel: Joi.string(),
+    channel_type: Joi.string(),
+    client_type: Joi.string(),
+    user_id: Joi.number().integer(),
+    message: Joi.alternatives().try(Joi.string(), Joi.object())
+  }
+
+  return {...validations, ...channel.validations, ...client.validations}
 };
 
 module.exports = {
-  prepareMessage: (message: string) => {
+  prepareMessage: (message: string, channel: PublicChannel|PrivateChannel|CustomChannel, client: PublicClient|PrivateClient|CustomClient) => {
     var parsed = JSON.parse(message)
-    const result = Joi.validate(parsed, schema);
+    const result = Joi.validate(parsed, schema(channel, client));
 
     if (result.error) {
       return result
diff --git a/src/test/channelBase.spec.ts b/src/test/channelBase.spec.ts
index 806fa30..a302093 100644
--- a/src/test/channelBase.spec.ts
+++ b/src/test/channelBase.spec.ts
@@ -14,7 +14,7 @@ var wsClient = new WebSocketClient();
 var channel: ChannelBase;
 var clientManager = new ClientManager();
 var channelManager = new ChannelManager();
-var data: any = { 'client': 'test', 'client_type':'site', 'user_id': 125, 'user_type': 'user', 'channel': name }
+var data: any = { 'channel_type': 'private', 'client_type':'private', 'user_id': 125, 'user_roles': ['broadcaster', 'receiver'], 'channel': name }
 var client: ClientBase = new ClientBase(data, wsClient, channelManager, clientManager);
 
 describe('ChannelBase', function () {
diff --git a/src/test/clientManager.spec.ts b/src/test/clientManager.spec.ts
index 6afd07d..4e8a418 100644
--- a/src/test/clientManager.spec.ts
+++ b/src/test/clientManager.spec.ts
@@ -8,7 +8,7 @@ var assert = require('chai').assert;
 var sinon = require('sinon');
 
 var name: string = 'test channel';
-var data: any = { 'client': 'test', 'client_type':'site', 'user_id': 125, 'user_type': 'user', 'channel': name }
+var data: any = { 'channel_type': 'private', 'client_type':'private', 'user_id': 125, 'user_roles': ['broadcaster', 'receiver'], 'channel': name }
 var WebSocketClient = require('websocket').client;
 var wsClient = new WebSocketClient();
 var clientManager = new ClientManager();
@@ -23,7 +23,7 @@ describe('ClientManager', function () {
   });
 
   it('should get clients of type', function () {
-    var result = clientManager.clientsOfType('site');
+    var result = clientManager.clientsOfType('private');
     assert(result.length > 0, 'returns one client');
   });
 
@@ -52,7 +52,7 @@ describe('ClientManager', function () {
   });
 
   it('should add client of type PrivateClient', function () {
-    var data: any = { 'channel_type': 'private', 'client_type':'private', 'user_id': 125, 'user_roles': '["broadcaster", "receiver"]', 'channel': name }
+    var data: any = { 'channel_type': 'private', 'client_type': 'private', 'user_id': 125, 'user_roles': ['broadcaster', 'receiver'], 'channel': name }
     var result = clientManager.getClientType(data, channelManager, wsClient);
     expect(result.clientType()).to.be.equal('private');
   });