regarding multiple base address wcf

Question

User88744855 posted

here i am attaching one config entries because i have couple of question for config

entries...please have a look

<service name="WCFService.Service" behaviorConfiguration="behaviorConfig">

<host>
  <baseAddresses>
    <add baseAddress="net.tcp://localhost:1645/ChatServer/"/>
    <add baseAddress="http://localhost:1648/ChatServer/"/>
  </baseAddresses>
  </host>
  <endpoint address="tcp"
                  binding="netTcpBinding"
                  bindingConfiguration="tcpBinding"
                  contract="ChatService.IChat"/>

 <endpoint address="net.tcp://localhost:1645/ChatServer/mex"
                  binding="mexTcpBinding"
                  contract="IMetadataExchange"/>

 </service>

a) tell me why two base address is given. the person who wrote this config entries why he

write two base address....any idea??

b) just see the tcp endpoint why the person construct the tcp endoint this way rather he
could write tcp endpoint like this way

<endpoint address="net.tcp://localhost:1645/ChatServer/"
                  binding="netTcpBinding"
                  contract="ChatService.IChat" />

c) why he wrote the tcp url in mex endpoint rather he could write mex endpoint like
<endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange" />

but he did not write in this way....is there any special reason.