Network Deployment (Distributed operating systems), v8.0 > Set up the application serving environment > Administer application servers > Configure transport chains
Transport chains
Transport chains represent a network protocol stack used for I/O operations within an application server environment.
Transports chains are part of the channel framework function that provides a common networking service for all components, including...
- SIB component of IBM service integration technologies
- WebSphere Secure Caching Proxy
- HA manager core group bridge service
A transport chain consists of one or more types of channels, each of which supports a different type of I/O protocol, such as TCP, DCS. or HTTP. Network ports can be shared among all of the channels within a chain. The channel framework function automatically distributes a request arriving on that port to the correct I/O protocol channel for processing.
Types of channels...
- DCS channel
- Used by the following WAS ND services...
...to transfer data, objects, or events among application servers.
- HTTP inbound channel
- Use HTTP 1.0 and 1.1 standards to communicate with remote servers. Used by other channels, such as the web container channel, to...
- Serve HTTP requests
- Send HTTP specific information to servlets
HTTP inbound channels are used instead of HTTP transports to establish the request queue between a webserver plug-in and an appserver web container.
- HTTP proxy inbound channel
- Handle HTTP requests between a proxy server and application server nodes.
- HTTP Tunnel channel
- Provide client applications with persistent HTTP connections to remote hosts that are either...
- blocked by firewalls
- require an HTTP proxy server, including authentication
- both
Enable the exchange of application data in the body of an HTTP request or response that is sent to or received from a remote server. An HTTP Tunnel channel also enables client-side applications to poll the remote host and to use HTTP requests to either send data from the client or to receive data from an application server. In either case, neither the client nor the application server is aware that HTTP is being used to exchange the data.
- JFAP channel
- Used by the JMS server to create connections to JMS resources on a service integration bus.
- MQ channel
- Used in combination with other channels, such as a TCP channel, within the confines of WebSphere MQ support to facilitate communications between a service integration bus and a WebSphere MQ client or queue manager.
- SIP channel
- Create a bridge in the transport chain between a session initiation protocol (SIP) inbound channel, and a servlet and JavaServer Page engine.
- SIP container inbound channel
- Handle communication between the SIP inbound channel and the SIP servlet container.
- SIP inbound channel
- Handle inbound SIP requests from a remote client.
- SSL channel
- Used to associate an SSL configuration repertoire with the transport chain. This channel is only available when SSL support is enabled for the transport chain. An SSL configuration repertoire is defined in...
Security | SSL configuration repertoires
- TCP channel
- Provide client applications with persistent connections within a LAN when a node uses TCP to retrieve information from a network.
- UDP channel
- Provide client applications with persistent connections within a LAN when a node uses UDP to retrieve information from a network.
- Web container channel
- Create a bridge in the transport chain between an HTTP inbound channel and a servlet and JavaServer Page (JSP) engine.
Custom channels that support requirements unique to a particular customer or environment can also be added to a transport chain. Administer application servers
Configure transport chains