Inbound HTTP request chunking is used to eliminate the restriction
on messages greater than 10MB. The 10MB restriction is set because the entire
message is buffered in the controller before the HTTP request is dispatched
to the servant, therefore, the controller may fail with an out of memory condition
when multiple large HTTP messages are processed simultaneously. With chunking
enabled, the message is broken up into smaller pieces before it is processed
by the Web container and application. As a result, only one small chunk is
buffered in memory at a time in the controller thus greatly reducing the amount
of memory consumed by large HTTP messages. Applications do not require changes
to enable inbound HTTP chunking.
About this task
Inbound HTTP request chunking, is configured at the Web container
transport chain level. You can configure each Web container chain to enable
or disable chunking. When chunking is enabled for a particular chain, you
can also configure the maximum chunk size for chunking enabled for each chain.
All
HTTP Web container chains have chunking enabled by default.
Procedure
- In the administrative console click .
- Select a transport chain.
- Under Transport Channels select Web container inbound
channel ( channel_name ).
- Under Additional Properties select Custom properties to
configure inbound HTTP request message chunking. See the article, Web container transport chain custom properties for details about request message
chunking settings.
- If the disableRequestMessageChunking property is already
defined, select the disableRequestMessageChunking property from the
list.
- If the disableRequestMessageChunking property is not
defined, click new.
- On the settings page, do one of the following:
- To enable request message chunking, enter the property, disableRequestMessageChunking in
the Name field and the enter the value, false, in the Value field.
Click Apply or OK so save the custom property changes.
- To disable request message chunking, enter the property, disableRequestMessageChunking in
the Name field and the enter the value, true, in the Value field.
Click Apply or OK so save the custom property changes.
- Configure message chunk size if request message chunking is enabled.
See the article, Web container transport chain custom properties for
details on these settings.
- On the Custom Properties page, click New.
- On the settings page, enter the property, maxRequestMessageBodySize,
in the Name field and the enter a size, specified in kilobytes, between 32
and 8192 in the Value field.
- Click Apply or OK.
- Click Save on the console task bar to save your configuration
changes.
- Restart the server.