Core inbound-channel-adapter does not expose "send-timeout" attribute and SourcePollingChannelAdapterFactoryBean missing "sendTimeout" property.
Resolved for 1.0.5 as well. See the commit log here (accidentally committed with other change via -am flag):
Need to add the proper support in 1.0.5 (send-timeout on top-level element).
INT-1772 is a separate issue for adding the attribute to the top-level.