8351e6a013
JIRA: https://jira.spring.io/browse/INT-3501 There were several problems: When a `Folder` is open, an activity on the `Store` opens a new connection. The `PingTask` called `isConnected()` on the store, creating a new connection. The pings (NOOPs) were performed on this connection and therefore did NOT cancel the `IDLE`. In any case, the `IDLE` was issued on the folder not the store and the only way to cancel that IDLE is to cause its `waitIfIdle()` to be invoked. Conveniently, simply calling `isOpen()` invokes that method and cancels the IDLE. Finally, the `SimpleMessageCountListener` unnecessarily invoked `message.getLineCount()` when a simple `folder.isOpen()` is sufficient. Fixes: 1. Do not invoke `openSession` if `this.folder` is not null. 2. Change the `PingTask` to simply invoke `isOpen()`. 3. Move the `PingTask to the receiver for a more efficient algorithm instead of running on fixed interval. Rename it `IdleCanceler`. 4. Increase the PING timer from 10 to 120 seconds; add setters for it and the `reconnectionDelay`. TODO: Namespace support for 4.1. (Not to be back ported). Add a test IMAP server (ported from Java DSL and enhanced to simulate IDLE with a new message arriving for the first idle period. INT-3501 Polishing - PR Comments Polishing for `PoorMansMailServer` to get rid of `smtp` and `pop3` servers to avoid unnecessary Base64 dependency
Spring Integration 
Checking out and Building
To check out the project and build from source, do the following:
git clone git://github.com/spring-projects/spring-integration.git
cd spring-integration
./gradlew build
If you encounter out of memory errors during the build, increase available heap and permgen for Gradle:
GRADLE_OPTS='-XX:MaxPermSize=1024m -Xmx1024m'
To build and install jars into your local Maven cache:
./gradlew install
To build api Javadoc (results will be in build/api):
./gradlew api
To build reference documentation (results will be in build/reference):
./gradlew reference
To build complete distribution including -dist, -docs, and -schema zip files (results will be in build/distributions)
./gradlew dist
Using Eclipse
To generate Eclipse metadata (.classpath and .project files), do the following:
./gradlew eclipse
Once complete, you may then import the projects into Eclipse as usual:
File -> Import -> Existing projects into workspace
Browse to the 'spring-integration' root directory. All projects should import free of errors.
Using IntelliJ IDEA
To generate IDEA metadata (.iml and .ipr files), do the following:
./gradlew idea
Resources
For more information, please visit the Spring Integration website at: http://projects.spring.io/spring-integration