月度归档： 2016 年 4 月

Aixs2: disable chunked encoding

It seems that iCheque doesn’t support chunked transfer in their new version of payment API, but chunked transfer is enabled in AXIS2 by default, so you will get

org.apache.axis2.AxisFault: Transport error: 411 Error: Length Required

When chunked transfer is enabled, the Content-Length will not be present in the HTTP header of request. Because by using chunked transfer, the sender can dynamically generate the content, and send it, the sender doesn’t need to know the length of the content. Another HTTP header, Transfer-Encoding: chunked, will be put in.

If the receiver doesn’t support chunked transfer, you have to disable it.

In AXIS2, you can disable it like this

serviceStub._getServiceClient().getOptions().setProperty(org.apache.axis2.transport.http.HTTPConstants.CHUNKED, Boolean.FALSE)

Process state codes in ps

The meaning of values of column STAT in output of ps command on Linux.

PROCESS STATE CODES
       Here are the different values that the s, stat and state output specifiers (header "STAT" or "S") will display to describe the state of a process:
       D    uninterruptible sleep (usually IO)
       R    running or runnable (on run queue)
       S    interruptible sleep (waiting for an event to complete)
       T    stopped, either by a job control signal or because it is being traced.
       W    paging (not valid since the 2.6.xx kernel)
       X    dead (should never be seen)
       Z    defunct ("zombie") process, terminated but not reaped by its parent.
 
       For BSD formats and when the stat keyword is used, additional characters may be displayed:
       < high-priority (not nice to other users)
       N    low-priority (nice to other users)
       L    has pages locked into memory (for real-time and custom IO)
       s    is a session leader
       l    is multi-threaded (using CLONE_THREAD, like NPTL pthreads do
       +    is in the foreground process group.