Hi, in my module I am inspecting the request body and making certain decisions such as sending a 403 based on the content in the body. I based my implementation based on the examples in the documentation and other nginx modules.
http://nginx.org/en/docs/dev/development_guide.html#http_request_body_filters Sometimes, when my body_filter handler is invoked, I accumulate the body into a single buffer for processing in my module. To do this, I have to first get the length of the body. To get the length, I cycle through the body buffer chain. I also look for the last_buf to be set for the last buffer in the chain. The presence of the last_buf tells me that I have the complete body. However, sometimes I've noticed that the last_buf flag is not set (I log such requests), in which case I cannot process the body. Under what conditions would the flag be not set when the body_filter handler is invoked? Does the body filter handler get invoked multiple times or only once? Is my assumption that the last_buf flag will always be set when the body-filter handler is invoked correct? Any help is appreciated. regards, Dk
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