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answers:

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Hi

Trying to stream video to windows media player from a servlet (progressive download style). The streaming works, but I have some weird behavior, which I would like to rule out is not caused by a problem in my implementation.

When using WMP to open an url from the servlet, WMP will perform a total of 4 http-get requests for the same resource, but with slightly different headers each time. The connection for the first 3 requests seems to be closed as soon as the request (including headers) have been sent. The fourth request remains connected, and I can actually deliver response headers and the file content.

Have tried using wireshark to watch the first three requests. Identical starts of responses are sent for all 4 requests, and the first 3 requests managed to send the response headers, and some part of the file content before being closed. (Don't know if its relevant, but have to enable "Support packet-capture from IP TSO-enabled hardware" for wireshark to correctly parse the stream, otherwise the first packet containing the http-response is seen as malformed.)

The 4 request headers below here:

GET /basic/test.mpg HTTP/1.1
Accept: */*
User-Agent: Windows-Media-Player/12.0.7600.16415
Accept-Encoding: gzip, deflate
Host: 192.168.1.34
Connection: Keep-Alive

GET /basic/test.mpg HTTP/1.1
Cache-Control: no-cache
Connection: Keep-Alive
Pragma: getIfoFileURI.dlna.org
Accept: */*
User-Agent: NSPlayer/12.00.7600.16385 WMFSDK/12.00.7600.16385
GetContentFeatures.DLNA.ORG: 1
Host: 192.168.1.34

GET /basic/test.mpg HTTP/1.1
Accept: */*
User-Agent: NSPlayer/12.00.7600.16385 WMFSDK/12.00.7600.16385
Icy-Metadata: 1
Accept-Encoding: gzip, deflate
Host: 192.168.1.34
Connection: Keep-Alive

GET /basic/test.mpg HTTP/1.1
Cache-Control: no-cache
Connection: Keep-Alive
Pragma: getIfoFileURI.dlna.org
Accept: */*
User-Agent: NSPlayer/12.00.7600.16385 WMFSDK/12.00.7600.16385
GetContentFeatures.DLNA.ORG: 1
Host: 192.168.1.34

Response headers:

HTTP/1.1 200 OK
Content-Type: video/mpeg
Content-Length: 130549760
ETag: TEST1286565215430
ContentFeatures.DLNA.ORG: DLNA.ORG_PN=MPEG_PS_PAL;DLNA.ORG_OP=00
Server: Jetty(6.1.x)