Sockets/Threads/ThreadingTCPServer and other NASTY things...

[gbgbgb at gmx.de]

Hi!
I am writing an Applicationserver for CGI-Scripts using
ThreadingTCPServer.
I my BaseHTTPRequestHandler I am handling the call in do_GET/do_POST.
My problem is that the response I am writing sometimes gets crippled,
about every five times. (Crippled meens that the data is truncated or
even no response is getting back)

My send-routine looks like this:

    def dah_writeResponse(self, header, data):

	data_len = len(data)
	
	start_time = time.time()

	self.wfile.write("%s %s %s\r\n" % (self.protocol_version, "200", ""))
	self.wfile.write("%s: %s\r\n" % ("Content-Length", str(data_len)))
	self.wfile.write("%s: %s\r\n" % ("Date", self.date_time_string()))
	self.wfile.write("%s: %s\r\n" % ("Server", Server_ID))
	self.wfile.write("%s: %s\r\n" % ("Connection", "Close"))
	self.wfile.write(header + "\r\n\r\n")

	self.wfile.write(data)
	self.wfile.flush()

	slice = 0
	l = len(data)
	print "(" + str(l) + " bytes response written in " + str(time.time()
- start_time) + ")"
	sys.stdout.flush()

	time.sleep(1)

Without the time.sleep(1) call it does not work at all. The most funny
thing is, that under Internetexplorer it works worse than with
Netscape.

Is there maybe some "mystical" HTTP-HEADER needed? "keep-alive"? Is
the flushing bad? What else could be the problem? Has it something to
do with the Threads?

Has anybody an idea? 
This is driving me mad!!

yours in hope
Gunter