Unable to send Reply back to Rpi from Host

[vasu15]

Hi, I was unable to send a response back to Rpi using ImageHub send_reply.

[jeffbass]

The Mac (image receiving computer) always sends a response. My test programs don't show how to capture the Mac's response in the RPi sending program. To capture the response, you add a variable to receive the return value of the "sender.send_image()" function:

rpi_name = socket.gethostname()  # send RPi hostname with each image
picam = VideoStream(usePiCamera=True).start()
time.sleep(2.0)  # allow camera sensor to warm up
while True:  # send images as stream until Ctrl-C
    image = picam.read()
    reply_from_mac = sender.send_image(rpi_name, image)   # captures the reply
    do_something_with_reply(reply_from_mac)

Above code snippet is from "test2_rpi_send_images.py" in the tests folder. Adding reply capture to the other test programs would be similar. I think your question is a good one. I will add something to the documentation to discuss this. Please let me know if above answers your question so I can close the issue. Thanks! Jeff

[vasu15]

Thank You

On Tue, 25 Feb 2020 at 23:38, Jeff Bass notifications@github.com wrote:

The Mac (image receiving computer) always sends a response. My test programs don't show how to capture the Mac's response in the RPi sending program. To capture the response, you add a variable to receive the return value of the "sender.send_image()" function:

rpi_name = socket.gethostname() # send RPi hostname with each image picam = VideoStream(usePiCamera=True).start() time.sleep(2.0) # allow camera sensor to warm upwhile True: # send images as stream until Ctrl-C image = picam.read() reply_from_mac = sender.send_image(rpi_name, image) # captures the reply do_something_with_reply(reply_from_mac)

Above code snippet is from "test2_rpi_send_images.py" in the tests folder. Adding reply capture to the other test programs would be similar. I think your question is a good one. I will add something to the documentation to discuss this. Please let me know if above answers your question so I can close the issue. Thanks! Jeff

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[jeffbass]

I have updated the 2 programs timing_send_images.py and timing_send_jpg_buf.py to provide another example of how this is done. Let me know if you have any other questions.