Hi folks, We're trying to get Forest working on a local machine, and

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Out of interest <a class="user-mention notranslate" data-hovercard-type="

QVM and Quilc don't work behind network proxies about qvm HOT 2 CLOSED

quil-lang commented on May 25, 2024 2

QVM and Quilc don't work behind network proxies

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notmgsk commented on May 25, 2024

Thanks @jclapis for the report. I'll get this fixed in the upcoming release.

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jclapis commented on May 25, 2024

Out of interest @jclapis do you see the same behaviour if you do echo H 0 | qvm?

Yeah, as far as I can tell the timeout happens for everything except qvm --help. I just tried this and can confirm it also runs into the same problem:

c:\Program Files\Rigetti Computing\Forest SDK for Windows>echo H 0 | qvm
! ! ! Condition raised: Condition USOCKET:TIMEOUT-ERROR was signalled.
<131>1 2019-05-10T20:40:10Z (hostname) qvm - - - Error encountered, quitting.

Once I run my pretend update server, it works:

c:\Program Files\Rigetti Computing\Forest SDK for Windows>echo H 0 | qvm
******************************
* Welcome to the Rigetti QVM *
******************************
Copyright (c) 2016-2019 Rigetti Computing.

This is a part of the Forest SDK. By using this program
you agree to the End User License Agreement (EULA) supplied
with this program. If you did not receive the EULA, please
contact <[email protected]>.

(Configured with 10240 MiB of workspace and 1 worker.)

<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Selected simulation method: pure-state
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Reading program.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Allocating memory for QVM of 1 qubits.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Allocation completed in 7 ms.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Loading quantum program.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Executing quantum program.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Execution completed in 7 ms.
<135>1 2019-05-10T20:42:53Z (hostname) qvm - - - Printing classical memory and 1-qubit state.
Classical memory (low -> high indexes):
    No memory.
Amplitudes:
    |0>: 0.7071067811865475,                                    P= 50.0%
    |1>: 0.7071067811865475,                                    P= 50.0%

For reference, here's the code for the pretend update server I wrote: https://github.com/jclapis/qsfe/blob/master/Forest/RigettiUpdateProxy/Program.cs

It just listens on 127.0.0.1:80 for GET requests to /qcs-sdk/version/, and returns the version JSON. QVM and Quilc work fine once that's running.

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