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From: Neel Patel <neel.patel@enterprisedb.com>
Date: Wed, 24 May 2017 13:52:07 +0530
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Subject: Re: [pgAdmin4][runtime][patch]: RM#2398 - Proxy not
 bypassed for embedded server in runtime on Windows
To: Dave Page <dpage@pgadmin.org>, dp.maxime@gmail.com
Cc: pgadmin-hackers <pgadmin-hackers@postgresql.org>
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Hi,

After debugging the issue in windows, we came to know that "random port"
generation logic in runtime is getting failed if we configured proxy server
in windows.

Below are the code where we are finding random free port and use with our
URL "localhost:<port>". Below code return "0" as port value so application
is not able to start and it hangs on splash screen. Here, if we configured
proxy server in windows then "bind" method always return false and gives
message "Operation not permitted" but when we disable proxy server then
below code gives valid random port number.

QTcpSocket socket;
socket.bind(0, QTcpSocket::ShareAddress);
port = socket.localPort();

Same happens with Linux OS - when user defined "http_proxy" environment
variable and run pgAdmin4 application then above code fails and gives "0"
as random port number and application hangs on splash screen.