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bpo-25514: Improve IDLE's connection refused message (#2177)

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When IDLE fail to start because the socket connection fails, direct people to a new subsection of the IDLE doc listing various causes and remedies.
This commit is contained in:
terryjreedy 2017-06-13 21:32:16 -04:00 • committed by GitHub
parent 8f6eeaf21c
commit 188aedf8bb
4 changed files with 119 additions and 35 deletions
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17
Lib/idlelib/run.py
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@ -180,19 +180,16 @@ def manage_socket(address):
server.handle_request() # A single request only
def show_socket_error(err, address):
"Display socket error from manage_socket."
import tkinter
import tkinter.messagebox as tkMessageBox
from tkinter.messagebox import showerror
root = tkinter.Tk()
root.withdraw()
if err.args[0] == 61: # connection refused
msg = "IDLE's subprocess can't connect to %s:%d. This may be due "\
"to your personal firewall configuration. It is safe to "\
"allow this internal connection because no data is visible on "\
"external ports." % address
tkMessageBox.showerror("IDLE Subprocess Error", msg, parent=root)
else:
tkMessageBox.showerror("IDLE Subprocess Error",
"Socket Error: %s" % err.args[1], parent=root)
msg = f"IDLE's subprocess can't connect to {address[0]}:{address[1]}.\n"\
f"Fatal OSError #{err.errno}: {err.strerror}.\n"\
f"See the 'Startup failure' section of the IDLE doc, online at\n"\
f"https://docs.python.org/3/library/idle.html#startup-failure"
showerror("IDLE Subprocess Error", msg, parent=root)
root.destroy()
def print_exception():