Fix values for host, port for proxy connection

[loelkes]

This pull request includes a small change to the pyVmomi/SoapAdapter.py file. The change modifies the GetConnection method to correctly set the tunnel using the host and port attributes.

The command mitmproxy --showhost was used to setup a proxy. Tested with python3.11 on macOS 15.1.1.

instance = SmartConnect(
    host="myhostname",
    user="myusername",
    pwd="supersecret",
    disableSslCertValidation=True,
    httpProxyHost="127.0.0.1",
    httpProxyPort=8080,
)

Leads to

pyVmomi.VmomiSupport.vim.fault.HostConnectFault: (vim.fault.HostConnectFault) {
   dynamicType = <unset>,
   dynamicProperty = (vmodl.DynamicProperty) [],
   msg = 'Tunnel connection failed: 502 Bad Gateway',
   faultCause = <unset>,
   faultMessage = (vmodl.LocalizableMessage) []
}

The issue is rooted at:

pyvmomi/pyVmomi/SoapAdapter.py

Lines 1541 to 1542 in 9a8956f

	host = getattr(self, 'httpProxyHost', self.host.rsplit(":", 1)[0])
	port = getattr(self, 'httpProxyPort', self.port)

pyvmomi/pyVmomi/SoapAdapter.py

Lines 1549 to 1555 in 9a8956f

	conn = self.scheme(host=host, port=port, **self.schemeArgs)
	if self.is_tunnel:
	if hasattr(self, 'sslProxyPath'):
	conn.setVcTunnel(self.sslProxyPath)
	elif hasattr(self, 'httpProxyHost'):
	customHeaders = self._customHeaders if self._customHeaders else {}
	conn.set_tunnel(host, port, customHeaders)

Python documentation states

HTTPConnection.set_tunnel(host, port=None, headers=None)
Set the host and the port for HTTP Connect Tunnelling. This allows running the connection through a proxy server.

The host and port arguments specify the endpoint of the tunneled connection (i.e. the address included in the CONNECT request, not the address of the proxy server).

Line 1555 sets the the proxy host and port from line 1541 and 1542 as endpoint, which leads to the Tunnel connection failed: 502 Bad Gateway error. This should be self.host (formatted) and self.port

[vmwclabot]

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[loelkes]

Fixes bug introduced in 9a8956f

Related #1095 #1085