MultipleHttpServers

= Multiple HTTP Servers =
Implementing multiple HTTP servers as described in !CherryPy Essentials is no longer supported (see ticket #752, not there anymore?).  I have been able to develop an alternative method that replaces it.

This method uses a configuration file, so you will have to rework it if you want the configuration data to be hard-coded.

Here is an example of the `httpservers.ini` configuration file:
{{{
#httpservers.ini
[HTTP_Addresses]
Host_1:192.168.0.10
Port_1:8080
# localhost in any case will be changed to 127.0.0.1
Host_2:LOCALHOST
Port_2:8008
# IPv6 may not be valid on old systems
Host_3:[::1]
# If blank or nonexistent will default to 80
Port_3:
}}}
Note that this is a standard format `ini` file, not the !CherryPy version that requires values that are Python datatypes.

This file goes in the same folder as the sample page below.

Here is the source code for a sample page:
{{{
#!python
import ConfigParser
import cherrypy
from cherrypy import _cpserver
from cherrypy import _cpwsgi_server

class Home:

    def index(self):
        return 'Hello World from multiple HTTP addresses'

    index.exposed=True

oConf=ConfigParser.ConfigParser()
oConf.read('httpservers.ini')
i=0;bFirst=True;lXSvrs=[];sSect='HTTP_Addresses'
while True:
    i+=1
    sOptHost='Host_%i'%i
    sOptPort='Port_%i'%i
    if oConf.has_option(sSect,sOptHost):
        sHost=oConf.get(sSect,sOptHost)
        if len(sHost)>0:
            if sHost.lower()=='localhost':
                sHost='127.0.0.1'
            try:
                iPort=oConf.getint(sSect,sOptPort)
            except:
                iPort=80
            if bFirst:
                bFirst=False
                cherrypy.config.update({
                    #'environment':'production',
                    'server.socket_host':sHost,
                    'server.socket_port':iPort,
                    'log.access_file':'access.log',
                    'log.error_file':'error.log',
                    'log.screen':True
                })
            else:
                lXSvrs.append(_cpwsgi_server.CPWSGIServer())
                lXSvrs[-1].bind_addr=(sHost,iPort)
                lXSvrs.append(_cpserver.ServerAdapter(cherrypy.engine,lXSvrs[-1],(sHost,iPort)))
                lXSvrs[-1].subscribe()
    else:
        break
try:
    del oConf,i,bFirst,sSect,sOptHost,sOptPort,sHost,iPort
except:
    raise RuntimeError,'ABORT: httpservers.ini file is invalid.'

cherrypy.tree.mount(Home(),'/',config={
    '/':{
        'tools.response_headers.on':True,
        'tools.response_headers.headers':[
            ('Content-Type','text/plain')
        ]
    }
})
cherrypy.engine.start()
cherrypy.engine.block()
}}}
----


Here's that same code stripped down to the bare essentials, showing the addition of an SSL port:

{{{
#!python
import cherrypy
from cherrypy import _cpserver
from cherrypy import _cpwsgi_server

secure_server = _cpwsgi_server.CPWSGIServer()
secure_server.bind_addr = ('0.0.0.0', 443)
secure_server.ssl_certificate = '/etc/myapp/server.pem'
secure_server.ssl_private_key = '/etc/myapp/server.pem'
adapter = _cpserver.ServerAdapter(cherrypy.engine, secure_server, secure_server.bind_addr)
adapter.subscribe()

cherrypy.config.update({
    'server.socket_host': '0.0.0.0',
    'server.socket_port': 80,
})

cherrypy.engine.start()
cherrypy.engine.block()
}}}

''--fumanchu''