Supporting sending requests through an HTTP proxy (PokemonGoF#2358)

* Added proxy support

Added proxy support from config.json and command line. with parameters:

-prxip | --proxy_ip  or proxy_ip from config.json for ipv4 format as string "aaa.bbb.ccc.ddd"

-prxp| --proxy_port or proxy_por from config.json as int from 1 to 65536.

* Added proxy support

Added two additional parameters (proxy_ip and proxy_port) to add support for proxy.

proxy_ip must be as string of ipv4 format: "aaa.bbb.ccc.ddd" , proxy_port must be a int from 1 to 65536, if proxy_ip is null or set to "" and proxy port is null or set to 0 proxy will be ignored and not used.

* Moved proxy function to a method.

Moved proxy function to a method.

* Changed the name of method

Changed from set_proxy_if_exists to setup_proxy

configs/config.json.example

@@ -4,6 +4,8 @@
     "password": "YOUR_PASSWORD",
     "location": "SOME_LOCATION",
     "gmapkey": "GOOGLE_MAPS_API_KEY",
+    "proxy_ip": "" ,
+    "proxy_port": 0,
     "tasks": [
       {
         "type": "HandleSoftBan"

pokecli.py

@@ -322,14 +322,36 @@ def init_config():
         type=float,
         default=5.0
     )
+    add_config(
+        parser,
+        load,
+        short_flag="-prxip",
+        long_flag="--proxy_ip",
+        help="Proxy (https and http)",
+        required=required("proxy_ip"),
+        type=str,
+        default=None
+    )
+    add_config(
+        parser,
+        load,
+        short_flag="-prxp",
+        long_flag="--proxy_port",
+        help="Proxy port",
+        required=required("proxy_port"),
+        type=int,
+        default=None
+    )
 
     # Start to parse other attrs
     config = parser.parse_args()
     if not config.username and 'username' not in load:
         config.username = raw_input("Username: ")
     if not config.password and 'password' not in load:
         config.password = getpass("Password: ")
-
+
+    setup_proxy(config)
+
     config.catch = load.get('catch', {})
     config.release = load.get('release', {})
     config.action_wait_max = load.get('action_wait_max', 4)
@@ -401,6 +423,12 @@ def task_configuration_error(flag_name):
     fix_nested_config(config)
     return config
 
+def setup_proxy(config):
+    if config.proxy_ip and len(config.proxy_ip)>0 and config.proxy_ip.count('.') == 3 and  all(0<=int(num)<256 for num in config.proxy_ip.rstrip().split('.')):
+        if config.proxy_port and int(config.proxy_port )<65536 and  int(config.proxy_port )>1:
+            os.environ['http_proxy']="http://"+config.proxy_ip+":"+str(config.proxy_port)+"/"
+            os.environ['https_proxy']="http://"+config.proxy_ip+":"+str(config.proxy_port)+"/"
+
 def add_config(parser, json_config, short_flag=None, long_flag=None, **kwargs):
     if not long_flag:
         raise Exception('add_config calls requires long_flag parameter!')