add proxy support [#16]

Author: dnl-blkv

bunq/sdk/client.py

@@ -19,6 +19,9 @@ class ApiClient(object):
     :type _api_context: context.ApiContext
     """
 
+    # HTTPS type of proxy, the only used at bunq
+    _FIELD_PROXY_HTTPS = 'https'
+
     # Header constants
     HEADER_ATTACHMENT_DESCRIPTION = 'X-Bunq-Attachment-Description'
     HEADER_CONTENT_TYPE = 'Content-Type'
@@ -98,7 +101,8 @@ def _request(self, method, uri_relative, request_bytes, custom_headers):
             method,
             self._get_uri_full(uri_relative),
             data=request_bytes,
-            headers=all_headers
+            headers=all_headers,
+            proxies={self._FIELD_PROXY_HTTPS: self._api_context.proxy_url}
         )
 
         self._assert_response_success(response)

bunq/sdk/context.py

@@ -41,6 +41,7 @@ class ApiContext(object):
     :type _api_key: str
     :type _session_context: SessionContext
     :type _installation_context: InstallationContext
+    :type _proxy_url: str|None
     """
 
     # File mode for saving and restoring the context
@@ -57,21 +58,22 @@ class ApiContext(object):
     _PATH_API_CONTEXT_DEFAULT = 'bunq.conf'
 
     def __init__(self, environment_type, api_key, device_description,
-                 permitted_ips=None):
+                 permitted_ips=None, proxy_url=None):
         """
         :type environment_type: ApiEnvironmentType
         :type api_key: str
         :type device_description: str
         :type permitted_ips: list[str]|None
+        :type proxy_url: str|None
         """
 
-        if permitted_ips is None:
-            permitted_ips = []
+        permitted_ips = permitted_ips or []
 
         self._environment_type = environment_type
         self._api_key = api_key
         self._installation_context = None
         self._session_context = None
+        self._proxy_url = proxy_url
         self._initialize(device_description, permitted_ips)
 
     def _initialize(self, device_description, permitted_ips):
@@ -254,6 +256,14 @@ def session_context(self):
 
         return self._session_context
 
+    @property
+    def proxy_url(self):
+        """
+        :rtype: str
+        """
+
+        return self._proxy_url
+
     def save(self, path=None):
         """
         :type path: str

requirements.txt

@@ -1,6 +1,6 @@
 aenum==2.0.8
 chardet==3.0.4
 pycryptodomex==3.4.6
-requests==2.18.1
+requests[socks]==2.18.1
 simplejson==3.11.1
 urllib3==1.21.1