Add support for --ciphers (#870)

httpie/ssl.py

@@ -0,0 +1,38 @@
+import ssl
+
+from requests.adapters import HTTPAdapter
+# noinspection PyPackageRequirements
+from urllib3.util.ssl_ import DEFAULT_CIPHERS, create_urllib3_context
+
+
+DEFAULT_SSL_CIPHERS = DEFAULT_CIPHERS
+SSL_VERSION_ARG_MAPPING = {
+    'ssl2.3': 'PROTOCOL_SSLv23',
+    'ssl3': 'PROTOCOL_SSLv3',
+    'tls1': 'PROTOCOL_TLSv1',
+    'tls1.1': 'PROTOCOL_TLSv1_1',
+    'tls1.2': 'PROTOCOL_TLSv1_2',
+    'tls1.3': 'PROTOCOL_TLSv1_3',
+}
+AVAILABLE_SSL_VERSION_ARG_MAPPING = {
+    arg: getattr(ssl, constant_name)
+    for arg, constant_name in SSL_VERSION_ARG_MAPPING.items()
+    if hasattr(ssl, constant_name)
+}
+
+
+class HTTPieHTTPSAdapter(HTTPAdapter):
+    def __init__(self, ssl_version: str = None, ciphers: str = None, **kwargs):
+        self._ssl_context: ssl.SSLContext = create_urllib3_context(
+            ciphers=ciphers,
+            ssl_version=ssl_version
+        )
+        super().__init__(**kwargs)
+
+    def init_poolmanager(self, *args, **kwargs):
+        kwargs['ssl_context'] = self._ssl_context
+        return super().init_poolmanager(*args, **kwargs)
+
+    def proxy_manager_for(self, *args, **kwargs):
+        kwargs['ssl_context'] = self._ssl_context
+        return super().proxy_manager_for(*args, **kwargs)