feat: global proxy protocol support

test/test_proxy_protocol/test_proxy-protocol-global-enabled.py

@@ -0,0 +1,31 @@
+import socket
+
+
+def test_proxy_protocol_global_enabled_normal_request_fails(docker_compose, nginxproxy):
+    try:
+        r = nginxproxy.get(
+            "http://proxy-protocol-global-enabled.nginx-proxy.tld/headers"
+        )
+        assert False
+    except Exception as e:
+        assert "Remote end closed connection without response" in str(e)
+
+
+def test_proxy_protocol_global_enabled_proto_request_works(docker_compose, nginxproxy):
+    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    client.connect((nginxproxy.get_ip(), 80))
+
+    # 1.2.3.4 is the client IP
+    # 4.3.2.1 is the proxy server IP
+    # 8080 is the client port
+    # 9090 is the proxy server port
+    client.send(f"PROXY TCP4 1.2.3.4 4.3.2.1 8080 9090\r\n".encode("utf-8"))
+    client.send(
+        "GET /headers HTTP/1.1\r\nHost: proxy-protocol-global-enabled.nginx-proxy.tld\r\n\r\n".encode(
+            "utf-8"
+        )
+    )
+
+    response = client.recv(4096).decode("utf-8")
+    assert "X-Forwarded-For: 1.2.3.4" in response
+    assert "X-Forwarded-Port: 9090" in response