修复图片

proxy/proxy_client.py

@@ -98,9 +98,14 @@ def modify_request_headers(request_data):
 
 def handle_request(request_data):
     """Handle a single request from device B - completely independent thread"""
-    request_id = extract_request_id(request_data)
+    if isinstance(request_data, bytes):
+        request_data_str = request_data.decode('utf-8', errors='replace')
+    else:
+        request_data_str = request_data
     
-    modified_data, method, path = modify_request_headers(request_data)
+    request_id = extract_request_id(request_data_str)
+    
+    modified_data, method, path = modify_request_headers(request_data_str)
     
     body_size = 0
     if "\r\n\r\n" in modified_data:
@@ -115,40 +120,50 @@ def handle_request(request_data):
         target_sock.connect((TARGET_HOST, TARGET_PORT))
         log_info("System", "Connected to target: %s:%d" % (TARGET_HOST, TARGET_PORT))
         
+        if isinstance(modified_data, str):
+            modified_data = modified_data.encode('utf-8')
         target_sock.sendall(modified_data)
         
-        response = ""
+        response = b""
+        content_length = 0
+        is_chunked = False
+        
         while True:
             chunk = target_sock.recv(8192)
             if not chunk:
                 break
             response += chunk
             
-            if "\r\n\r\n" in response:
-                headers_end = response.find("\r\n\r\n")
-                headers = response[:headers_end]
+            if b"\r\n\r\n" in response and content_length == 0 and not is_chunked:
+                headers_end = response.find(b"\r\n\r\n")
+                headers = response[:headers_end].decode('utf-8', errors='replace')
                 
-                content_length = 0
                 for line in headers.split("\r\n"):
                     if line.lower().startswith("content-length:"):
                         content_length = int(line.split(":", 1)[1].strip())
-                        break
+                    elif line.lower().startswith("transfer-encoding:"):
+                        if "chunked" in line.lower():
+                            is_chunked = True
                 
-                body_start = headers_end + 4
-                if len(response) - body_start >= content_length:
-                    break
+                if content_length > 0:
+                    body_start = headers_end + 4
+                    if len(response) - body_start >= content_length:
+                        break
+                elif is_chunked:
+                    if response.endswith(b"0\r\n\r\n"):
+                        break
         
         if request_id:
-            if "\r\n\r\n" in response:
-                headers_end = response.find("\r\n\r\n")
-                status_line = response[:headers_end].split("\r\n")[0]
-                rest = response[headers_end:]
-                response = status_line + "\r\nX-Proxy-Request-ID: " + request_id + rest
+            if b"\r\n\r\n" in response:
+                headers_end = response.find(b"\r\n\r\n")
+                headers = response[:headers_end]
+                body = response[headers_end:]
+                response = headers + ("\r\nX-Proxy-Request-ID: " + request_id).encode('utf-8') + body
         
         status_code = "500"
-        if "\r\n\r\n" in response:
-            headers_end = response.find("\r\n\r\n")
-            headers = response[:headers_end]
+        if b"\r\n\r\n" in response:
+            headers_end = response.find(b"\r\n\r\n")
+            headers = response[:headers_end].decode('utf-8', errors='replace')
             for line in headers.split("\r\n"):
                 if line.startswith("HTTP/"):
                     status_code = line.split()[1]
@@ -161,19 +176,19 @@ def handle_request(request_data):
     except socket.error as e:
         if e.errno == 111 or e.errno == 10061:
             log_error("System", "Cannot connect to target: %s:%d" % (TARGET_HOST, TARGET_PORT))
-            error_response = "HTTP/1.1 502 Bad Gateway\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nCannot connect to target: %s:%d\r\n" % (TARGET_HOST, TARGET_PORT)
+            error_response = ("HTTP/1.1 502 Bad Gateway\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nCannot connect to target: %s:%d\r\n" % (TARGET_HOST, TARGET_PORT)).encode('utf-8')
             return error_response
         else:
             log_error("System", "Socket error: %s" % str(e))
-            error_response = "HTTP/1.1 502 Bad Gateway\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nSocket error\r\n"
+            error_response = ("HTTP/1.1 502 Bad Gateway\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nSocket error\r\n").encode('utf-8')
             return error_response
     except socket.timeout:
         log_error("System", "Target connection timeout")
-        error_response = "HTTP/1.1 504 Gateway Timeout\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nConnection timeout\r\n"
+        error_response = ("HTTP/1.1 504 Gateway Timeout\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nConnection timeout\r\n").encode('utf-8')
         return error_response
     except Exception as e:
         log_error("System", "Error handling request: %s" % str(e))
-        error_response = "HTTP/1.1 500 Internal Server Error\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nInternal error\r\n"
+        error_response = ("HTTP/1.1 500 Internal Server Error\r\nX-Proxy-Request-ID: " + (request_id if request_id else "") + "\r\nContent-Type: text/plain\r\n\r\nInternal error\r\n").encode('utf-8')
         return error_response
     finally:
         target_sock.close()
@@ -184,7 +199,9 @@ def process_request(b_socket, request_data):
     
     with socket_write_lock:
         try:
+            log_info("System", "Sending response back to B, length: %d bytes" % len(response))
             b_socket.sendall(response)
+            log_info("System", "Response sent successfully")
         except Exception as e:
             log_error("System", "Failed to send response: %s" % str(e))
 
@@ -194,16 +211,16 @@ def listen_for_requests(sock):
     
     while True:
         try:
-            data = ""
+            data = b""
             while True:
                 chunk = sock.recv(8192)
                 if not chunk:
                     log_info("System", "Connection closed by device B")
                     return
                 data += chunk
-                if "\r\n\r\n" in data:
-                    headers_end = data.find("\r\n\r\n")
-                    headers = data[:headers_end]
+                if b"\r\n\r\n" in data:
+                    headers_end = data.find(b"\r\n\r\n")
+                    headers = data[:headers_end].decode('utf-8', errors='replace')
                     
                     content_length = 0
                     for line in headers.split("\r\n"):
@@ -220,8 +237,8 @@ def listen_for_requests(sock):
             t.start()
             
         except socket.timeout:
-            log_info("System", "Connection idle timeout")
-            return
+            log_info("System", "Connection idle timeout, continuing to wait")
+            continue
         except Exception as e:
             log_error("System", "Connection error: %s" % str(e))
             return
@@ -239,14 +256,14 @@ def connect_to_b_device(b_host, b_port):
             response = sock.recv(1024)
             log_info("System", "Received from B: %r" % response)
             
-            if not response or "PROXY_CONNECTED" not in response:
+            if not response or b"PROXY_CONNECTED" not in response:
                 log_error("System", "Failed to receive connection confirmation")
                 sock.close()
                 time.sleep(3)
                 continue
             
             log_info("System", "Sending READY to device B")
-            sock.sendall("READY\r\n")
+            sock.sendall(b"READY\r\n")
             log_info("System", "Successfully connected to device B: %s:%d" % (b_host, b_port))
             
             listen_for_requests(sock)

proxy/proxy_server.py

@@ -60,7 +60,7 @@ def handle_a_device(conn, addr):
     
     with a_device_lock:
         if a_device_conn:
-            conn.send("ERROR: Another A device is already connected\r\n")
+            conn.send(b"ERROR: Another A device is already connected\r\n")
             conn.close()
             log_info("DeviceA", "Rejected connection from %s:%d" % addr)
             return
@@ -68,7 +68,7 @@ def handle_a_device(conn, addr):
         a_device_conn = conn
     
     log_info("DeviceA", "Sending PROXY_CONNECTED to %s:%d" % addr)
-    conn.send("PROXY_CONNECTED\r\n")
+    conn.send(b"PROXY_CONNECTED\r\n")
     
     try:
         conn.settimeout(30)
@@ -76,7 +76,7 @@ def handle_a_device(conn, addr):
         response = conn.recv(1024)
         log_info("DeviceA", "Received from %s:%d: %r" % (addr[0], addr[1], response))
         
-        if response and "READY" in response:
+        if response and b"READY" in response:
             a_device_connected.set()
             log_info("DeviceA", "Connected: %s:%d" % addr)
         else:
@@ -120,10 +120,17 @@ def process_response_from_a():
                 
                 sock = a_device_conn
             
-            response = ""
+            response = b""
+            content_length = 0
+            is_chunked = False
+            request_id = None
+            headers_found = False
+            
             while True:
                 chunk = sock.recv(8192)
                 if not chunk:
+                    if response:
+                        break
                     log_info("System", "Device A connection closed in response processor")
                     with a_device_lock:
                         a_device_conn = None
@@ -131,25 +138,39 @@ def process_response_from_a():
                     return
                 response += chunk
                 
-                if "\r\n\r\n" in response:
-                    headers_end = response.find("\r\n\r\n")
-                    headers = response[:headers_end]
+                if b"\r\n\r\n" in response and not headers_found:
+                    headers_end = response.find(b"\r\n\r\n")
+                    headers = response[:headers_end].decode('utf-8', errors='replace')
+                    headers_found = True
                     
-                    request_id = None
                     for line in headers.split("\r\n"):
                         if line.lower().startswith("x-proxy-request-id:"):
                             request_id = line.split(":", 1)[1].strip()
-                            break
-                    
-                    content_length = 0
-                    for line in headers.split("\r\n"):
-                        if line.lower().startswith("content-length:"):
+                        elif line.lower().startswith("content-length:"):
                             content_length = int(line.split(":", 1)[1].strip())
-                            break
+                        elif line.lower().startswith("transfer-encoding:"):
+                            if "chunked" in line.lower():
+                                is_chunked = True
                     
-                    body_start = headers_end + 4
-                    if len(response) - body_start >= content_length:
+                    if content_length == 0 and not is_chunked:
                         break
+                    
+                    if content_length > 0:
+                        body_start = headers_end + 4
+                        if len(response) - body_start >= content_length:
+                            break
+                    elif is_chunked:
+                        if response.endswith(b"0\r\n\r\n"):
+                            break
+                elif headers_found:
+                    if content_length > 0:
+                        headers_end = response.find(b"\r\n\r\n")
+                        body_start = headers_end + 4
+                        if len(response) - body_start >= content_length:
+                            break
+                    elif is_chunked:
+                        if response.endswith(b"0\r\n\r\n"):
+                            break
             
             if request_id:
                 with request_queue_lock:
@@ -172,13 +193,15 @@ def handle_browser_request(browser_conn, browser_addr):
     try:
         browser_conn.settimeout(30)
         
-        data = ""
+        data = b""
         while True:
             chunk = browser_conn.recv(8192)
+            if not chunk:
+                break
             data += chunk
-            if "\r\n\r\n" in data:
-                headers_end = data.find("\r\n\r\n")
-                headers = data[:headers_end]
+            if b"\r\n\r\n" in data:
+                headers_end = data.find(b"\r\n\r\n")
+                headers = data[:headers_end].decode('utf-8', errors='replace')
                 
                 content_length = 0
                 for line in headers.split("\r\n"):
@@ -189,13 +212,11 @@ def handle_browser_request(browser_conn, browser_addr):
                 body_start = headers_end + 4
                 if len(data) - body_start >= content_length:
                     break
-                elif chunk == "":
-                    break
         
         if not data:
             return
         
-        request_lines = data.split("\r\n")
+        request_lines = data.decode('utf-8', errors='replace').split("\r\n")
         if request_lines:
             first_line = request_lines[0]
             parts = first_line.split()
@@ -203,14 +224,14 @@ def handle_browser_request(browser_conn, browser_addr):
                 method = parts[0]
                 path = parts[1]
                 
-                body_size = len(data) - data.find("\r\n\r\n") - 4 if "\r\n\r\n" in data else 0
+                body_size = len(data) - data.find(b"\r\n\r\n") - 4 if b"\r\n\r\n" in data else 0
         
         request_id = get_request_id()
         log_info("Browser", "Request: %s %s - Body: %d bytes - ID: %s" % (method, path, body_size, request_id))
         
         with a_device_lock:
             if not a_device_conn:
-                error_response = "HTTP/1.1 503 Service Unavailable\r\nContent-Type: text/plain\r\n\r\nDevice A not connected\r\n"
+                error_response = b"HTTP/1.1 503 Service Unavailable\r\nContent-Type: text/plain\r\n\r\nDevice A not connected\r\n"
                 browser_conn.sendall(error_response)
                 log_error("Browser", "Device A not connected for request %s" % request_id)
                 return
@@ -221,7 +242,11 @@ def handle_browser_request(browser_conn, browser_addr):
                 'timestamp': time.time()
             }
         
-        modified_data = "X-Proxy-Request-ID: " + request_id + "\r\n" + data
+        if isinstance(data, bytes):
+            modified_data = ("X-Proxy-Request-ID: " + request_id + "\r\n").encode('utf-8') + data
+        else:
+            modified_data = "X-Proxy-Request-ID: " + request_id + "\r\n" + data
+            modified_data = modified_data.encode('utf-8')
         
         with a_device_lock:
             try:
@@ -232,7 +257,7 @@ def handle_browser_request(browser_conn, browser_addr):
                 with request_queue_lock:
                     if request_id in request_queue:
                         del request_queue[request_id]
-                error_response = "HTTP/1.1 502 Bad Gateway\r\nContent-Type: text/plain\r\n\r\nFailed to forward request to Device A\r\n"
+                error_response = b"HTTP/1.1 502 Bad Gateway\r\nContent-Type: text/plain\r\n\r\nFailed to forward request to Device A\r\n"
                 browser_conn.sendall(error_response)
                 return
         
@@ -251,6 +276,8 @@ def handle_browser_request(browser_conn, browser_addr):
             time.sleep(0.1)
         
         if response:
+            if isinstance(response, str):
+                response = response.encode('utf-8')
             browser_conn.sendall(response)
             log_info("Browser", "Response sent for request %s" % request_id)
         else:
@@ -258,12 +285,12 @@ def handle_browser_request(browser_conn, browser_addr):
                 if request_id in request_queue:
                     del request_queue[request_id]
             log_error("Browser", "Response timeout for request %s" % request_id)
-            error_response = "HTTP/1.1 504 Gateway Timeout\r\nContent-Type: text/plain\r\n\r\nResponse timeout\r\n"
+            error_response = b"HTTP/1.1 504 Gateway Timeout\r\nContent-Type: text/plain\r\n\r\nResponse timeout\r\n"
             browser_conn.sendall(error_response)
         
     except socket.timeout:
         log_error("Browser", "Request timeout from %s:%d" % browser_addr)
-        error_response = "HTTP/1.1 504 Gateway Timeout\r\nContent-Type: text/plain\r\n\r\nRequest timeout\r\n"
+        error_response = b"HTTP/1.1 504 Gateway Timeout\r\nContent-Type: text/plain\r\n\r\nRequest timeout\r\n"
         browser_conn.sendall(error_response)
     except Exception as e:
         log_error("Browser", "Error handling request: %s" % str(e))

proxy/test_server.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+import socket
+import threading
+
+def handle_client(conn, addr):
+    try:
+        data = conn.recv(8192)
+        if data:
+            lines = data.split("\r\n")
+            if lines:
+                method, path, _ = lines[0].split()
+                print("[%s:%d] %s %s" % (addr[0], addr[1], method, path))
+        
+        response = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nContent-Length: 48\r\n\r\n<html><body>Hello from test server!</body></html>"
+        conn.sendall(response)
+    finally:
+        conn.close()
+
+def main():
+    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+    server.bind(('127.0.0.1', 8888))
+    server.listen(5)
+    print("Test server running on 127.0.0.1:8888")
+    
+    while True:
+        conn, addr = server.accept()
+        t = threading.Thread(target=handle_client, args=(conn, addr))
+        t.daemon = True
+        t.start()
+
+if __name__ == "__main__":
+    main()