feat(codex-bridge): split into a splitter and a separate bridge process

bridge.py is now a small splitter with no features: a request for one of
Codex's own models goes to chatgpt.com byte for byte, a request for an added
model goes to kopru.py, which runs as its own process. Codex's own models no
longer pass through the feature code at all, and restarting or losing the
bridge process does not touch them.

Measured with real Codex on spare ports: own model answers; forced compaction
on the own model completes (twice) while the bridge process is restarted;
added model answers; no own-model request reaches the bridge process.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/desktop/assets/codex-bridge/test_access_programs.py

@@ -10,7 +10,7 @@ import urllib.request
 
 # Load only the actual adapter and routing method: no catalog/network/thread
 # startup or credential loading is needed to exercise the production code.
-source = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+source = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 flatten = next(n for n in source.body if isinstance(n, ast.FunctionDef) and n.name == "flatten_request")
 claude_sonu = next(n for n in source.body if isinstance(n, ast.FunctionDef) and n.name == "claude_sonu_duzelt")
 handler = next(n for n in source.body if isinstance(n, ast.ClassDef) and n.name == "H")

apps/desktop/assets/codex-bridge/test_ayirici.py

@@ -0,0 +1,214 @@
+"""The splitter (bridge.py): Codex's own models go to chatgpt.com byte for byte, added models to the bridge process.
+
+Real sockets, no network: a fake chatgpt.com and a fake bridge process record what reaches them."""
+import gzip
+import hashlib
+import http.client
+import http.server
+import json
+import tempfile
+import threading
+import time
+import unittest
+
+import bridge
+
+
+class Kayit(http.server.BaseHTTPRequestHandler):
+    """Records every request; answers from the server's `cevap` function."""
+    protocol_version = "HTTP/1.1"
+
+    def log_message(self, *a):
+        pass
+
+    def _her(self):
+        n = int(self.headers.get("Content-Length") or 0)
+        govde = self.rfile.read(n) if n else b""
+        self.server.gelen.append({"yontem": self.command, "yol": self.path, "baslik": dict(self.headers), "govde": govde})
+        self.server.cevap(self, govde)
+
+    do_GET = do_POST = _her
+
+
+def sunucu(cevap):
+    s = http.server.ThreadingHTTPServer(("127.0.0.1", 0), Kayit)
+    s.daemon_threads = True
+    s.gelen, s.cevap = [], cevap
+    threading.Thread(target=s.serve_forever, daemon=True).start()
+    return s
+
+
+def duz(durum, govde, tur="application/json"):
+    def f(h, _):
+        h.send_response(durum)
+        h.send_header("Content-Type", tur)
+        h.send_header("Content-Length", str(len(govde)))
+        h.end_headers()
+        h.wfile.write(govde)
+    return f
+
+
+def zstd(veri):
+    try:
+        from compression import zstd as z
+        return z.compress(veri)
+    except ImportError:
+        import zstandard
+        return zstandard.ZstdCompressor().compress(veri)
+
+
+class Ayirici(unittest.TestCase):
+    def setUp(self):
+        self.ozgun = sunucu(duz(200, b'event: response.completed\ndata: {"ok":1}\n\n', "text/event-stream"))
+        self.kopru = sunucu(duz(200, b'event: response.completed\ndata: {"kopru":1}\n\n', "text/event-stream"))
+        self.on = bridge.Sunucu(("127.0.0.1", 0), bridge.H)
+        threading.Thread(target=self.on.serve_forever, daemon=True).start()
+        self.eski = (bridge.CHATGPT, bridge.KOPRU, bridge.LOGDIR, dict(bridge.CFG))
+        self.gecici = tempfile.TemporaryDirectory()
+        bridge.CHATGPT = f"http://127.0.0.1:{self.ozgun.server_address[1]}"
+        bridge.KOPRU = f"http://127.0.0.1:{self.kopru.server_address[1]}"
+        bridge.LOGDIR = self.gecici.name
+        bridge.CFG.clear()
+
+    def tearDown(self):
+        for s in (self.on, self.ozgun, self.kopru):
+            s.shutdown()
+            s.server_close()
+        bridge.CHATGPT, bridge.KOPRU, bridge.LOGDIR, cfg = self.eski
+        bridge.CFG.clear()
+        bridge.CFG.update(cfg)
+        self.gecici.cleanup()
+
+    def iste(self, yontem, yol, govde=None, baslik=None):
+        b = http.client.HTTPConnection("127.0.0.1", self.on.server_address[1], timeout=10)
+        b.request(yontem, yol, body=govde, headers=baslik or {})
+        y = b.getresponse()
+        veri = y.read()
+        b.close()
+        return y.status, veri, dict(y.getheaders())
+
+    def test_codex_own_model_reaches_chatgpt_byte_for_byte(self):
+        """Compressed or not, with a command, a lone dot or a compaction trigger in it: nothing is changed."""
+        istekler = [{"model": "gpt-6-astra", "input": [{"role": "user", "content": "modeli opus 5 5 yap"}]},
+                    {"model": "gpt-6-luna", "input": [{"role": "user", "content": "."}]},
+                    {"model": "gpt-6-astra", "prompt_cache_key": "s", "input": [{"type": "compaction_trigger"}]},
+                    {"model": "gpt-6-astra", "input": [{"type": "compaction", "encrypted_content": "ASTRABRIDGE-OZET-1:eA=="},
+                                                       {"type": "reasoning", "id": "rs_chatcmpl-x"}]}]
+        for veri in istekler:
+            ham = json.dumps(veri, ensure_ascii=False).encode("utf-8")
+            for kodlama, govde in (("zstd", zstd(ham)), ("gzip", gzip.compress(ham)), ("", ham)):
+                with self.subTest(model=veri["model"], kodlama=kodlama):
+                    baslik = {"Authorization": "Bearer sahte", "originator": "Codex Desktop", "chatgpt-account-id": "h1"}
+                    if kodlama:
+                        baslik["Content-Encoding"] = kodlama
+                    durum, cevap, _ = self.iste("POST", "/backend-api/codex/responses", govde, baslik)
+                    giden = self.ozgun.gelen[-1]
+                    self.assertEqual(hashlib.sha256(giden["govde"]).hexdigest(), hashlib.sha256(govde).hexdigest())
+                    basliklar = {k.lower(): v for k, v in giden["baslik"].items()}
+                    self.assertEqual(basliklar.get("content-encoding", ""), kodlama)
+                    self.assertEqual((basliklar["authorization"], basliklar["originator"], basliklar["chatgpt-account-id"]),
+                                     ("Bearer sahte", "Codex Desktop", "h1"))
+                    self.assertEqual(giden["yol"], "/backend-api/codex/responses")
+                    self.assertEqual((durum, cevap), (200, b'event: response.completed\ndata: {"ok":1}\n\n'))
+        self.assertEqual(self.kopru.gelen, [])        # the bridge process never saw any of them
+
+    def test_added_models_go_to_the_bridge_process_and_only_there(self):
+        for model in ("ide/Opus-5", "9r/cc/claude-opus-5-5"):
+            govde = zstd(json.dumps({"model": model, "input": []}).encode())
+            durum, cevap, _ = self.iste("POST", "/backend-api/codex/responses", govde,
+                                        {"Content-Encoding": "zstd", "originator": "Codex Desktop"})
+            self.assertEqual((durum, cevap), (200, b'event: response.completed\ndata: {"kopru":1}\n\n'))
+            self.assertEqual(self.kopru.gelen[-1]["govde"], govde)
+            basliklar = {k.lower(): v for k, v in self.kopru.gelen[-1]["baslik"].items()}
+            self.assertEqual((basliklar["originator"], basliklar["content-encoding"]), ("Codex Desktop", "zstd"))
+        bridge.CFG["model_map"] = {"ozel-model": ["rota", "hedef"]}
+        self.iste("POST", "/backend-api/codex/responses", json.dumps({"model": "ozel-model"}).encode())
+        self.assertEqual(len(self.kopru.gelen), 3)
+        self.assertEqual(self.ozgun.gelen, [])
+
+    def test_a_body_that_cannot_be_read_takes_codex_own_path_untouched(self):
+        for govde, baslik in ((b"\x00\x01bozuk", {"Content-Encoding": "zstd"}), (b"json degil", {}), (b"[1,2]", {})):
+            self.iste("POST", "/backend-api/codex/responses", govde, baslik)
+            self.assertEqual(self.ozgun.gelen[-1]["govde"], govde)
+        self.assertEqual(self.kopru.gelen, [])
+
+    def test_codex_own_model_keeps_working_while_the_bridge_process_is_down(self):
+        self.kopru.shutdown()
+        self.kopru.server_close()
+        govde = json.dumps({"model": "gpt-6-astra", "input": []}).encode()
+        self.assertEqual(self.iste("POST", "/backend-api/codex/responses", govde)[0], 200)
+        # The model list falls back to chatgpt.com's own list, unchanged.
+        self.ozgun.cevap = duz(200, b'{"models":[{"slug":"gpt-6-astra"}]}')
+        durum, liste, _ = self.iste("GET", "/backend-api/codex/models?client_version=1", None, {"If-None-Match": "x"})
+        self.assertEqual((durum, liste), (200, b'{"models":[{"slug":"gpt-6-astra"}]}'))
+        # An added model says so instead of hanging or going to chatgpt.com under another name.
+        durum, cevap, _ = self.iste("POST", "/backend-api/codex/responses", json.dumps({"model": "ide/Opus-5"}).encode())
+        self.assertEqual(durum, 503)
+        self.assertIn("köprüsü şu an çalışmıyor", json.loads(cevap)["error"]["message"])
+        self.assertEqual([g["yol"].split("?")[0] for g in self.ozgun.gelen],
+                         ["/backend-api/codex/responses", "/backend-api/codex/models"])
+        # Status still answers in the shape AITURK IDE expects.
+        durum, cevap, _ = self.iste("GET", "/aiturk/codex-baglama/status")
+        d = json.loads(cevap)
+        self.assertEqual((durum, d["surum"], d["kopru"], d["ayirici"]), (200, "8", "kapali", True))
+
+    def test_model_list_comes_from_the_bridge_and_falls_back_when_it_fails(self):
+        self.kopru.cevap = duz(200, b'{"models":[{"slug":"gpt-6-astra"},{"slug":"ide/Opus-5"}]}')
+        self.assertIn(b"ide/Opus-5", self.iste("GET", "/backend-api/codex/models")[1])
+        self.assertEqual(self.ozgun.gelen, [])
+        self.kopru.cevap = duz(500, b'{"error":"x"}')
+        self.ozgun.cevap = duz(200, b'{"models":[{"slug":"gpt-6-astra"}]}')
+        self.assertEqual(self.iste("GET", "/backend-api/codex/models")[1], b'{"models":[{"slug":"gpt-6-astra"}]}')
+
+    def test_everything_else_and_errors_pass_through_as_they_are(self):
+        self.ozgun.cevap = duz(200, b'{"sonuc":1}')
+        self.assertEqual(self.iste("POST", "/backend-api/codex/alpha/search", b'{"q":"x"}')[1], b'{"sonuc":1}')
+        self.assertEqual(self.ozgun.gelen[-1]["govde"], b'{"q":"x"}')
+        self.ozgun.cevap = duz(400, b'{"error":{"message":"gecersiz"}}')
+        durum, cevap, _ = self.iste("POST", "/backend-api/codex/responses", json.dumps({"model": "gpt-6-astra"}).encode())
+        self.assertEqual((durum, cevap), (400, b'{"error":{"message":"gecersiz"}}'))
+        self.assertEqual(self.kopru.gelen, [])
+
+    def test_a_long_answer_streams_piece_by_piece_without_waiting_for_the_end(self):
+        """This morning's failure was an idle stream: Codex got no bytes for five minutes. Bytes must flow as they come."""
+        def yavas(h, _):
+            h.send_response(200)
+            h.send_header("Content-Type", "text/event-stream")
+            h.send_header("Transfer-Encoding", "chunked")
+            h.end_headers()
+            for parca in (b"data: bir\n\n", b"data: iki\n\n"):
+                h.wfile.write(b"%x\r\n" % len(parca) + parca + b"\r\n")
+                h.wfile.flush()
+                time.sleep(1.0)
+            h.wfile.write(b"0\r\n\r\n")
+        self.ozgun.cevap = yavas
+        b = http.client.HTTPConnection("127.0.0.1", self.on.server_address[1], timeout=10)
+        bas = time.time()
+        b.request("POST", "/backend-api/codex/responses", body=json.dumps({"model": "gpt-6-astra"}).encode())
+        y = b.getresponse()
+        ilk = y.read1(64)
+        ilk_sure = time.time() - bas
+        kalan = y.read()
+        b.close()
+        self.assertEqual(ilk, b"data: bir\n\n")
+        self.assertLess(ilk_sure, 0.8)                     # the first piece arrived before the answer ended
+        self.assertEqual(kalan, b"data: iki\n\n")
+
+    def test_status_is_the_bridge_status_plus_the_splitter_fields(self):
+        self.kopru.cevap = duz(200, b'{"ok": true, "surum": "8", "kod": "abc", "ide_durum": "tamam", "ide_model": 147}')
+        d = json.loads(self.iste("GET", "/aiturk/codex-baglama/status")[1])
+        self.assertEqual((d["surum"], d["ide_model"], d["kopru"], d["ayirici"]), ("8", 147, "calisiyor", True))
+
+    def test_a_persistent_connection_is_refused_the_way_it_is_today(self):
+        durum, _, _ = self.iste("GET", "/backend-api/codex/responses", None, {"Upgrade": "websocket", "Connection": "Upgrade"})
+        self.assertEqual(durum, 426)
+        self.assertEqual(self.ozgun.gelen + self.kopru.gelen, [])
+
+    def test_which_side_a_model_is_on(self):
+        for slug, ek in (("ide/Opus-5", True), ("9r/ag/gemini", True), ("gpt-6-astra", False), ("gpt-6.1-sol", False),
+                         ("", False), (None, False), ("idea", False)):
+            self.assertEqual(bridge.ek_model_mu(slug), ek, slug)
+
+
+if __name__ == "__main__":
+    unittest.main()

apps/desktop/assets/codex-bridge/test_claude_sonu.py

@@ -4,7 +4,7 @@ import json
 from pathlib import Path
 import unittest
 
-tree = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+tree = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 env = {}
 exec(compile(ast.Module(body=[n for n in tree.body if isinstance(n, ast.FunctionDef) and n.name == "claude_sonu_duzelt"], type_ignores=[]), "bridge.py", "exec"), env)
 f = env["claude_sonu_duzelt"]

apps/desktop/assets/codex-bridge/test_combo_tekrar.py

@@ -13,7 +13,7 @@ from unittest.mock import Mock
 import urllib.error
 import urllib.request
 
-source = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+source = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 pick = lambda name: next(n for n in source.body if isinstance(n, ast.FunctionDef) and n.name == name)
 handler = next(n for n in source.body if isinstance(n, ast.ClassDef) and n.name == "H")
 responses = next(n for n in handler.body if isinstance(n, ast.FunctionDef) and n.name == "_responses")

apps/desktop/assets/codex-bridge/test_denetim_ek.py

@@ -22,7 +22,7 @@ import pencere
 import resim_context
 import yarim
 
-SOURCE = Path(__file__).with_name("bridge.py").read_text(encoding="utf-8")
+SOURCE = Path(__file__).with_name("kopru.py").read_text(encoding="utf-8")
 tree = ast.parse(SOURCE)
 handler = next(n for n in tree.body if isinstance(n, ast.ClassDef) and n.name == "H")
 

apps/desktop/assets/codex-bridge/test_kopru7_ek.py

@@ -7,7 +7,7 @@ from pathlib import Path
 
 import pencere
 
-tree = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+tree = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 names = {"fix_tool_ids", "SseRewriter", "phase_damgala", "asistan_mesaji_mi", "nokta_mesaji_mi", "hazir_yaniti",
          "sema_duzelt", "arac_semalarini_duzelt"}
 nodes = [n for n in tree.body if isinstance(n, (ast.FunctionDef, ast.ClassDef)) and n.name in names]

apps/desktop/assets/codex-bridge/test_model_switch.py

@@ -6,7 +6,7 @@ from pathlib import Path
 import unittest
 
 
-tree = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+tree = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 names = {"flatten_request", "fix_tool_ids", "drop_foreign_items", "SseRewriter", "phase_damgala",
          "asistan_mesaji_mi"}
 nodes = [n for n in tree.body if isinstance(n, (ast.FunctionDef, ast.ClassDef)) and n.name in names]

apps/desktop/assets/codex-bridge/test_pencere_phase.py

@@ -10,7 +10,7 @@ import ide_catalog as c
 import pencere
 import resim_context
 
-tree = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+tree = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 names = {"fix_tool_ids", "SseRewriter", "phase_damgala", "asistan_mesaji_mi"}
 nodes = [n for n in tree.body if isinstance(n, (ast.FunctionDef, ast.ClassDef)) and n.name in names]
 for node in tree.body:

apps/desktop/assets/codex-bridge/test_zstd.py

@@ -3,7 +3,7 @@ import ast
 import unittest
 from pathlib import Path
 
-tree = ast.parse(Path(__file__).with_name("bridge.py").read_text(encoding="utf-8"))
+tree = ast.parse(Path(__file__).with_name("kopru.py").read_text(encoding="utf-8"))
 wanted = {"_zstd_decompress", "_zstd_ready", "decompress"}
 env = {}
 exec(compile(ast.Module(body=[n for n in tree.body if isinstance(n, ast.FunctionDef) and n.name in wanted],