5 files changed, 181 insertions, 17 deletions

diff --git a/g4f/Provider/Liaobots.py b/g4f/Provider/Liaobots.py
index 33224d2e..ea3e0d45 100644
--- a/g4f/Provider/Liaobots.py
+++ b/g4f/Provider/Liaobots.py
@@ -46,8 +46,6 @@ class Liaobots(AsyncGeneratorProvider):
         **kwargs
     ) -> AsyncGenerator:
         model = model if model in models else "gpt-3.5-turbo"
-        if proxy and "://" not in proxy:
-            proxy = f"http://{proxy}"
         headers = {
             "authority": "liaobots.com",
             "content-type": "application/json",
diff --git a/g4f/Provider/Myshell.py b/g4f/Provider/Myshell.py
new file mode 100644
index 00000000..0ddd3029
--- /dev/null
+++ b/g4f/Provider/Myshell.py
@@ -0,0 +1,172 @@
+from __future__ import annotations
+
+import json, uuid, hashlib, time, random
+
+from aiohttp import ClientSession
+from aiohttp.http import WSMsgType
+import asyncio
+
+from ..typing import AsyncGenerator
+from .base_provider import AsyncGeneratorProvider, format_prompt
+
+
+models = {
+    "samantha": "1e3be7fe89e94a809408b1154a2ee3e1",
+    "gpt-3.5-turbo": "8077335db7cd47e29f7de486612cc7fd",
+    "gpt-4": "01c8de4fbfc548df903712b0922a4e01",
+}
+
+
+class Myshell(AsyncGeneratorProvider):
+    url = "https://app.myshell.ai/chat"
+    working               = True
+    supports_gpt_35_turbo = True
+    supports_gpt_4        = True
+
+    @classmethod
+    async def create_async_generator(
+        cls,
+        model: str,
+        messages: list[dict[str, str]],
+        **kwargs
+    ) -> AsyncGenerator:
+        if not model:
+            bot_id = models["samantha"]
+        elif model in models:
+            bot_id = models[model]
+        else:
+            raise ValueError(f"Model are not supported: {model}")
+        
+        user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36'
+        visitor_id = generate_visitor_id(user_agent)
+
+        async with ClientSession(
+            headers={'User-Agent': user_agent}
+        ) as session:
+            async with session.ws_connect(
+                "wss://api.myshell.ai/ws/?EIO=4&transport=websocket",
+                autoping=False,
+                timeout=90
+            ) as wss:
+                # Send and receive hello message
+                await wss.receive_str()
+                message = json.dumps({"token": None, "visitorId": visitor_id})
+                await wss.send_str(f"40/chat,{message}")
+                await wss.receive_str()
+
+                # Fix "need_verify_captcha" issue
+                await asyncio.sleep(5)
+
+                # Create chat message
+                text = format_prompt(messages)
+                chat_data = json.dumps(["text_chat",{
+                    "reqId": str(uuid.uuid4()),
+                    "botUid": bot_id,
+                    "sourceFrom": "myshellWebsite",
+                    "text": text,
+                    **generate_signature(text)
+                }])
+
+                # Send chat message
+                chat_start = "42/chat,"
+                chat_message = f"{chat_start}{chat_data}"
+                await wss.send_str(chat_message)
+
+                # Receive messages
+                async for message in wss:
+                    if message.type != WSMsgType.TEXT:
+                        continue
+                    # Ping back
+                    if message.data == "2":
+                        await wss.send_str("3")
+                        continue
+                    # Is not chat message
+                    if not message.data.startswith(chat_start):
+                        continue
+                    data_type, data = json.loads(message.data[len(chat_start):])
+                    if data_type == "text_stream":
+                        if data["data"]["text"]:
+                            yield data["data"]["text"]
+                        elif data["data"]["isFinal"]:
+                            break
+                    elif data_type in ("message_replied", "need_verify_captcha"):
+                        raise RuntimeError(f"Received unexpected message: {data_type}")
+
+
+    @classmethod
+    @property
+    def params(cls):
+        params = [
+            ("model", "str"),
+            ("messages", "list[dict[str, str]]"),
+            ("stream", "bool"),
+        ]
+        param = ", ".join([": ".join(p) for p in params])
+        return f"g4f.provider.{cls.__name__} supports: ({param})"
+
+
+def generate_timestamp() -> str:
+    return str(
+        int(
+            str(int(time.time() * 1000))[:-1]
+            + str(
+                sum(
+                    2 * int(digit)
+                    if idx % 2 == 0
+                    else 3 * int(digit)
+                    for idx, digit in enumerate(str(int(time.time() * 1000))[:-1])
+                )
+                % 10
+            )
+        )
+    )
+
+def generate_signature(text: str):
+    timestamp = generate_timestamp()
+    version = 'v1.0.0'
+    secret = '8@VXGK3kKHr!u2gA' 
+    data = f"{version}#{text}#{timestamp}#{secret}"
+    signature = hashlib.md5(data.encode()).hexdigest()
+    signature = signature[::-1]
+    return {
+        "signature": signature,
+        "timestamp": timestamp,
+        "version": version
+    }
+
+def xor_hash(B: str):
+    r = []
+    i = 0
+    
+    def o(e, t):
+        o_val = 0
+        for i in range(len(t)):
+            o_val |= r[i] << (8 * i)
+        return e ^ o_val
+    
+    for e in range(len(B)):
+        t = ord(B[e])
+        r.insert(0, 255 & t)
+        
+        if len(r) >= 4:
+            i = o(i, r)
+            r = []
+    
+    if len(r) > 0:
+        i = o(i, r)
+    
+    return hex(i)[2:]
+
+def performance() -> str:
+    t = int(time.time() * 1000)
+    e = 0
+    while t == int(time.time() * 1000):
+        e += 1
+    return hex(t)[2:] + hex(e)[2:]
+
+def generate_visitor_id(user_agent: str) -> str:
+    f = performance()
+    r = hex(int(random.random() * (16**16)))[2:-2]
+    d = xor_hash(user_agent)
+    e = hex(1080 * 1920)[2:]
+    return f"{f}-{r}-{d}-{e}-{f}"
\ No newline at end of file
diff --git a/g4f/Provider/OpenAssistant.py b/g4f/Provider/OpenAssistant.py
index 3a931597..1e9a0661 100644
--- a/g4f/Provider/OpenAssistant.py
+++ b/g4f/Provider/OpenAssistant.py
@@ -23,8 +23,6 @@ class OpenAssistant(AsyncGeneratorProvider):
         cookies: dict = None,
         **kwargs: Any
     ) -> AsyncGenerator:
-        if proxy and "://" not in proxy:
-            proxy = f"http://{proxy}"
         if not cookies:
             cookies = get_cookies("open-assistant.io")
 
diff --git a/g4f/Provider/OpenaiChat.py b/g4f/Provider/OpenaiChat.py
index cbe886f0..f7dc8298 100644
--- a/g4f/Provider/OpenaiChat.py
+++ b/g4f/Provider/OpenaiChat.py
@@ -25,14 +25,7 @@ class OpenaiChat(AsyncProvider):
         cookies: dict = None,
         **kwargs: dict
     ) -> AsyncGenerator:
-        proxies = None
-        if proxy:
-            if "://" not in proxy:
-                proxy = f"http://{proxy}"
-            proxies = {
-                "http": proxy,
-                "https": proxy
-            }
+        proxies = {"https": proxy}
         if not access_token:
             access_token = await cls.get_access_token(cookies, proxies)
         headers = {
@@ -61,15 +54,16 @@ class OpenaiChat(AsyncProvider):
             for line in response.content.decode().splitlines():
                 if line.startswith("data: "):
                     line = line[6:]
-                    if line != "[DONE]":
-                        line = json.loads(line)
-                        if "message" in line:
-                            last_message = line["message"]["content"]["parts"][0]
+                    if line == "[DONE]":
+                        break
+                    line = json.loads(line)
+                    if "message" in line:
+                        last_message = line["message"]["content"]["parts"][0]
             return last_message
 
 
     @classmethod
-    async def get_access_token(cls, cookies: dict = None, proxies: dict = None):
+    async def get_access_token(cls, cookies: dict = None, proxies: dict = None) -> str:
         if not cls._access_token:
             cookies = cookies if cookies else get_cookies("chat.openai.com")
             async with AsyncSession(proxies=proxies, cookies=cookies, impersonate="chrome107") as session:
diff --git a/g4f/Provider/__init__.py b/g4f/Provider/__init__.py
index b9ee2544..aa19ade3 100644
--- a/g4f/Provider/__init__.py
+++ b/g4f/Provider/__init__.py
@@ -21,6 +21,7 @@ from .H2o           import H2o
 from .HuggingChat   import HuggingChat
 from .Liaobots      import Liaobots
 from .Lockchat      import Lockchat
+from .Myshell       import Myshell
 from .Opchatgpts    import Opchatgpts
 from .OpenaiChat    import OpenaiChat
 from .OpenAssistant import OpenAssistant
@@ -68,6 +69,7 @@ __all__ = [
     'HuggingChat',
     'Liaobots',
     'Lockchat',
+    'Myshell',
     'Opchatgpts',
     'Raycast',
     'OpenaiChat',