Add session health check and reconnect support to Info and Exchange class

The REST session in the Info and Exchange instances appears to expire after ~3 minutes of inactivity. It would be helpful to expose methods such as is_alive() and reconnect() (or similar) to handle this automatically.

BTW. WebSocket can be handled by:

def restart_WeSokects(): # Restart WebSockets if dead
global info
if not info.ws_manager or not info.ws_manager.is_alive():
# print("\n= WebSocket alive:",info.ws_manager.is_alive())
info.disconnect_websocket()
info.ws_manager = WebsocketManager(info.base_url)
info.ws_manager.start()
print("\n= Restart WebSocket:",info.ws_manager.is_alive())
return

I don;t know if you saw this comment #191 (comment)

This will work forever.

Well, thx. WebSocket reconnection it's only part of error handling. The other one is REST (calling eg. info.open_orders() will throw exception after 3+ min of inactivity). I can handle it by myself, but it will be nice to have it implemented in SDK.

That's weird that "info.open_orders() will throw exception after 3+ min of inactivity". The REST API has no any connection/reconnection stuff. Could you please provide the REST error message?

Info class init has (from API): self.session = requests.Session()
Here it is exception (without this opnords = info.open_orders(secret.WALLET_ADDRESS[1] there is no exception and it only occurs after 3+ minutes - if calls every 1 min it works):

File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 787, in urlopen
response = self._make_request(
conn,
...<10 lines>...
**response_kw,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 534, in _make_request
response = conn.getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connection.py", line 565, in getresponse
httplib_response = super().getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 1430, in getresponse
response.begin()
~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 331, in begin
version, status, reason = self._read_status()
~~~~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 292, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/socket.py", line 719, in readinto
return self._sock.recv_into(b)
~~~~~~~~~~~~~~~~~~~~^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1304, in recv_into
return self.read(nbytes, buffer)
~~~~~~~~~^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1138, in read
return self._sslobj.read(len, buffer)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
ConnectionResetError: [Errno 54] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/adapters.py", line 644, in send
resp = conn.urlopen(
method=request.method,
...<9 lines>...
chunked=chunked,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 841, in urlopen
retries = retries.increment(
method, url, error=new_e, _pool=self, _stacktrace=sys.exc_info()[2]
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/util/retry.py", line 474, in increment
raise reraise(type(error), error, _stacktrace)
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/util/util.py", line 38, in reraise
raise value.with_traceback(tb)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 787, in urlopen
response = self._make_request(
conn,
...<10 lines>...
**response_kw,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 534, in _make_request
response = conn.getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connection.py", line 565, in getresponse
httplib_response = super().getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 1430, in getresponse
response.begin()
~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 331, in begin
version, status, reason = self._read_status()
~~~~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 292, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/socket.py", line 719, in readinto
return self._sock.recv_into(b)
~~~~~~~~~~~~~~~~~~~~^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1304, in recv_into
return self.read(nbytes, buffer)
~~~~~~~~~^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1138, in read
return self._sslobj.read(len, buffer)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
urllib3.exceptions.ProtocolError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Volumes/Cryptovc/scripts/./h.py", line 359, in
calcel_old_buy_orders()
~~~~~~~~~~~~~~~~~~~~~^^
File "/Volumes/Cryptovc/scripts/./h.py", line 218, in calcel_old_buy_orders
opnords = info.open_orders(secret.WALLET_ADDRESS[1])
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/hyperliquid/info.py", line 152, in open_orders
return self.post("/info", {"type": "openOrders", "user": address, "dex": dex})
~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/hyperliquid/api.py", line 23, in post
response = self.session.post(url, json=payload, timeout=self.timeout)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 637, in post
return self.request("POST", url, data=data, json=json, **kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 589, in request
resp = self.send(prep, **send_kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 703, in send
r = adapter.send(request, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/adapters.py", line 659, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

Weird. It seems it's something with response = self.session.post().

I took a test but it worked well. I didn't get the error above. I tested TESTNET_API_URL.

from eth_account import Account
from hyperliquid.exchange import Exchange, LocalAccount
from hyperliquid.info import Info
from hyperliquid.utils import signing
from hyperliquid.utils import constants

agent_account: LocalAccount = Account.from_key("0x13e9b3741b86d2eb0aa442b37362XXXXXXXXXXXXXXXZZZZZZZZZZZZZ")

exchange: Exchange = Exchange(agent_account, 
                              base_url=constants.TESTNET_API_URL, 
                              account_address=agent_account.address,
                              perp_dexs=["", "xyz"],)

# sleep 3 mins
time.sleep(180)

open_orders = exchange.info.open_orders(agent_account.address)
print(open_orders)

Well, here is example that crashes (8/10 times on the second print):
#---
from hyperliquid.info import Info
import time

info = Info(constants.MAINNET_API_URL,skip_ws=False)

def test():
print(info.open_orders(secret.WALLET_ADDRESS[1]) )
time.sleep (240)
print(info.open_orders(secret.WALLET_ADDRESS[1]) )
return

test()
#--- result:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 787, in urlopen
response = self._make_request(
conn,
...<10 lines>...
**response_kw,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 534, in _make_request
response = conn.getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connection.py", line 565, in getresponse
httplib_response = super().getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 1430, in getresponse
response.begin()
~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 331, in begin
version, status, reason = self._read_status()
~~~~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 292, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/socket.py", line 719, in readinto
return self._sock.recv_into(b)
~~~~~~~~~~~~~~~~~~~~^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1304, in recv_into
return self.read(nbytes, buffer)
~~~~~~~~~^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1138, in read
return self._sslobj.read(len, buffer)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
ConnectionResetError: [Errno 54] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/adapters.py", line 644, in send
resp = conn.urlopen(
method=request.method,
...<9 lines>...
chunked=chunked,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 841, in urlopen
retries = retries.increment(
method, url, error=new_e, _pool=self, _stacktrace=sys.exc_info()[2]
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/util/retry.py", line 474, in increment
raise reraise(type(error), error, _stacktrace)
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/util/util.py", line 38, in reraise
raise value.with_traceback(tb)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 787, in urlopen
response = self._make_request(
conn,
...<10 lines>...
**response_kw,
)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connectionpool.py", line 534, in _make_request
response = conn.getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/urllib3/connection.py", line 565, in getresponse
httplib_response = super().getresponse()
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 1430, in getresponse
response.begin()
~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 331, in begin
version, status, reason = self._read_status()
~~~~~~~~~~~~~~~~~^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/http/client.py", line 292, in _read_status
line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/socket.py", line 719, in readinto
return self._sock.recv_into(b)
~~~~~~~~~~~~~~~~~~~~^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1304, in recv_into
return self.read(nbytes, buffer)
~~~~~~~~~^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/ssl.py", line 1138, in read
return self._sslobj.read(len, buffer)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
urllib3.exceptions.ProtocolError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Volumes/Cryptovc/scripts/./h.py", line 367, in
test()
~~~~^^
File "/Volumes/Cryptovc/scripts/./h.py", line 59, in test
print(info.open_orders(secret.WALLET_ADDRESS[1]) )
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/hyperliquid/info.py", line 152, in open_orders
return self.post("/info", {"type": "openOrders", "user": address, "dex": dex})
~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/hyperliquid/api.py", line 23, in post
response = self.session.post(url, json=payload, timeout=self.timeout)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 637, in post
return self.request("POST", url, data=data, json=json, **kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 589, in request
resp = self.send(prep, **send_kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/sessions.py", line 703, in send
r = adapter.send(request, **kwargs)
File "/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/requests/adapters.py", line 659, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', ConnectionResetError(54, 'Connection reset by peer'))

@4stah

@4stah will it be crashing if you set skip_ws=True?

I confirm that your code makes a crash on the info. Both with skip_ws=True and with skip_ws=False. I would set this issue as HIGH PRIORITY!

Tested code:

from hyperliquid.info import Info
import time
from hyperliquid.utils import constants

info = Info(constants.MAINNET_API_URL,skip_ws=True)

def test():
    print(info.open_orders("0x53A43e7764213870564409bAXXXXXXXX") )
    time.sleep (240)
    print(info.open_orders("0x53A43e7764213870564409XXXXXXXXXX") )
    return

test()
test()
test()
test()
test()

Log:

[]
Traceback (most recent call last):
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connectionpool.py", line 787, in urlopen
    response = self._make_request(
               ^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connectionpool.py", line 534, in _make_request
    response = conn.getresponse()
               ^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connection.py", line 571, in getresponse
    httplib_response = super().getresponse()
                       ^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 1430, in getresponse
    response.begin()
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 331, in begin
    version, status, reason = self._read_status()
                              ^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 300, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\requests\adapters.py", line 644, in send
    resp = conn.urlopen(
           ^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connectionpool.py", line 841, in urlopen
    retries = retries.increment(
              ^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\util\retry.py", line 474, in increment
    raise reraise(type(error), error, _stacktrace)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\util\util.py", line 38, in reraise
    raise value.with_traceback(tb)
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connectionpool.py", line 787, in urlopen
    response = self._make_request(
               ^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connectionpool.py", line 534, in _make_request
    response = conn.getresponse()
               ^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\urllib3\connection.py", line 571, in getresponse
    httplib_response = super().getresponse()
                       ^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 1430, in getresponse
    response.begin()
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 331, in begin
    version, status, reason = self._read_status()
                              ^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.12_3.12.2800.0_x64__qbz5n2kfra8p0\Lib\http\client.py", line 300, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
urllib3.exceptions.ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "d:\Projects\Crpt\TBots\BotEngine2\BotEngine2\Test\test.py", line 13, in <module>
    test()
  File "d:\Projects\Crpt\TBots\BotEngine2\BotEngine2\Test\test.py", line 10, in test
    print(info.open_orders("0x53A43e7764213870564409bA3dfEE4996723Df43") )
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\hyperliquid\info.py", line 171, in open_orders
    return self.post("/info", {"type": "openOrders", "user": address, "dex": dex})
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\hyperliquid\api.py", line 23, in post
    response = self.session.post(url, json=payload, timeout=self.timeout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\requests\sessions.py", line 637, in post
    return self.request("POST", url, data=data, json=json, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\requests\sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\requests\sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Projects\Crpt\TBots\BotEngine2\.venv\Lib\site-packages\requests\adapters.py", line 659, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

A workaround fix. But it must be fixed by Hyperliquid devs properly!:

Variant 1:

from hyperliquid.info import Info
from http.client import RemoteDisconnected
import time
from hyperliquid.utils import constants

from requests.adapters import HTTPAdapter
from urllib3.exceptions import ProtocolError
from urllib3.util.retry import Retry


def patch_hyperliquid_session(session):
    class HyperliquidSessionRetry(Retry):
        def _is_read_error(self, err: Exception) -> bool:
            if not isinstance(err, ProtocolError):
                return False

            return any(isinstance(arg, RemoteDisconnected) for arg in err.args)

    retry = HyperliquidSessionRetry(
        total=1,
        connect=0,
        read=1,
        other=0,
        status=0,
        backoff_factor=0,
        status_forcelist=[],
        allowed_methods=["HEAD", "GET", "OPTIONS", "POST"],
    )
    adapter = HTTPAdapter(max_retries=retry)
    session.mount("http://", adapter)
    session.mount("https://", adapter)


def test(info: Info):
    print(info.open_orders("0x53A43e776421387xxxxxxxxxxxxxxxxxxxxxx") )
    time.sleep (240)
    print(info.open_orders("0x53A43e776421387xxxxxxxxxxxxxxxxxxxxxxx") )
    return

info: Info = Info(constants.MAINNET_API_URL,skip_ws=True)
patch_hyperliquid_session(info.session)  # Apply retry logic to the session

test(info)
test(info)
test(info)
test(info)
test(info)

Variant 2:

from hyperliquid.info import Info
import time
from hyperliquid.utils import constants


from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry


def test(info: Info):
    print(info.open_orders("0x53A43e776421387056xxxxxxxxxxxxxxxxx") )
    time.sleep (240)
    print(info.open_orders("0x53A43e77642138705xxxxxxxxxxxxxxxxxxxxx") )
    return

info: Info = Info(constants.MAINNET_API_URL,skip_ws=True)
info.session.headers.update({'Connection': 'close'})  # Fix "Connection: keep-alive" issue

test(info)
test(info)
test(info)
test(info)
test(info)

thx for confirmation.
for now, if you want avoid crash and you don't know if 200s idle passed away - the only resolution is to catch exception and create new instance. but it's a little dirty especially if parrallel you are using Websockets

That's pain making a new info instance every time. (((
the Info object initializes so long (it gets some heavy data from api).

It looks like the SDK is made by newbies. ))) It has many issues.

session.headers.update({'Connection': 'close'}) - brilliant - thx. it's working! As I understand - every time new TCP connection but way faster than recreate Info object....

Just a heads up. I've updated the Variant 1. It was battle tested and worked well for me.
#293 (comment)

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Add session health check and reconnect support to Info and Exchange class #293

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Add session health check and reconnect support to Info and Exchange class #293

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mifth commented on Apr 28, 2026

4stah commented on Apr 28, 2026

mifth commented on Apr 28, 2026

4stah commented on Apr 28, 2026

mifth commented on Apr 28, 2026

4stah commented on Apr 28, 2026

mifth commented on Apr 28, 2026

mifth commented on Apr 28, 2026

mifth commented on Apr 28, 2026

4stah commented on Apr 28, 2026

mifth commented on Apr 28, 2026

4stah commented on Apr 28, 2026

mifth commented on May 8, 2026

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