diff --git a/wg-p2p-client.py b/wg-p2p-client.py
index 367bcb7..7b387f3 100644
--- a/wg-p2p-client.py
+++ b/wg-p2p-client.py
@@ -5,35 +5,36 @@ import requests
 from pathlib import Path
 from wgconfig import WireGuardConfig, wg_showconf, wg_syncconf
 
+
+def local_hash(ifname: str):
+    return hashlib.sha256(wg_showconf(ifname).encode()).hexdigest()
+
+
 cfg = yaml.safe_load(Path(__file__).with_suffix(".conf").read_text())
 last_hash = ""
 last_local_hash = ""
 url = f"{cfg['url']}/hash/{cfg['remote_wg']}"
 urlpat2 = f"{cfg['url']}/peers/{cfg['remote_wg']}"
-while True:
-    new_hash = requests.get(
-        url,
-        cert=("client1.crt", "client1.key"),
-        verify="ca.crt",
-    ).text
-    new_local_hash = hashlib.sha256(wg_showconf(
-        cfg["local_wg"]).encode()).hexdigest()
-    if last_hash != new_hash or last_local_hash != new_local_hash:
-        print(f"update hash to {new_hash}")
-        print(f"update local_hash to {new_local_hash}")
-        local_cfg = WireGuardConfig.get_from_interface(cfg["local_wg"])
-        for peer in cfg["peers"]:
-            if p := local_cfg.get_peer(peer):
-                url2 = f"{urlpat2}/{peer}"
-                res = requests.get(
-                    url2,
-                    cert=("client1.crt", "client1.key"),
-                    verify="ca.crt",
-                ).json()
-                p["Endpoint"] = res["Endpoint"]
-        wg_syncconf(cfg["local_wg"], str(local_cfg))
-        new_local_hash = hashlib.sha256(wg_showconf(
-            cfg["local_wg"]).encode()).hexdigest()
-    last_hash = new_hash
-    last_local_hash = new_local_hash
-    sleep(5)
+with requests.Session() as sess:
+    sess.verify = "ca.crt"
+    sess.cert = ("client1.crt", "client1.key")
+    while True:
+        try:
+            new_hash = sess.get(url).text
+            new_local_hash = local_hash(cfg["local_wg"])
+            if last_hash != new_hash or last_local_hash != new_local_hash:
+                print(f"update hash to {new_hash}")
+                local_cfg = WireGuardConfig.get_from_interface(cfg["local_wg"])
+                for peer in cfg["peers"]:
+                    if p := local_cfg.get_peer(peer):
+                        url2 = f"{urlpat2}/{peer}"
+                        res = sess.get(url2).json()
+                        p["Endpoint"] = res["Endpoint"]
+                wg_syncconf(cfg["local_wg"], str(local_cfg))
+                new_local_hash = local_hash(cfg["local_wg"])
+                print(f"update local_hash to {new_local_hash}")
+            last_hash = new_hash
+            last_local_hash = new_local_hash
+        except Exception as ex:
+            print(ex)
+        sleep(5)