diff --git a/README_en.md b/README_en.md
index 46ccff6..9820a90 100644
--- a/README_en.md
+++ b/README_en.md
@@ -10,6 +10,7 @@ The project uses the Chinese national standard cryptography algorithm to impleme
 .  
 ├── basedockerfile (being used to build base iamge)  
 ├── dockerfile (being used to build application)  
+├── doc (development documents)  
 ├── include (gmssl header)  
 ├── lib (gmssl shared object)  
 ├── LICENSE  
diff --git a/basedockerfile b/basedockerfile
index 622815f..960c6ca 100644
--- a/basedockerfile
+++ b/basedockerfile
@@ -1,6 +1,8 @@
 FROM python:3.11
 
-COPY src /app
+COPY requirements.txt /app/
+
+COPY lib/* /lib/
 
 WORKDIR /app
 
diff --git a/src/README_app.md b/doc/README_app.md
similarity index 100%
rename from src/README_app.md
rename to doc/README_app.md
diff --git a/doc/README_app_en.md b/doc/README_app_en.md
new file mode 100644
index 0000000..174da99
--- /dev/null
+++ b/doc/README_app_en.md
@@ -0,0 +1,7 @@
+# APP Doc
+
+## Client router
+
+/request_node
+get method
+pr
diff --git a/src/README_tpre.md b/doc/README_tpre.md
similarity index 100%
rename from src/README_tpre.md
rename to doc/README_tpre.md
diff --git a/src/README_tpre_en.md b/doc/README_tpre_en.md
similarity index 100%
rename from src/README_tpre_en.md
rename to doc/README_tpre_en.md
diff --git a/requirements.txt b/requirements.txt
index 049ec0e..9551179 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,3 @@
-gmssl-python
\ No newline at end of file
+gmssl-python
+fastapi
+uvicorn
\ No newline at end of file
diff --git a/src/README_app_en.md b/src/README_app_en.md
deleted file mode 100644
index e69de29..0000000
diff --git a/src/demo.py b/src/demo.py
index f68dc8a..b8a2b46 100644
--- a/src/demo.py
+++ b/src/demo.py
@@ -1,30 +1,50 @@
 from tpre import *
+import time
 
 # 1
+start_time = time.time()
 pk_a, sk_a = GenerateKeyPair()
 m = b"hello world"
+end_time = time.time()
+elapsed_time = end_time - start_time
+print(f"代码块1运行时间:{elapsed_time}秒")
 
 # 2
+start_time = time.time()
 capsule_ct = Encrypt(pk_a, m)
+end_time = time.time()
+elapsed_time = end_time - start_time
+print(f"代码块2运行时间:{elapsed_time}秒")
 
 # 3
 pk_b, sk_b = GenerateKeyPair()
 
-N = 70
-T = 49
+N = 10
+T = 5
 
 # 5
+start_time = time.time()
 rekeys = GenerateReKey(sk_a, pk_b, N, T)
+end_time = time.time()
+elapsed_time = end_time - start_time
+print(f"代码块5运行时间:{elapsed_time}秒")
 
 # 7
+start_time = time.time()
 cfrag_cts = []
 
 for rekey in rekeys:
     cfrag_ct = ReEncrypt(rekey, capsule_ct)
     cfrag_cts.append(cfrag_ct)
+end_time = time.time()
+elapsed_time = end_time - start_time
+print(f"代码块7运行时间:{elapsed_time}秒")
 
 # 9
+start_time = time.time()
 cfrags = mergecfrag(cfrag_cts)
 m = DecryptFrags(sk_b, pk_b, pk_a, cfrags)
-
+end_time = time.time()
+elapsed_time = end_time - start_time
+print(f"代码块9运行时间:{elapsed_time}秒")
 print(m)
diff --git a/src/server.py b/src/server.py
index e69de29..5a25696 100644
--- a/src/server.py
+++ b/src/server.py
@@ -0,0 +1,44 @@
+from fastapi import FastAPI
+from fastapi.encoders import jsonable_encoder
+from fastapi.responses import JSONResponse
+from typing import Tuple, Callable
+
+app = FastAPI()
+
+@app.get("/server/get_node")
+async def get_node(ip: str) -> int:
+    '''
+    中心服务器与节点交互, 节点发送ip, 中心服务器接收ip存入数据库并将ip转换为int作为节点id返回给节点
+    params:
+    ip: node ip
+    return:
+    id: ip按点分割成四部分, 每部分转二进制后拼接再转十进制作为节点id
+    '''
+    # ip存入数据库, id = hash(int(ip))
+
+    ip_parts = ip.split(".")
+    ip_int = 0
+    for i in range(4):
+        ip_int += int(ip_parts[i]) << (24 - (8 * i))
+    return ip_int
+
+@app.get("/server/delete_node")
+async def delete_node(ip: str) -> None:
+    # 按照节点ip遍历数据库, 删除该行数据
+
+@app.post("/server/send_nodes_list")
+async def send_nodes_list(count: int) -> JSONResponse:
+    '''
+    中心服务器与客户端交互, 客户端发送所需节点个数, 中心服务器从数据库中顺序取出节点封装成json格式返回给客户端
+    params:
+    count: 所需节点个数
+    return:
+    JSONResponse: {id: ip,...}
+    '''
+    nodes_list = {}
+    for i in range(count):
+        # 访问数据库取出节点数据
+        node = (id, ip)
+        nodes_list[node[0]] = node[1]
+    json_result = jsonable_encoder(nodes_list)
+    return JSONResponse(content=json_result)
\ No newline at end of file