EOFError: ran out of input. Getting this error when trying to pickle.loads from a socket

Question

我有一个 numpy ndarray 正试图通过套接字连接发送。当我尝试在服务器上加载它时，使用 pickle.loads 我得到 EOFError: ran out of input。

client.py

import numpy as np
import socket, pickle
import struct
HOST = "192.168.143.xxx"
PORT = 50007
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
centers = np.zeros((100, 43919))
packet = pickle.dumps(centers)
length = struct.pack('>I', len(packet))
packet = length + packet
s.send(packet)

data = s.recv(8192)
data_new = pickle.loads(data)
s.close()
print ('Received', data_new)

server.py

import socket, pickle, numpy as np
import struct
HOST = ''
PORT = 50007
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(2)

while 1:
    L = np.zeros((100, 43919))
    #wait to accept a connection - blocking call
    conn, addr = s.accept()
    print ('Connected with ', addr)
    buf = b''
    while len(buf) < 4:
        buf += conn.recv(4 - len(buf))

    length = struct.unpack('>I', buf)[0]
    print(length)
    data = conn.recv(length)
    if not data: break
    M = pickle.loads(data) # HERE IS AN ERROR, the same as np.loads(...)
    L += M
    data_out = pickle.dumps(L)
    conn.sendall(data_out)
    conn.close()

s.close()

我试过阅读 this, this and this 但没有任何帮助。

我正在使用 Python 3.4.

编辑：

准确的错误是：

File server.py, line 30, in <module>:
M = pickle.loads(data) #HERE IS AN ERROR
EOFError: Ran out of input.

Answer 1

conn.recv(length) 不一定读取 length 字节，如果可用的字节数少于该数目。你需要循环直到你有足够的。

见When does socket.recv(recv_size) return?

data = b''
l = length
while l > 0:
    d = sock.recv(l)
    l -= len(d)
    data += d

在您使用 .send() 的代码中存在类似的问题，尽管在这种情况下有一个简单的解决方法：只需像在其他地方那样使用 .sendall()。

EOFError: ran out of input. Getting this error when trying to pickle.loads from a socket

EOFError: ran out of input. Getting this error when trying to pickle.loads from a socket

python

sockets

numpy

pickle

client.py

server.py