python socket接收数据不完整

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python socket接收数据不完整

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Python Socket API参考出处：

使用socket.recv(pack_length)接收不定长的数据，如果数据包长度超过一定值，则接收的数据不全。

参照python3.4的文档可发现：

socket.recv(bufsize[, flags])Receive data from the socket. The return value is a bytes object representing the data received. The maximum amount of data to be received at once is specified by bufsize.

上述的英文的大体意思为：从socket中接收数据。返回值是byts类型。接收的最大数量的byte为缓冲区大小。

root@iZ94nil6ddfZ:~# cat setsockopt_test.py

#!/usr/bin/python

import socket

SEND_BUF_SIZE = 4096 # 发送缓冲区的大小

RECV_BUF_SIZE = 4096 # 接收缓冲区的大小

def modify_buff_size():

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

bufsize = sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF)

print "Buffer size [Before]: %d" %bufsize

sock.setsockopt(