[python&php 网络编程]socket缓冲区大小设置

1.python

import socket

SEND_BUF_SIZE = 4096
RECV_BUF_SIZE = 4096

def modify_buff_size():
    sock = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
    
    # Get the size of the socket's send buffer
    bufsize = sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF)
    print "Buffer size [Before]:%d" %bufsize
    
    sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, 1)
    sock.setsockopt(
            socket.SOL_SOCKET,
            socket.SO_SNDBUF,
            SEND_BUF_SIZE)
    sock.setsockopt(
            socket.SOL_SOCKET,
            socket.SO_RCVBUF,
            RECV_BUF_SIZE)
    bufsize = sock.getsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF)
    print "Buffer size [After]:%d" %bufsize

if __name__ == '__main__':
    modify_buff_size()

2.php

<?php

$send_buf_size = 4096;
$recv_buf_size = 4096;

function modify_buff_size($send_buf_size, $recv_buf_size){
    $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

    # Get the size of the socket's send buffer
    $bufsize = socket_get_option($socket, SOL_SOCKET, SO_SNDBUF);
    printf("Buffer size [Before]:%d\n", $bufsize);

    $socket.socket_set_option($socket, SOL_SOCKET, TCP_NODELAY, 1);
    $socket.socket_set_option($socket, SOL_SOCKET, SO_SNDBUF, $send_buf_size);
    $socket.socket_set_option($socket, SOL_SOCKET, SO_RCVBUF, $recv_buf_size);
    $bufsize = socket_get_option($socket, SOL_SOCKET, SO_SNDBUF);
    printf("Buffer size [After]:%d\n", $bufsize);
}

modify_buff_size($send_buf_size, $recv_buf_size);

socket的缓冲区太小 则tcp窗口不能完全打开，影响性能，缓冲区太大，则浪费内存，因此缓冲区设置合适大小还是很有必要的

对于socket缓冲区大小的设置 python和php都有类似的方法直接操作~

转载请标注原文地址：http://blog.csdn.net/ddjohn/article/details/49993155