增加单个 socket.send() 调用中发送的数据量
我们有类似于下面的代码，用于在计算机和远程主机之间创建启用 SSL 的套接字以传输数据。我们注意到每次调用 sock.send 发送的数据量约为 16K。有没有办法配置这个？以16K块的形式发送10MB的数据非常慢，我们可以将块大小配置为1-2MB左右吗？
from OpenSSL import SSL
import socket
''' Create SSL context.
ctx = ...
''' Create SSL enabled socket.
sock = SSL.Connection(ctx, socket.socket(socket.AF_INET, socket.SOCK_STREAM))
''' Connect to the remote host.
sock.connect((host_address, port))
''' msg is a large string about 10 MB.
msg = ...
''' Send data over the socket.
total_sent = 0
while (total_sent < len(msg)):
sent = sock.send(msg[total_sent:])
total_sent += sent
We have code similar to the one below to create an SSL enabled socket between a machine and a remote host to transfer data. We notice that the amount of data sent in each call to sock.send is about 16K. Is there a way to configure this? Send 10 MB of data in 16K chunks is very slow, can we configure the chunk size to about 1-2 MB?
from OpenSSL import SSL
import socket
''' Create SSL context.
ctx = ...
''' Create SSL enabled socket.
sock = SSL.Connection(ctx, socket.socket(socket.AF_INET, socket.SOCK_STREAM))
''' Connect to the remote host.
sock.connect((host_address, port))
''' msg is a large string about 10 MB.
msg = ...
''' Send data over the socket.
total_sent = 0
while (total_sent < len(msg)):
sent = sock.send(msg[total_sent:])
total_sent += sent
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send方法不保证发送所有字节，但sendall方法可以。这将避免字符串切片。The
sendmethod doesn't guarantee to send all the bytes, but thesendallmethod does. That will avoid the string slicing.即使可以做到，将块大小从 16K 增加到 1-2MB 几乎肯定不会对性能产生影响。可能的瓶颈是 TCP/IP 连接的吞吐量（以太网的 MTU 为可能大约 1500 或 9000 字节，所以无论如何，所有内容都会被切成那个大小的片段）。
Even if it can be done, increasing the block size from 16K to 1-2MB will almost certainly have no effect on performance. The likely bottleneck is the throughput of your TCP/IP connection (and the MTU of your Ethernet network is probably around 1500 or 9000 bytes, so everything gets chopped up into pieces of that size anyway).