socket.setSendBufferSize(size)

• size <integer>

设置 SO_SNDBUF 套接字选项。设置最大套接字发送缓冲区（以字节为单位）。

¥Sets the SO_SNDBUF socket option. Sets the maximum socket send buffer in bytes.

如果在未绑定的套接字上调用此方法将抛出 ERR_SOCKET_BUFFER_SIZE。

¥This method throws ERR_SOCKET_BUFFER_SIZE if called on an unbound socket.