openssl中BIO_pending()和BIO_wpending()有什么区别？
我检查了 Openssl 手册页上的BIO待处理。
无法区分 *_pening 和 *_wpending 之间的区别。 您能分享一下差异吗？
谢谢。
int BIO_pending(BIO *b);
int BIO_wpending(BIO *b);
size_t BIO_ctrl_pending(BIO *b);
size_t BIO_ctrl_wpending(BIO *b);
I checked the BIO pending on Openssl man page.
Failed to get the difference between *_pening and *_wpending.
Could you share the difference.
Thanks.
int BIO_pending(BIO *b);
int BIO_wpending(BIO *b);
size_t BIO_ctrl_pending(BIO *b);
size_t BIO_ctrl_wpending(BIO *b);
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BIO_pending返回 BIO 的“读取”缓冲区中等待的数据量，即已在内部读取但尚未通过BIO_read()返回到应用程序的数据打电话（或类似）。BIO_wpending返回 BIO“写入”缓冲区中等待的数据量，即应用程序通过调用BIO_write（或类似）要求 BIO 写入的内容，但BIO实际上还没有写出来。BIO_pendingreturns the amount of data waiting in the BIO's "read" buffer i.e. stuff that it has already read internally but has not yet been returned to the application via aBIO_read()call (or similar).BIO_wpendingreturns the amount of data waiting in the BIO's "write" buffer, i.e. stuff that the application has asked the BIO to write via a call toBIO_write(or similar), but the BIO hasn't actually written yet.