为什么我收到“错误:1409F07F:SSL 例程:SSL3_WRITE_PENDING:写重试错误"?尝试 SSL_write 时出错? [英] Why am I getting "error:1409F07F:SSL routines:SSL3_WRITE_PENDING: bad write retry" error while attempting an SSL_write?

问题描述

我在尝试 SSL_write 时是否收到以下错误:

Am I getting the following error when attempting an SSL_write:

错误:1409F07F:SSL 例程:SSL3_WRITE_PENDING:重试写入错误

error:1409F07F:SSL routines:SSL3_WRITE_PENDING: bad write retry

推荐答案

原因很简单:当 SSL_Write 返回 SSL_ERROR_WANT_WRITE 或 SSL_ERROR_WANT_READ 时，您必须再次使用完全相同的参数再次调用 SSL_write，条件为满意(在套接字上可以读/写).

The reason is pretty simple: when SSL_Write returns with SSL_ERROR_WANT_WRITE or SSL_ERROR_WANT_READ, you have to repeat the call to SSL_write with the EXACT same parameters again, after the condition is satisfied (read/write available on the socket).

使用不同的参数调用它，将产生 1409F07F 错误写入重试错误.

Calling it with different parameters, will yield the 1409F07F bad write retry error.

例如，当 SSL_write(ssl, ptr, size) with ptr = 0xABCDEFGH, size = 4096 因 SSL_ERROR_WANT_READ 或 SSL_ERROR_WANT_WRITE 而失败时，当重试 SSL_write 调用时，参数 ptr 和 size 应该相同.如果 ptr 是另一个指向与原始调用中相同内容的副本的指针，则它是不等价的.

For example, when SSL_write(ssl, ptr, size) with ptr = 0xABCDEFGH, size = 4096 fails with SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE, when retrying the SSL_write call, the parameters ptr and size should be same. It is not equivalent if ptr is another pointer pointing to a copy of the same contents as in the original call.

但是，可以通过设置 SSL_MODE_ENABLE_PARTIAL_WRITE 和/或 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER 来更改 SSL_write 的默认行为.

However this default behavior of SSL_write can be changed by setting SSL_MODE_ENABLE_PARTIAL_WRITE and/or SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER.

感谢@ShriramV 的澄清评论，并整合到答案中

Thanks for @ShriramV for the clarifying comments, integrated to the answer

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