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Asked: 2026-05-15T17:53:43+00:00

Fairly new to socket programming, but I’ve been assigned with a whopper of project.

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Fairly new to socket programming, but I’ve been assigned with a whopper of project.

My issue is this: I try initiating an SSL handshake with both SSL_accept() and SSL_connect(), as well as renegotiating the handshake and then attempting to reconnect with SSL_renegotiate() and SSL_do_handshake() in succession, but all of these give me the error of BIO routines:BIO_write:unsupported method

Before making any calls, I make sure to set my BIO and initialize all SSL libraries.

The BIO and SSL pointers are not null during the time of execution.

Any ideas?

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1 Answer

  1. Editorial Team

    It is hard to tell without seeing any code but the error ‘unsupported method’ means that you are problably trying to call a function with the wrong BIO as parameter. In other words, you cannot call BIO_write with an accept BIO (one created with, eg, a call to BIO_new_accept()). An accept BIO is for, well, accepting connections.

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