1SSL_SET_RETRY_VERIFY(3ossl)         OpenSSL        SSL_SET_RETRY_VERIFY(3ossl)
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NAME

6       SSL_set_retry_verify - indicate that certificate verification should be
7       retried
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SYNOPSIS

10        #include <openssl/ssl.h>
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12        int SSL_set_retry_verify(SSL *ssl);
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DESCRIPTION

15       SSL_set_retry_verify() should be called from the certificate
16       verification callback on a client when the application wants to
17       indicate that the handshake should be suspended and the control should
18       be returned to the application.  SSL_want_retry_verify(3) will return 1
19       as a consequence until the handshake is resumed again by the
20       application, retrying the verification step.
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22       Please refer to SSL_CTX_set_cert_verify_callback(3) for further
23       details.
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NOTES

26       The effect of calling SSL_set_retry_verify() outside of the certificate
27       verification callback on the client side is undefined.
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RETURN VALUES

30       SSL_set_retry verify() returns 1 on success, 0 otherwise.
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EXAMPLES

33       The following code snippet shows how to obtain the SSL object
34       associated with the X509_STORE_CTX to call the SSL_set_retry_verify()
35       function:
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37           int idx = SSL_get_ex_data_X509_STORE_CTX_idx();
38           SSL *ssl;
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40           /* this should not happen but check anyway */
41           if (idx < 0
42               || (ssl = X509_STORE_CTX_get_ex_data(ctx, idx)) == NULL)
43               return 0;
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45           if (/* we need to retry verification callback */)
46               return SSL_set_retry_verify(ssl);
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48           /* do normal processing of the verification callback */
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SEE ALSO

51       ssl(7), SSL_connect(3), SSL_CTX_set_cert_verify_callback(3),
52       SSL_want_retry_verify(3)
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HISTORY

55       SSL_set_retry_verify() was added in OpenSSL 3.0.2 to replace backwards
56       incompatible handling of a negative return value from the verification
57       callback.
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60       Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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62       Licensed under the Apache License 2.0 (the "License").  You may not use
63       this file except in compliance with the License.  You can obtain a copy
64       in the file LICENSE in the source distribution or at
65       <https://www.openssl.org/source/license.html>.
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693.0.5                             2022-11-01       SSL_SET_RETRY_VERIFY(3ossl)
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