Remove my local patch again, it was still not meant to be commited.
[dragonfly.git] / secure / lib / libssl / man / SSL_want.3
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34'''
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48''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of
49''' \*(L" and \*(R", except that they are used on ".xx" lines,
50''' such as .IP and .SH, which do another additional levels of
51''' double-quote interpretation
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64.ds -- \(em\|
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80.\" If the F register is turned on, we'll generate
81.\" index entries out stderr for the following things:
82.\" TH Title
83.\" SH Header
84.\" Sh Subsection
85.\" Ip Item
86.\" X<> Xref (embedded
87.\" Of course, you have to process the output yourself
88.\" in some meaninful fashion.
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984263bc 92..
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96.TH SSL_want 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
97.UC
98.if n .hy 0
984263bc 99.if n .na
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109..
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120.\}
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188.\}
189.rm #[ #] #H #V #F C
984263bc 190.SH "NAME"
a7d27d5a 191SSL_want, SSL_want_nothing, SSL_want_read, SSL_want_write, SSL_want_x509_lookup \- obtain state information TLS/SSL I/O operation
984263bc 192.SH "SYNOPSIS"
a7d27d5a 193.PP
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194.Vb 1
195\& #include <openssl/ssl.h>
196.Ve
197.Vb 5
198\& int SSL_want(SSL *ssl);
199\& int SSL_want_nothing(SSL *ssl);
200\& int SSL_want_read(SSL *ssl);
201\& int SSL_want_write(SSL *ssl);
202\& int SSL_want_x509_lookup(SSL *ssl);
203.Ve
204.SH "DESCRIPTION"
a7d27d5a 205\fISSL_want()\fR returns state information for the SSL object \fBssl\fR.
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206.PP
207The other SSL_want_*() calls are shortcuts for the possible states returned
208by \fISSL_want()\fR.
209.SH "NOTES"
a7d27d5a 210\fISSL_want()\fR examines the internal state information of the SSL object. Its
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211return values are similar to that of SSL_get_error(3).
212Unlike SSL_get_error(3), which also evaluates the
213error queue, the results are obtained by examining an internal state flag
214only. The information must therefore only be used for normal operation under
215non-blocking I/O. Error conditions are not handled and must be treated
216using SSL_get_error(3).
217.PP
218The result returned by \fISSL_want()\fR should always be consistent with
219the result of SSL_get_error(3).
220.SH "RETURN VALUES"
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221The following return values can currently occur for \fISSL_want()\fR:
222.Ip "\s-1SSL_NOTHING\s0" 4
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223There is no data to be written or to be read.
224.Ip "\s-1SSL_WRITING\s0" 4
984263bc 225There are data in the \s-1SSL\s0 buffer that must be written to the underlying
a7d27d5a 226\fB\s-1BIO\s0\fR layer in order to complete the actual \s-1SSL_\s0*() operation.
984263bc 227A call to SSL_get_error(3) should return
a7d27d5a 228\s-1SSL_ERROR_WANT_WRITE\s0.
984263bc 229.Ip "\s-1SSL_READING\s0" 4
984263bc 230More data must be read from the underlying \fB\s-1BIO\s0\fR layer in order to
a7d27d5a 231complete the actual \s-1SSL_\s0*() operation.
984263bc 232A call to SSL_get_error(3) should return
a7d27d5a 233\s-1SSL_ERROR_WANT_READ\s0.
984263bc 234.Ip "\s-1SSL_X509_LOOKUP\s0" 4
984263bc 235The operation did not complete because an application callback set by
a7d27d5a 236\fISSL_CTX_set_client_cert_cb()\fR has asked to be called again.
984263bc 237A call to SSL_get_error(3) should return
a7d27d5a 238\s-1SSL_ERROR_WANT_X509_LOOKUP\s0.
984263bc 239.PP
a7d27d5a 240\fISSL_want_nothing()\fR, \fISSL_want_read()\fR, \fISSL_want_write()\fR, \fISSL_want_x509_lookup()\fR
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241return 1, when the corresponding condition is true or 0 otherwise.
242.SH "SEE ALSO"
984263bc 243ssl(3), err(3), SSL_get_error(3)
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244
245.rn }` ''
246.IX Title "SSL_want 3"
247.IX Name "SSL_want, SSL_want_nothing, SSL_want_read, SSL_want_write, SSL_want_x509_lookup - obtain state information TLS/SSL I/O operation"
248
249.IX Header "NAME"
250
251.IX Header "SYNOPSIS"
252
253.IX Header "DESCRIPTION"
254
255.IX Header "NOTES"
256
257.IX Header "RETURN VALUES"
258
259.IX Item "\s-1SSL_NOTHING\s0"
260
261.IX Item "\s-1SSL_WRITING\s0"
262
263.IX Item "\s-1SSL_READING\s0"
264
265.IX Item "\s-1SSL_X509_LOOKUP\s0"
266
267.IX Header "SEE ALSO"
268