327 lines
12 KiB
Plaintext
327 lines
12 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "OPENSSL-S_TIME 1ossl"
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.TH OPENSSL-S_TIME 1ossl "2024-03-21" "3.2.1" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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openssl\-s_time \- SSL/TLS performance timing program
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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\&\fBopenssl\fR \fBs_time\fR
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[\fB\-help\fR]
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[\fB\-connect\fR \fIhost\fR:\fIport\fR]
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[\fB\-www\fR \fIpage\fR]
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[\fB\-cert\fR \fIfilename\fR]
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[\fB\-key\fR \fIfilename\fR]
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[\fB\-reuse\fR]
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[\fB\-new\fR]
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[\fB\-verify\fR \fIdepth\fR]
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[\fB\-time\fR \fIseconds\fR]
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[\fB\-ssl3\fR]
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[\fB\-tls1\fR]
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[\fB\-tls1_1\fR]
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[\fB\-tls1_2\fR]
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[\fB\-tls1_3\fR]
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[\fB\-bugs\fR]
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[\fB\-cipher\fR \fIcipherlist\fR]
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[\fB\-ciphersuites\fR \fIval\fR]
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[\fB\-nameopt\fR \fIoption\fR]
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[\fB\-cafile\fR \fIfile\fR]
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[\fB\-CAfile\fR \fIfile\fR]
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[\fB\-no\-CAfile\fR]
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[\fB\-CApath\fR \fIdir\fR]
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[\fB\-no\-CApath\fR]
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[\fB\-CAstore\fR \fIuri\fR]
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[\fB\-no\-CAstore\fR]
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[\fB\-provider\fR \fIname\fR]
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[\fB\-provider\-path\fR \fIpath\fR]
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[\fB\-propquery\fR \fIpropq\fR]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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This command implements a generic \s-1SSL/TLS\s0 client which
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connects to a remote host using \s-1SSL/TLS.\s0 It can request a page from the server
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and includes the time to transfer the payload data in its timing measurements.
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It measures the number of connections within a given timeframe, the amount of
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data transferred (if any), and calculates the average time spent for one
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connection.
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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.IP "\fB\-help\fR" 4
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.IX Item "-help"
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Print out a usage message.
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.IP "\fB\-connect\fR \fIhost\fR:\fIport\fR" 4
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.IX Item "-connect host:port"
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This specifies the host and optional port to connect to.
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.IP "\fB\-www\fR \fIpage\fR" 4
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.IX Item "-www page"
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This specifies the page to \s-1GET\s0 from the server. A value of '/' gets the
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\&\fIindex.html\fR page. If this parameter is not specified, then this command
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will only perform the handshake to establish \s-1SSL\s0 connections but not transfer
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any payload data.
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.IP "\fB\-cert\fR \fIcertname\fR" 4
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.IX Item "-cert certname"
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The certificate to use, if one is requested by the server. The default is
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not to use a certificate. The file is in \s-1PEM\s0 format.
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.IP "\fB\-key\fR \fIkeyfile\fR" 4
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.IX Item "-key keyfile"
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The private key to use. If not specified then the certificate file will
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be used. The file is in \s-1PEM\s0 format.
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.IP "\fB\-verify\fR \fIdepth\fR" 4
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.IX Item "-verify depth"
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The verify depth to use. This specifies the maximum length of the
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server certificate chain and turns on server certificate verification.
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Currently the verify operation continues after errors so all the problems
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with a certificate chain can be seen. As a side effect the connection
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will never fail due to a server certificate verify failure.
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.IP "\fB\-new\fR" 4
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.IX Item "-new"
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Performs the timing test using a new session \s-1ID\s0 for each connection.
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If neither \fB\-new\fR nor \fB\-reuse\fR are specified, they are both on by default
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and executed in sequence.
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.IP "\fB\-reuse\fR" 4
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.IX Item "-reuse"
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Performs the timing test using the same session \s-1ID\s0; this can be used as a test
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that session caching is working. If neither \fB\-new\fR nor \fB\-reuse\fR are
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specified, they are both on by default and executed in sequence.
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.IP "\fB\-bugs\fR" 4
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.IX Item "-bugs"
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There are several known bugs in \s-1SSL\s0 and \s-1TLS\s0 implementations. Adding this
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option enables various workarounds.
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.IP "\fB\-cipher\fR \fIcipherlist\fR" 4
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.IX Item "-cipher cipherlist"
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This allows the TLSv1.2 and below cipher list sent by the client to be modified.
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This list will be combined with any TLSv1.3 ciphersuites that have been
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configured. Although the server determines which cipher suite is used it should
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take the first supported cipher in the list sent by the client. See
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\&\fIopenssl\-ciphers\fR\|(1) for more information.
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.IP "\fB\-ciphersuites\fR \fIval\fR" 4
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.IX Item "-ciphersuites val"
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This allows the TLSv1.3 ciphersuites sent by the client to be modified. This
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list will be combined with any TLSv1.2 and below ciphersuites that have been
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configured. Although the server determines which cipher suite is used it should
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take the first supported cipher in the list sent by the client. See
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\&\fIopenssl\-ciphers\fR\|(1) for more information. The format for this list is a
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simple colon (\*(L":\*(R") separated list of TLSv1.3 ciphersuite names.
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.IP "\fB\-time\fR \fIlength\fR" 4
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.IX Item "-time length"
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Specifies how long (in seconds) this command should establish connections
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and optionally transfer payload data from a server. Server and client
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performance and the link speed determine how many connections it
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can establish.
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.IP "\fB\-nameopt\fR \fIoption\fR" 4
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.IX Item "-nameopt option"
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This specifies how the subject or issuer names are displayed.
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See \fIopenssl\-namedisplay\-options\fR\|(1) for details.
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.IP "\fB\-CAfile\fR \fIfile\fR, \fB\-no\-CAfile\fR, \fB\-CApath\fR \fIdir\fR, \fB\-no\-CApath\fR, \fB\-CAstore\fR \fIuri\fR, \fB\-no\-CAstore\fR" 4
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.IX Item "-CAfile file, -no-CAfile, -CApath dir, -no-CApath, -CAstore uri, -no-CAstore"
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See \*(L"Trusted Certificate Options\*(R" in \fIopenssl\-verification\-options\fR\|(1) for details.
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.IP "\fB\-provider\fR \fIname\fR" 4
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.IX Item "-provider name"
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.PD 0
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.IP "\fB\-provider\-path\fR \fIpath\fR" 4
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.IX Item "-provider-path path"
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.IP "\fB\-propquery\fR \fIpropq\fR" 4
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.IX Item "-propquery propq"
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.PD
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See \*(L"Provider Options\*(R" in \fIopenssl\fR\|(1), \fIprovider\fR\|(7), and \fIproperty\fR\|(7).
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.IP "\fB\-cafile\fR \fIfile\fR" 4
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.IX Item "-cafile file"
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This is an obsolete synonym for \fB\-CAfile\fR.
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.IP "\fB\-ssl3\fR, \fB\-tls1\fR, \fB\-tls1_1\fR, \fB\-tls1_2\fR, \fB\-tls1_3\fR" 4
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.IX Item "-ssl3, -tls1, -tls1_1, -tls1_2, -tls1_3"
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See \*(L"\s-1TLS\s0 Version Options\*(R" in \fIopenssl\fR\|(1).
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.SH "NOTES"
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.IX Header "NOTES"
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This command can be used to measure the performance of an \s-1SSL\s0 connection.
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To connect to an \s-1SSL HTTP\s0 server and get the default page the command
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.PP
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.Vb 1
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\& openssl s_time \-connect servername:443 \-www / \-CApath yourdir \-CAfile yourfile.pem \-cipher commoncipher [\-ssl3]
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.Ve
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.PP
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would typically be used (https uses port 443). \fIcommoncipher\fR is a cipher to
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which both client and server can agree, see the \fIopenssl\-ciphers\fR\|(1) command
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for details.
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.PP
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If the handshake fails then there are several possible causes, if it is
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nothing obvious like no client certificate then the \fB\-bugs\fR and
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\&\fB\-ssl3\fR options can be tried
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in case it is a buggy server. In particular you should play with these
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options \fBbefore\fR submitting a bug report to an OpenSSL mailing list.
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.PP
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A frequent problem when attempting to get client certificates working
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is that a web client complains it has no certificates or gives an empty
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list to choose from. This is normally because the server is not sending
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the clients certificate authority in its \*(L"acceptable \s-1CA\s0 list\*(R" when it
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requests a certificate. By using \fIopenssl\-s_client\fR\|(1) the \s-1CA\s0 list can be
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viewed and checked. However, some servers only request client authentication
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after a specific \s-1URL\s0 is requested. To obtain the list in this case it
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is necessary to use the \fB\-prexit\fR option of \fIopenssl\-s_client\fR\|(1) and
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send an \s-1HTTP\s0 request for an appropriate page.
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.PP
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If a certificate is specified on the command line using the \fB\-cert\fR
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option it will not be used unless the server specifically requests
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a client certificate. Therefore, merely including a client certificate
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on the command line is no guarantee that the certificate works.
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.SH "BUGS"
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.IX Header "BUGS"
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Because this program does not have all the options of the
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\&\fIopenssl\-s_client\fR\|(1) program to turn protocols on and off, you may not
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be able to measure the performance of all protocols with all servers.
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.PP
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The \fB\-verify\fR option should really exit if the server verification
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fails.
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.SH "HISTORY"
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.IX Header "HISTORY"
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The \fB\-cafile\fR option was deprecated in OpenSSL 3.0.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIopenssl\fR\|(1),
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\&\fIopenssl\-s_client\fR\|(1),
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\&\fIopenssl\-s_server\fR\|(1),
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\&\fIopenssl\-ciphers\fR\|(1),
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\&\fIossl_store\-file\fR\|(7)
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2004\-2021 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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