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<title>Berkeley DB: DbEnv::set_rpc_server</title>
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<h1>DbEnv::set_rpc_server</h1>
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#include <db_cxx.h>
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DbEnv::set_rpc_server(CLIENT *client, char *host,
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long cl_timeout, long sv_timeout, u_int32_t flags);
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<p>Establishes a connection for this <b>dbenv</b> to a RPC server. If
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the <b>client</b> argument is NULL, this call creates a connection to
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the Berkeley DB server on the indicated hostname and sets up a channel for
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If the <b>client</b> channel has been provided by the
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application then Berkeley DB will use it as its connection and the <b>host</b> and
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<b>cl_timeout</b> fields are ignored.
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<p>The <b>cl_timeout</b> argument specifies the number of seconds the client
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should wait for results to come back from the server. Once the timeout
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has expired on any communication with the server, DB_NOSERVER will
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be returned. If this value is zero, a default timeout is used.
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<p>The <b>sv_timeout</b> argument specifies the number of seconds the server
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should allow a client connection to remain idle before assuming that the
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client is gone. Once that timeout has been reached, the server releases
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all resources associated with that client connection. Subsequent attempts
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by that client to communicate with the server result in
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DB_NOSERVER_ID, indicating that an invalid identifier has been
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given to the server. This value can be considered a hint to the server.
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The server may alter this value based on its own policies or allowed
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values. If this value is zero, a default timeout is used.
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<p>The <b>flags</b> parameter is currently unused, and must be set to 0.
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<p>When the DbEnv::set_rpc_server method has been called, subsequent calls
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to Berkeley DB library interfaces may return or throw exceptions encapsulating
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<a name="DB_NOSERVER">DB_NOSERVER</a>, <a name="DB_NOSERVER_ID">DB_NOSERVER_ID</a>, or
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<a name="DB_NOSERVER_HOME">DB_NOSERVER_HOME</a>.
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<p>The DbEnv::set_rpc_server method configures operations performed using the specified
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<a href="../api_cxx/env_class.html">DbEnv</a> handle, not all operations performed on the underlying
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<p>The DbEnv::set_rpc_server interface may not be called after the <a href="../api_cxx/env_open.html">DbEnv::open</a>
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<p>The DbEnv::set_rpc_server method either returns a non-zero error value or throws an exception that
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encapsulates a non-zero error value on failure, and returns 0 on success.
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<p>The DbEnv::set_rpc_server method may fail and throw an exception or return a non-zero error for the following conditions:
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<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
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<p>The DbEnv::set_rpc_server method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.
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If a catastrophic error has occurred, the DbEnv::set_rpc_server method may fail and
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either return <a href="../ref/program/errorret.html#DB_RUNRECOVERY">DB_RUNRECOVERY</a> or throw a
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<a href="../api_cxx/runrec_class.html">DbRunRecoveryException</a>,
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in which case all subsequent Berkeley DB calls will fail in the same way.
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<a href="../api_cxx/env_class.html">DbEnv</a>
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<a href="../api_cxx/env_list.html">Database Environments and Related Methods</a>
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