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.\"
.IX Title "..::docs::memcached_servers 3"
.TH ..::docs::memcached_servers 3 "2012-10-24" "" "libmemcached"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
memcached_server_count, memcached_server_list, memcached_server_add, memcached_server_push \- Manage server list
.SH "LIBRARY"
.IX Header "LIBRARY"
C Client Library for memcached (libmemcached, \-lmemcached)
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  #include <memcached.h>
\&
\&  unsigned int memcached_server_count (memcached_st *ptr);
\&
\&  memcached_server_st *
\&    memcached_server_list (memcached_st *ptr);
\&
\&  memcached_return
\&    memcached_server_add (memcached_st *ptr,
\&                          const char *hostname,
\&                          unsigned int port);
\&
\&  memcached_return
\&    memcached_server_add_udp (memcached_st *ptr,
\&                          const char *hostname,
\&                          unsigned int port);
\&
\&  memcached_return
\&    memcached_server_add_unix_socket (memcached_st *ptr,
\&                                      const char *socket);
\&
\&  memcached_return
\&    memcached_server_push (memcached_st *ptr,
\&                           memcached_server_st *list);
\&
\&  memcached_server_st *
\&    memcached_server_by_key (memcached_st *ptr,  
\&                             const char *key, size_t key_length, 
\&                             memcached_return *error);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fIlibmemcached\fR\|(3) performs operations on a list of hosts. The order of these
hosts determine routing to keys. Functions are provided to add keys to
memcached_st structures. To manipulate lists of servers see
\&\fImemcached_server_st\fR\|(3).
.PP
\&\fImemcached_server_count()\fR provides you a count of the current number of
servers being used by a \f(CW\*(C`memcached_st\*(C'\fR structure.
.PP
\&\fImemcached_server_list()\fR is used to provide an array of all defined hosts.
You are responsible for freeing this list (aka it is not a pointer to the
currently used structure).
.PP
\&\fImemcached_server_add()\fR pushes a single \s-1TCP\s0 server into the \f(CW\*(C`memcached_st\*(C'\fR
structure. This server will be placed at the end. Duplicate servers are
allowed, so duplication is not checked. Executing this function with the
\&\f(CW\*(C`MEMCACHED_BEHAVIOR_USE_UDP\*(C'\fR behavior set will result in a 
\&\f(CW\*(C`MEMCACHED_INVALID_HOST_PROTOCOL\*(C'\fR.
.PP
\&\fImemcached_server_add_udp()\fR pushes a single \s-1UDP\s0 server into the \f(CW\*(C`memcached_st\*(C'\fR
structure. This server will be placed at the end. Duplicate servers are
allowed, so duplication is not checked. Executing this function with out
setting the \f(CW\*(C`MEMCACHED_BEHAVIOR_USE_UDP\*(C'\fR behavior will result in a 
\&\f(CW\*(C`MEMCACHED_INVALID_HOST_PROTOCOL\*(C'\fR.
.PP
\&\fImemcached_server_add_unix_socket()\fR pushes a single \s-1UNIX\s0 socket into the 
\&\f(CW\*(C`memcached_st\*(C'\fR structure. This \s-1UNIX\s0 socket will be placed at the end. 
Duplicate servers are allowed, so duplication is not checked. The length
of the filename must be one character less then \s-1MEMCACHED_MAX_HOST_LENGTH\s0.
.PP
\&\fImemcached_server_push()\fR pushes an array of \f(CW\*(C`memcached_server_st\*(C'\fR into
the \f(CW\*(C`memcached_st\*(C'\fR structure. These servers will be placed at the
end. Duplicate servers are allowed, so duplication is not checked. A
copy is made of structure so the list provided (and any operations on
the list) are not saved.
.PP
\&\fImemcached_server_by_key()\fR allows you to provide a key and retrieve the
server which would be used for assignment. This structure is cloned
from its original structure and must be freed. If \s-1NULL\s0 is returned you
should consult *error. The returning structure should be freed with
\&\fImemcached_server_free()\fR.
.SH "RETURN"
.IX Header "RETURN"
Varies, see particular functions.
.SH "HOME"
.IX Header "HOME"
To find out more information please check: 
<http://tangent.org/552/libmemcached.html>
.SH "AUTHOR"
.IX Header "AUTHOR"
Brian Aker, <brian@tangent.org>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fImemcached\fR\|(1) \fIlibmemcached\fR\|(3) \fImemcached_strerror\fR\|(3)