Add Doxygen documentation for public API.

4 files changed, 283 insertions, 49 deletions

diff --git a/lib/Doxyfile b/lib/Doxyfile
index ee7476e..9c79d20 100644
--- a/lib/Doxyfile
+++ b/lib/Doxyfile
@@ -1,4 +1,4 @@
-# Doxyfile 1.6.3
+# Doxyfile 1.7.1
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project
@@ -38,7 +38,7 @@ PROJECT_NUMBER         =
 # If a relative path is entered, it will be relative to the location
 # where doxygen was started. If left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = doc
+OUTPUT_DIRECTORY       = doxy
 
 # If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
 # 4096 sub-directories (in 2 levels) under the output directory of each output
@@ -207,14 +207,15 @@ OPTIMIZE_FOR_FORTRAN   = NO
 
 OPTIMIZE_OUTPUT_VHDL   = NO
 
-# Doxygen selects the parser to use depending on the extension of the files it parses.
-# With this tag you can assign which parser to use for a given extension.
-# Doxygen has a built-in mapping, but you can override or extend it using this tag.
-# The format is ext=language, where ext is a file extension, and language is one of
-# the parsers supported by doxygen: IDL, Java, Javascript, C#, C, C++, D, PHP,
-# Objective-C, Python, Fortran, VHDL, C, C++. For instance to make doxygen treat
-# .inc files as Fortran files (default is PHP), and .f files as C (default is Fortran),
-# use: inc=Fortran f=C. Note that for custom extensions you also need to set FILE_PATTERNS otherwise the files are not read by doxygen.
+# Doxygen selects the parser to use depending on the extension of the files it
+# parses. With this tag you can assign which parser to use for a given extension.
+# Doxygen has a built-in mapping, but you can override or extend it using this
+# tag. The format is ext=language, where ext is a file extension, and language
+# is one of the parsers supported by doxygen: IDL, Java, Javascript, CSharp, C,
+# C++, D, PHP, Objective-C, Python, Fortran, VHDL, C, C++. For instance to make
+# doxygen treat .inc files as Fortran files (default is PHP), and .f files as C
+# (default is Fortran), use: inc=Fortran f=C. Note that for custom extensions
+# you also need to set FILE_PATTERNS otherwise the files are not read by doxygen.
 
 EXTENSION_MAPPING      =
 
@@ -411,7 +412,13 @@ SORT_MEMBER_DOCS       = YES
 
 SORT_BRIEF_DOCS        = NO
 
-# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen will sort the (brief and detailed) documentation of class members so that constructors and destructors are listed first. If set to NO (the default) the constructors will appear in the respective orders defined by SORT_MEMBER_DOCS and SORT_BRIEF_DOCS. This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
+# If the SORT_MEMBERS_CTORS_1ST tag is set to YES then doxygen
+# will sort the (brief and detailed) documentation of class members so that
+# constructors and destructors are listed first. If set to NO (the default)
+# the constructors will appear in the respective orders defined by
+# SORT_MEMBER_DOCS and SORT_BRIEF_DOCS.
+# This tag will be ignored for brief docs if SORT_BRIEF_DOCS is set to NO
+# and ignored for detailed docs if SORT_MEMBER_DOCS is set to NO.
 
 SORT_MEMBERS_CTORS_1ST = NO
 
@@ -505,12 +512,12 @@ SHOW_NAMESPACES        = YES
 
 FILE_VERSION_FILTER    =
 
-# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed by
-# doxygen. The layout file controls the global structure of the generated output files
-# in an output format independent way. The create the layout file that represents
-# doxygen's defaults, run doxygen with the -l option. You can optionally specify a
-# file name after the option, if omitted DoxygenLayout.xml will be used as the name
-# of the layout file.
+# The LAYOUT_FILE tag can be used to specify a layout file which will be parsed
+# by doxygen. The layout file controls the global structure of the generated
+# output files in an output format independent way. The create the layout file
+# that represents doxygen's defaults, run doxygen with the -l option.
+# You can optionally specify a file name after the option, if omitted
+# DoxygenLayout.xml will be used as the name of the layout file.
 
 LAYOUT_FILE            =
 
@@ -533,7 +540,7 @@ WARNINGS               = YES
 # for undocumented members. If EXTRACT_ALL is set to YES then this flag will
 # automatically be disabled.
 
-WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_UNDOCUMENTED   = YES
 
 # If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
 # potential errors in the documentation, such as not documenting some
@@ -574,7 +581,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories
 # with spaces.
 
-INPUT                  = .
+INPUT                  = include/radsec/radsec.h include/radsec/request.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is
@@ -591,7 +598,7 @@ INPUT_ENCODING         = UTF-8
 # *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
 # *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py *.f90
 
-FILE_PATTERNS          =
+FILE_PATTERNS          = *.c *.h
 
 # The RECURSIVE tag can be used to turn specify whether or not subdirectories
 # should be searched for input files as well. Possible values are YES and NO.
@@ -745,7 +752,7 @@ VERBATIM_HEADERS       = YES
 # of all compounds will be generated. Enable this if the project
 # contains a lot of classes, structs, unions or interfaces.
 
-ALPHABETICAL_INDEX     = NO
+ALPHABETICAL_INDEX     = YES
 
 # If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
 # the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
@@ -802,6 +809,31 @@ HTML_FOOTER            =
 
 HTML_STYLESHEET        =
 
+# The HTML_COLORSTYLE_HUE tag controls the color of the HTML output.
+# Doxygen will adjust the colors in the stylesheet and background images
+# according to this color. Hue is specified as an angle on a colorwheel,
+# see http://en.wikipedia.org/wiki/Hue for more information.
+# For instance the value 0 represents red, 60 is yellow, 120 is green,
+# 180 is cyan, 240 is blue, 300 purple, and 360 is red again.
+# The allowed range is 0 to 359.
+
+HTML_COLORSTYLE_HUE    = 220
+
+# The HTML_COLORSTYLE_SAT tag controls the purity (or saturation) of
+# the colors in the HTML output. For a value of 0 the output will use
+# grayscales only. A value of 255 will produce the most vivid colors.
+
+HTML_COLORSTYLE_SAT    = 100
+
+# The HTML_COLORSTYLE_GAMMA tag controls the gamma correction applied to
+# the luminance component of the colors in the HTML output. Values below
+# 100 gradually make the output lighter, whereas values above 100 make
+# the output darker. The value divided by 100 is the actual gamma applied,
+# so 80 represents a gamma of 0.8, The value 220 represents a gamma of 2.2,
+# and 100 does not change the gamma.
+
+HTML_COLORSTYLE_GAMMA  = 80
+
 # If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
 # page will contain the date and time when the page was generated. Setting
 # this to NO can help when comparing the output of multiple runs.
@@ -830,7 +862,8 @@ HTML_DYNAMIC_SECTIONS  = NO
 # directory and running "make install" will install the docset in
 # ~/Library/Developer/Shared/Documentation/DocSets so that Xcode will find
 # it at startup.
-# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html for more information.
+# See http://developer.apple.com/tools/creatingdocsetswithdoxygen.html
+# for more information.
 
 GENERATE_DOCSET        = NO
 
@@ -848,6 +881,16 @@ DOCSET_FEEDNAME        = "Doxygen generated docs"
 
 DOCSET_BUNDLE_ID       = org.doxygen.Project
 
+# When GENERATE_PUBLISHER_ID tag specifies a string that should uniquely identify
+# the documentation publisher. This should be a reverse domain-name style
+# string, e.g. com.mycompany.MyDocSet.documentation.
+
+DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
+
+# The GENERATE_PUBLISHER_NAME tag identifies the documentation publisher.
+
+DOCSET_PUBLISHER_NAME  = Publisher
+
 # If the GENERATE_HTMLHELP tag is set to YES, additional index files
 # will be generated that can be used as input for tools like the
 # Microsoft HTML help workshop to generate a compiled HTML help file (.chm)
@@ -892,10 +935,10 @@ BINARY_TOC             = NO
 
 TOC_EXPAND             = NO
 
-# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and QHP_VIRTUAL_FOLDER
-# are set, an additional index file will be generated that can be used as input for
-# Qt's qhelpgenerator to generate a Qt Compressed Help (.qch) of the generated
-# HTML documentation.
+# If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and
+# QHP_VIRTUAL_FOLDER are set, an additional index file will be generated
+# that can be used as input for Qt's qhelpgenerator to generate a
+# Qt Compressed Help (.qch) of the generated HTML documentation.
 
 GENERATE_QHP           = NO
 
@@ -917,20 +960,24 @@ QHP_NAMESPACE          = org.doxygen.Project
 
 QHP_VIRTUAL_FOLDER     = doc
 
-# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to add.
-# For more information please see
+# If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to
+# add. For more information please see
 # http://doc.trolltech.com/qthelpproject.html#custom-filters
 
 QHP_CUST_FILTER_NAME   =
 
-# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the custom filter to add.For more information please see
-# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">Qt Help Project / Custom Filters</a>.
+# The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the
+# custom filter to add. For more information please see
+# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters">
+# Qt Help Project / Custom Filters</a>.
 
 QHP_CUST_FILTER_ATTRS  =
 
-# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this project's
+# The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
+# project's
 # filter section matches.
-# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">Qt Help Project / Filter Attributes</a>.
+# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes">
+# Qt Help Project / Filter Attributes</a>.
 
 QHP_SECT_FILTER_ATTRS  =
 
@@ -943,11 +990,12 @@ QHG_LOCATION           =
 
 # If the GENERATE_ECLIPSEHELP tag is set to YES, additional index files
 #  will be generated, which together with the HTML files, form an Eclipse help
-#  plugin. To install this plugin and make it available under the help contents
+# plugin. To install this plugin and make it available under the help contents
 # menu in Eclipse, the contents of the directory containing the HTML and XML
 # files needs to be copied into the plugins directory of eclipse. The name of
 # the directory within the plugins directory should be the same as
-# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before the help appears.
+# the ECLIPSE_DOC_ID value. After copying Eclipse needs to be restarted before
+# the help appears.
 
 GENERATE_ECLIPSEHELP   = NO
 
@@ -989,6 +1037,11 @@ USE_INLINE_TREES       = NO
 
 TREEVIEW_WIDTH         = 250
 
+# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open
+# links to external symbols imported via tag files in a separate window.
+
+EXT_LINKS_IN_WINDOW    = NO
+
 # Use this tag to change the font size of Latex formulas included
 # as images in the HTML documentation. The default is 10. Note that
 # when you change the font size after a successful doxygen run you need
@@ -997,15 +1050,30 @@ TREEVIEW_WIDTH         = 250
 
 FORMULA_FONTSIZE       = 10
 
-# When the SEARCHENGINE tag is enabled doxygen will generate a search box for the HTML output. The underlying search engine uses javascript
-# and DHTML and should work on any modern browser. Note that when using HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets (GENERATE_DOCSET) there is already a search function so this one should
+# Use the FORMULA_TRANPARENT tag to determine whether or not the images
+# generated for formulas are transparent PNGs. Transparent PNGs are
+# not supported properly for IE 6.0, but are supported on all modern browsers.
+# Note that when changing this option you need to delete any form_*.png files
+# in the HTML output before the changes have effect.
+
+FORMULA_TRANSPARENT    = YES
+
+# When the SEARCHENGINE tag is enabled doxygen will generate a search box
+# for the HTML output. The underlying search engine uses javascript
+# and DHTML and should work on any modern browser. Note that when using
+# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets
+# (GENERATE_DOCSET) there is already a search function so this one should
 # typically be disabled. For large projects the javascript based search engine
 # can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.
 
 SEARCHENGINE           = YES
 
-# When the SERVER_BASED_SEARCH tag is enabled the search engine will be implemented using a PHP enabled web server instead of at the web client using Javascript. Doxygen will generate the search PHP script and index
-# file to put on the web server. The advantage of the server based approach is that it scales better to large projects and allows full text search. The disadvances is that it is more difficult to setup
+# When the SERVER_BASED_SEARCH tag is enabled the search engine will be
+# implemented using a PHP enabled web server instead of at the web client
+# using Javascript. Doxygen will generate the search PHP script and index
+# file to put on the web server. The advantage of the server
+# based approach is that it scales better to large projects and allows
+# full text search. The disadvances is that it is more difficult to setup
 # and does not have live searching capabilities.
 
 SERVER_BASED_SEARCH    = NO
@@ -1089,7 +1157,10 @@ LATEX_BATCHMODE        = NO
 
 LATEX_HIDE_INDICES     = NO
 
-# If LATEX_SOURCE_CODE is set to YES then doxygen will include source code with syntax highlighting in the LaTeX output. Note that which sources are shown also depends on other settings such as SOURCE_BROWSER.
+# If LATEX_SOURCE_CODE is set to YES then doxygen will include
+# source code with syntax highlighting in the LaTeX output.
+# Note that which sources are shown also depends on other settings
+# such as SOURCE_BROWSER.
 
 LATEX_SOURCE_CODE      = NO
 
@@ -1391,6 +1462,14 @@ HIDE_UNDOC_RELATIONS   = YES
 
 HAVE_DOT               = NO
 
+# The DOT_NUM_THREADS specifies the number of dot invocations doxygen is
+# allowed to run in parallel. When set to 0 (the default) doxygen will
+# base this on the number of processors available in the system. You can set it
+# explicitly to a value larger than 0 to get control over the balance
+# between CPU load and processing speed.
+
+DOT_NUM_THREADS        = 0
+
 # By default doxygen will write a font called FreeSans.ttf to the output
 # directory and reference it in all dot files that doxygen generates. This
 # font does not include all possible unicode characters however, so when you need
@@ -1400,7 +1479,7 @@ HAVE_DOT               = NO
 # DOTFONTPATH environment variable or by setting DOT_FONTPATH to the directory
 # containing the font.
 
-DOT_FONTNAME           = FreeSans
+DOT_FONTNAME           = FreeSans.ttf
 
 # The DOT_FONTSIZE tag can be used to set the size of the font of dot graphs.
 # The default size is 10pt.
diff --git a/lib/include/radsec/radsec.h b/lib/include/radsec/radsec.h
index 971fc17..66c55f3 100644
--- a/lib/include/radsec/radsec.h
+++ b/lib/include/radsec/radsec.h
@@ -1,5 +1,6 @@
-/** @file libradsec.h
-    @brief Header file for libradsec.  */
+/** \file radsec.h
+    \brief Public interface for libradsec.  */
+
 /* See the file COPYING for licensing information.  */
 
 #include <unistd.h>
@@ -83,70 +84,197 @@ struct rs_conn_callbacks {
 
 
 /* Function prototypes.  */
+
+/*************/
 /* Context.  */
+/*************/
+/** Create a context.  Freed by calling \a rs_context_destroy.  Note
+    that the context must not be freed before all other libradsec
+    objects have been freed.
+
+    \a ctx Address of pointer to a struct rs_context.  This is the output.
+
+    \a dict Name of a FreeRADIUS dictionary.
+
+    \return RSE_OK (0) on success, RSE_NOMEM on out of memory or
+    RSE_FR on FreeRADIUS initialization error.  */
 int rs_context_create(struct rs_context **ctx, const char *dict);
+
+/** Free a context.  Note that the context must not be freed before
+    all other libradsec objects have been freed.  */
 void rs_context_destroy(struct rs_context *ctx);
+
+/** Set allocation scheme to use.  \a scheme is the allocation scheme
+    to use, see \a rs_alloc_scheme.  \return On success, RSE_OK (0) is
+    returned.  On error, !0 is returned and a struct \a rs_error is
+    pushed on the error stack for the context.  The error can be
+    accessed using \a rs_err_ctx_pop.  */
 int rs_context_set_alloc_scheme(struct rs_context *ctx,
 				struct rs_alloc_scheme *scheme);
+
+/** Read configuration file. \a config_file is the path of the
+    configuration file to read.  \return On success, RSE_OK (0) is
+    returned.  On error, !0 is returned and a struct \a rs_error is
+    pushed on the error stack for the context.  The error can be
+    accessed using \a rs_err_ctx_pop.  */
 int rs_context_read_config(struct rs_context *ctx, const char *config_file);
 
+/****************/
 /* Connection.  */
+/****************/
+/** Create a connection.  \a conn is the address of a pointer to an \a
+    rs_connection, the output.  Free the connection using \a
+    rs_conn_destroy.  Note that a connection must not be freed before
+    all packets associated with the connection have been freed.  A
+    packet is associated with a connection when it's created (\a
+    rs_packet_create) or received (\a rs_conn_receive_packet).
+
+    If \a config is not NULL it should be the name of a configuration
+    found in the config file read in using \a rs_context_read_config.
+    \return On success, RSE_OK (0) is returned.  On error, !0 is
+    returned and a struct \a rs_error is pushed on the error stack for
+    the context.  The error can be accessed using \a
+    rs_err_ctx_pop.  */
 int rs_conn_create(struct rs_context *ctx,
 		   struct rs_connection **conn,
 		   const char *config);
-void rs_conn_set_type(struct rs_connection *conn, rs_conn_type_t type);
+
+/** Not implemented.  */
 int rs_conn_add_listener(struct rs_connection *conn,
 			 rs_conn_type_t type,
 			 const char *hostname,
 			 int port);
+/** Disconnect connection \a conn.  \return RSE_OK (0) on success, !0
+ * on error.  On error, errno is set appropriately.  */
 int rs_conn_disconnect (struct rs_connection *conn);
+
+/** Disconnect and free memory allocated for connection \a conn.  Note
+    that a connection must not be freed before all packets associated
+    with the connection have been freed.  A packet is associated with
+    a connection when it's created (\a rs_packet_create) or received
+    (\a rs_conn_receive_packet).  \return RSE_OK (0) on success, !0 *
+    on error.  On error, errno is set appropriately. */
 int rs_conn_destroy(struct rs_connection *conn);
+
+/** Set connection type for \a conn.  */
+void rs_conn_set_type(struct rs_connection *conn, rs_conn_type_t type);
+
+/** Not implemented.  */
 int rs_conn_set_eventbase(struct rs_connection *conn, struct event_base *eb);
+
+/** Register callbacks \a cb for connection \a conn.  */
 void rs_conn_set_callbacks(struct rs_connection *conn,
 			   struct rs_conn_callbacks *cb);
+
+/** Remove callbacks for connection \a conn.  */
 void rs_conn_del_callbacks(struct rs_connection *conn);
+
+/** Return callbacks registered for connection \a conn.  \return
+    Installed callbacks are returned.  */
 struct rs_conn_callbacks *rs_conn_get_callbacks(struct rs_connection *conn);
+
+/** Not implemented.  */
 int rs_conn_select_peer(struct rs_connection *conn, const char *name);
+
+/** Not implemented.  */
 int rs_conn_get_current_peer(struct rs_connection *conn,
 			     const char *name,
 			     size_t buflen);
+
+/** Special function used in blocking mode, i.e. with no callbacks
+    registered.  For any other use of libradsec, a \a received_cb
+    callback should be registered using \a rs_conn_set_callbacks.
+
+    If \a req_msg is not NULL, a successfully received RADIUS message
+    is verified against it.  If \a pkt_out is not NULL it will upon
+    return contain a pointer to an \a rs_packet containing the new
+    message.
+
+    \return On error or if the connect (TCP only) or read times out,
+    \a pkt_out will not be changed and one or more errors are pushed
+    on \a conn (available through \a rs_err_conn_pop).  */
 int rs_conn_receive_packet(struct rs_connection *conn,
 			   struct rs_packet *request,
 			   struct rs_packet **pkt_out);
+
+/** Get the file descriptor associated with connection \a conn.
+ * \return File descriptor.  */
 int rs_conn_fd(struct rs_connection *conn);
+
+/** Set the timeout value for connection \a conn.  */
 void rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv);
 
 /* Peer -- client and server.  */
 int rs_peer_create(struct rs_connection *conn, struct rs_peer **peer_out);
-int rs_peer_set_address(struct rs_peer *peer, const char *hostname,
+int rs_peer_set_address(struct rs_peer *peer,
+			const char *hostname,
 			const char *service);
 int rs_peer_set_secret(struct rs_peer *peer, const char *secret);
 void rs_peer_set_timeout(struct rs_peer *peer, int timeout);
 void rs_peer_set_retries(struct rs_peer *peer, int retries);
 
+/************/
 /* Packet.  */
+/************/
+/** Create a packet associated with connection \a conn.  */
 int rs_packet_create(struct rs_connection *conn, struct rs_packet **pkt_out);
+
+/** Free all memory allocated for packet \a pkt.  */
 void rs_packet_destroy(struct rs_packet *pkt);
+
+/** Add attribute \a attr to packet \a pkt.  */
 void rs_packet_add_attr(struct rs_packet *pkt, struct rs_attr *attr);
+
+/** Send packet \a pkt on the connection associated with \a pkt.  \a
+    user_data is sent to the \a rs_conn_packet_received_cb callback
+    registered with the connection.  If no callback is registered with
+    the connection, the event loop is run by \a rs_packet_send and it
+    blocks until the packet has been succesfully sent.
+
+    \return On success, RSE_OK (0) is returned.  On error, !0 is
+    returned and a struct \a rs_error is pushed on the error stack for
+    the connection.  The error can be accessed using \a
+    rs_err_conn_pop.  */
 int rs_packet_send(struct rs_packet *pkt, void *user_data);
+
+/** Return the FreeRADIUS packet associated with packet \a pkt.  */
 struct radius_packet *rs_packet_frpkt(struct rs_packet *pkt);
+
+/** Create a RADIUS authentication request packet associated with
+    connection \a conn.  Optionally, User-Name and User-Password
+    attributes are added to the packet using the data in \a user_name
+    and \a user_pw.  */
 int rs_packet_create_authn_request(struct rs_connection *conn,
 				   struct rs_packet **pkt,
 				   const char *user_name,
 				   const char *user_pw);
 
+/***************/
 /* Attribute.  */
+/***************/
 /* FIXME: Replace (or complement) with a wrapper for paircreate().  */
+/** Create a RADIUS attribute of type \a type and with the value \a
+    val.  */
 int rs_attr_create(struct rs_connection *conn,
 		   struct rs_attr **attr,
 		   const char *type,
 		   const char *val);
+/** Free memory for RADIUS attribute \a attr.  */
 void rs_attr_destroy(struct rs_attr *attr);
 
+/************/
 /* Config.  */
+/************/
+/** Find the realm named \a name in the configuration file previoiusly
+    read in using \a rs_context_read_config.  */
 struct rs_realm *rs_conf_find_realm(struct rs_context *ctx, const char *name);
 
+/***********/
 /* Error.  */
+/***********/
+/** Create a struct \a rs_error and push it on a FIFO associated with
+    context \a ctx.  Note: The depth of the error stack is one (1) at
+    the moment.  This will change in a future release.  */
 int rs_err_ctx_push(struct rs_context *ctx, int code, const char *fmt, ...);
 int rs_err_ctx_push_fl(struct rs_context *ctx,
 		       int code,
@@ -154,7 +282,13 @@ int rs_err_ctx_push_fl(struct rs_context *ctx,
 		       int line,
 		       const char *fmt,
 		       ...);
+/** Pop the first error from the error FIFO associated with context \a
+    ctx or NULL if there are no errors in the FIFO.  */
 struct rs_error *rs_err_ctx_pop(struct rs_context *ctx);
+
+/** Create a struct \a rs_error and push it on a FIFO associated with
+    connection \a conn.  Note: The depth of the error stack is one (1)
+    at the moment.  This will change in a future release.  */
 int rs_err_conn_push(struct rs_connection *conn,
 		     int code,
 		     const char *fmt,
@@ -165,7 +299,10 @@ int rs_err_conn_push_fl(struct rs_connection *conn,
 			int line,
 			const char *fmt,
 			...);
+/** Pop the first error from the error FIFO associated with connection
+    \a conn or NULL if there are no errors in the FIFO.  */
 struct rs_error *rs_err_conn_pop(struct rs_connection *conn);
+
 int rs_err_conn_peek_code (struct rs_connection *conn);
 void rs_err_free(struct rs_error *err);
 char *rs_err_msg(struct rs_error *err);
diff --git a/lib/include/radsec/request.h b/lib/include/radsec/request.h
index 4a540bd..ef422b5 100644
--- a/lib/include/radsec/request.h
+++ b/lib/include/radsec/request.h
@@ -1,3 +1,6 @@
+/** \file request.h
+    \brief Public interface for libradsec request's.  */
+
 /* See the file COPYING for licensing information.  */
 
 struct rs_request;
@@ -6,15 +9,30 @@ struct rs_request;
 extern "C" {
 #endif
 
+/** Create a request associated with connection \a conn.  */
 int rs_request_create(struct rs_connection *conn, struct rs_request **req_out);
-void rs_request_add_reqpkt(struct rs_request *req, struct rs_packet *reqpkt);
+/** Add RADIUS request message \a req_msg to request \a req.  */
+void rs_request_add_reqpkt(struct rs_request *req, struct rs_packet *req_msg);
 
+/** Create a request associated with connection \a conn containing a
+    RADIUS authentication message with \a user_name and \a user_pw
+    attributes.  \a user_name and _user_pw are optional and can be
+    NULL.  */
 int rs_request_create_authn(struct rs_connection *conn,
 			    struct rs_request **req_out,
 			    const char *user_name,
 			    const char *user_pw);
-int rs_request_send(struct rs_request *request, struct rs_packet **resp_msg);
-void rs_request_destroy(struct rs_request *request);
+/** Send request \a req and wait for a matching response.  The
+    response is put in \a resp_msg (if not NULL).  NOTE: At present,
+    no more than one outstanding request to a given realm is
+    supported.  This will change in a future version.  */
+int rs_request_send(struct rs_request *req, struct rs_packet **resp_msg);
+
+/** Free all memory allocated by request \a req including the request
+    packet and any response package associated with the request.  Note
+    that a request must be freed before its associated connection can
+    be freed.  */
+void rs_request_destroy(struct rs_request *req);
 
 #if defined (__cplusplus)
 }
diff --git a/lib/request.c b/lib/request.c
index f354382..c74ed92 100644
--- a/lib/request.c
+++ b/lib/request.c
@@ -41,10 +41,10 @@ rs_request_create (struct rs_connection *conn, struct rs_request **req_out)
 }
 
 void
-rs_request_add_reqpkt (struct rs_request *req, struct rs_packet *reqpkt)
+rs_request_add_reqpkt (struct rs_request *req, struct rs_packet *req_msg)
 {
   assert (req);
-  req->req_msg = reqpkt;
+  req->req_msg = req_msg;
 }
 
 int