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authorAlan Coopersmith <alan.coopersmith@sun.com>2009-10-12 22:53:46 -0700
committerAlan Coopersmith <alan.coopersmith@sun.com>2009-10-12 22:55:50 -0700
commitb9346af1897b8ad9f7abb7009aa8e0ae54e161ee (patch)
treef02f90622f9f5e1362048e34285d1e11d8d3c6df
parent0ce100547bdf2323426266b8579ca632dd030f68 (diff)
Move documentation from xorg-docs module
Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com>
-rw-r--r--Makefile.am2
-rw-r--r--PM_spec153
-rw-r--r--README26
3 files changed, 181 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am
index c9c6204..4781d1f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,6 +6,8 @@ xproxymng_HEADERS = \
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = xproxymngproto.pc
+dist_doc_DATA = PM_spec
+
EXTRA_DIST = xproxymngproto.pc.in
EXTRA_DIST += ChangeLog
diff --git a/PM_spec b/PM_spec
new file mode 100644
index 0000000..b371d46
--- /dev/null
+++ b/PM_spec
@@ -0,0 +1,153 @@
+ Proxy Management Protocol
+ Draft Version 1.0
+ Ralph Mor, X Consortium
+
+
+The Proxy Management Protocol is an ICE based protocol that provides a way
+for application servers to easily locate proxy services available to them.
+
+Typically, a service called a "proxy manager" is responsible for resolving
+requests for proxy services, starting new proxies when appropriate, and
+keeping track of all of the available proxy services. The proxy manager
+strives to reuse existing proxies whenever possible.
+
+In order to request a proxy service, the GET_PROXY_ADDR message is sent to
+the proxy manager. The proxy manager will in turn forward this message to
+a proxy that it thinks can satisfy the request.
+
+GET_PROXY_ADDR
+ proxy-service : STRING
+ server-address : STRING
+ host-address : STRING
+ options : STRING
+ auth-data-len : CARD16
+ auth-name : STRING or None
+ auth-data : LISTofCARD8 or None
+
+ -->
+
+ status : CARD8
+ proxy-address : STRING
+ failure-reason : STRING
+
+
+proxy-service is the name of the proxy service to be requested, for example
+"LBX". proxy-service is a case insensitive string.
+
+server-address is the network address of the target server. The format of
+the address is specific to proxy-service. For example, for a proxy service
+of "LBX", the address would be an X display address (e.g, "wkstn.x.org:0").
+
+host-address is the network address of the host on which the proxied
+application will run. This information might be used by the proxy to
+restrict access to a specific host.
+
+options are proxy specific options that will be passed to the proxy. The
+details of these options are not specified here. Their syntax and
+semantics are defined by each proxy service.
+
+If auth-data-len is nonzero, then auth-name and auth-data contain
+authentication or authorization information that should be passed to
+the proxy. The proxy will typically use this to authenticate and
+authorize itself to the target server. The details of how the
+auth fields are used are specific to each proxy service.
+
+
+After sending GET_PROXY_ADDR the proxy manager expects a reply from
+the proxy. The status field of the reply indicates if the request can
+be satisfied.
+
+If status is Success, proxy-address will contain the network address of the
+proxy willing to handle this request. The format of the proxy address is
+specific to the proxy service being used. For example, for a proxy service
+of "LBX", the proxy address would be the X display address of the proxy
+(e.g, "gateway.x.org:63"). The proxy manager will forward the successful
+GET_PROXY_ADDR reply to whomever requested the proxy service.
+
+If status is Unable, the proxy is not able to satisfy the request but
+it believes some other proxy might be able to do so. Proxy-address is
+the empty string and failure-reason indicates the reason for failure.
+The proxy manager may choose to forward the original GET_PROXY_ADDR to
+another already running proxy, or it may choose to start up a new
+proxy. In the event that the proxy manager can not find or start a
+proxy, it will send a GET_PROXY_ADDR reply (with status Failure and an
+appropriate failure-reason) to whomever requested the proxy service.
+
+If status is Failure, the proxy is not able to satisfy the request and
+in addition is informing the requester that the request is invalid in
+some way and should not be retried.
+
+
+If the proxy manager starts up a new proxy, the proxy manager will
+need an indication from the proxy that it is ready to accept
+requests. The proxy is required to send a START_PROXY message to the
+proxy manager to identify itself and signal its readiness to receive
+requests.
+
+START_PROXY
+ proxy-service : STRING (name of proxy service, e.g. "LBX")
+
+
+When the proxy manager receives the START_PROXY message from the
+proxy it checks that the proxy-service is the one that it's expecting.
+If the proxy-service is incorrect, an IceBadValue error will be sent
+to the proxy. Otherwise, the proxy manager will forward the original
+GET_PROXY_ADDR request to the proxy and the proxy will respond to the
+GET_PROXY_ADDR request in the same way as discussed above.
+
+
+Protocol
+--------
+
+ICE protocol name is "PROXY_MANAGEMENT".
+The major opcode is assigned at run-time by ICE.
+
+
+Types
+-----
+
+STRING
+ 2 CARD16 length
+ n LISTofCARD8 the string
+ p p = pad(2+n,8)
+
+
+
+Encoding
+--------
+
+GET_PROXY_ADDR
+
+ 1 ? PROXY_MANAGEMENT
+ 1 1 opcode
+ 2 n auth-data-len (in bytes)
+ 4 (a+b+c+d+e+n+p)/8 length of remaining data in 8-byte units
+ a STRING proxy-service
+ b STRING server-address
+ c STRING host-address
+ d STRING options
+ e STRING auth-name (if auth-data-len > 0)
+ n LISTofCARD8 auth-data (if auth-data-len > 0)
+ p unused, p=pad(n,8)
+
+GET_PROXY_ADDR_REPLY
+
+ 1 ? PROXY_MANAGEMENT
+ 1 2 opcode
+ 1 CARD8 status
+ 0 Unable
+ 1 Success
+ 2 Failure
+ 1 unused
+ 4 (a+b)/8 length of remaining data in 8-byte units
+ a STRING proxy-address
+ b STRING failure-reason
+
+
+START_PROXY
+
+ 1 ? PROXY_MANAGEMENT
+ 1 3 opcode
+ 2 unused
+ 4 a/8 length of remaining data in 8-byte units
+ a STRING proxy-service
diff --git a/README b/README
new file mode 100644
index 0000000..95b17af
--- /dev/null
+++ b/README
@@ -0,0 +1,26 @@
+The Proxy Management Protocol is an ICE based protocol that provides a way
+for application servers to easily locate proxy services available to them.
+
+All questions regarding this software should be directed at the
+Xorg mailing list:
+
+ http://lists.freedesktop.org/mailman/listinfo/xorg
+
+Please submit bug reports to the Xorg bugzilla:
+
+ https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
+
+The master development code repository can be found at:
+
+ git://anongit.freedesktop.org/git/xorg/proto/pmproto
+
+ http://cgit.freedesktop.org/xorg/proto/pmproto
+
+For patch submission instructions, see:
+
+ http://www.x.org/wiki/Development/Documentation/SubmittingPatches
+
+For more information on the git code manager, see:
+
+ http://wiki.x.org/wiki/GitPage
+