Send the following request to http://localhost:44968/_replicate
 
{'source': 'bookmarks', 
 'target': {
   'url': 'https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks', 
   'auth': {
     'oauth': {
       'consumer_secret': 'XXX', 
       'token': 'XXX', 
       'consumer_key': 'XXX', 
       'token_secret': 'XXX'
     }
   }
 }
}

Couch says the following:

[Fri, 02 Oct 2009 13:35:43 GMT] [info] [<0.6028.0>] 127.0.0.1 - - 'POST' /_replicate 401



[Fri, 02 Oct 2009 13:35:44 GMT] [error] [<0.6032.0>] {error_report,<0.24.0>,

    {<0.6032.0>,crash_report,

     [[{initial_call,{couch_rep,init,['Argument__1']}},

       {pid,<0.6032.0>},

       {registered_name,[]},

       {error_info,

           {exit,

               {db_not_found,

                   <<"https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks/">>},

               [{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},

       {ancestors,

           [couch_rep_sup,couch_primary_services,couch_server_sup,<0.1.0>]},

       {messages,[]},

       {links,[<0.49.0>]},

       {dictionary,[]},

       {trap_exit,true},

       {status,running},

       {heap_size,4181},

       {stack_size,24},

       {reductions,5265}],

      []]}}



but that database *does* exist:

$ ./utilities/web_api_tool.py --url https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks/
{'update_seq': 0, 'disk_size': 79, 'purge_seq': 0, 'doc_count': 0, 'compact_running': False, 'db_name': 'u/3c5/9dc/21/bookmarks', 'doc_del_count': 0, 'instance_start_time': '1254482932364785', 'disk_format_version': 4}


Debug log from localhost CouchDB:

[Fri, 02 Oct 2009 14:20:44 GMT] [debug] [<0.93.0>] DB at https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks/ could not be found because {ok,

                                                                                                     "401",

                                                                                                     [{"Date",

                                                                                                       "Fri, 02 Oct 2009 14:20:44 GMT"},

                                                                                                      {"Server",

                                                                                                       "CouchDB/0.10.0a (Erlang OTP/R13B)"},

                                                                                                      {"WWW-Authenticate",

                                                                                                       "Basic realm=\"administrator\""},

                                                                                                      {"Content-Type",

                                                                                                       "application/json"},

                                                                                                      {"Content-Length",

                                                                                                       "61"},

                                                                                                      {"Cache-Control",

                                                                                                       "must-revalidate"},

                                                                                                      {"Via",

                                                                                                       "1.1 couchdb.one.ubuntu.com"}],

                                                                                                     []}



[Fri, 02 Oct 2009 14:20:44 GMT] [error] [<0.93.0>] {error_report,<0.24.0>,

    {<0.93.0>,crash_report,

     [[{initial_call,{couch_rep,init,['Argument__1']}},

       {pid,<0.93.0>},

       {registered_name,[]},

       {error_info,

           {exit,

               {db_not_found,

                   <<"https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks/">>},

               [{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},

       {ancestors,

           [couch_rep_sup,couch_primary_services,couch_server_sup,<0.1.0>]},

       {messages,[]},

       {links,[<0.49.0>]},

       {dictionary,[]},

       {trap_exit,true},

       {status,running},

       {heap_size,6765},

       {stack_size,24},

       {reductions,5207}],

      []]}}



[Fri, 02 Oct 2009 14:20:44 GMT] [debug] [<0.91.0>] httpd 404 error response:

 {"error":"db_not_found","reason":"could not open https://couchdb.one.ubuntu.com:443/u%2F3c5%2F9dc%2F21%2Fbookmarks/"}