Add option for sending protocol parameters in either the header or querystring.

src/oauth_client.erl

@@ -2,9 +2,9 @@
 
 -behaviour(gen_server).
 
--export([access_token_params/1, deauthorize/1, get/2, get/3, get_access_token/2,
-  get_access_token/3, get_request_token/2, get_request_token/3, start/1, start/2,
-  start_link/1, start_link/2, stop/1]).
+-export([access_token_params/1, deauthorize/1, get/2, get/3, get/4, get_access_token/2,
+  get_access_token/3, get_access_token/4, get_request_token/2, get_request_token/3,
+  get_request_token/4, start/1, start/2, start_link/1, start_link/2, stop/1]).
 
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, code_change/3, terminate/2]).
 
@@ -25,22 +25,31 @@ start_link(ServerName, Consumer) ->
   gen_server:start_link(ServerName, ?MODULE, Consumer, []).
 
 get_request_token(Client, URL) ->
-  get_request_token(Client, URL, []).
+  get_request_token(Client, URL, [], header).
 
 get_request_token(Client, URL, Params) ->
-  gen_server:call(Client, {get_request_token, URL, Params}).
+  gen_server:call(Client, {get_request_token, URL, Params, header}).
+
+get_request_token(Client, URL, Params, ParamsMethod) ->
+  gen_server:call(Client, {get_request_token, URL, Params, ParamsMethod}).
 
 get_access_token(Client, URL) ->
-  get_access_token(Client, URL, []).
+  get_access_token(Client, URL, [], header).
 
 get_access_token(Client, URL, Params) ->
-  gen_server:call(Client, {get_access_token, URL, Params}).
+  gen_server:call(Client, {get_access_token, URL, Params, header}).
+
+get_access_token(Client, URL, Params, ParamsMethod) ->
+  gen_server:call(Client, {get_access_token, URL, Params, ParamsMethod}).
 
 get(Client, URL) ->
-  get(Client, URL, []).
+  get(Client, URL, [], header).
 
 get(Client, URL, Params) ->
-  gen_server:call(Client, {get, URL, Params}).
+  gen_server:call(Client, {get, URL, Params, header}).
+
+get(Client, URL, Params, ParamsMethod) ->
+  gen_server:call(Client, {get, URL, Params, ParamsMethod}).
 
 access_token_params(Client) ->
   gen_server:call(Client, {access_token_params}).
@@ -55,11 +64,13 @@ stop(Client) ->
 %% Helper functions
 %%============================================================================
 
-oauth_get(URL, Params, Consumer, Token, TokenSecret) ->
+oauth_get(header, URL, Params, Consumer, Token, TokenSecret) ->
   Signed = oauth:signed_params("GET", URL, Params, Consumer, Token, TokenSecret),
   {AuthorizationParams, QueryParams} = lists:partition(fun({K, _}) -> lists:prefix("oauth_", K) end, Signed),
   Request = {oauth:uri(URL, QueryParams), [oauth:header(AuthorizationParams)]},
-  http:request(get, Request, [{autoredirect, false}], []).
+  http:request(get, Request, [{autoredirect, false}], []);
+oauth_get(querystring, URL, Params, Consumer, Token, TokenSecret) ->
+  oauth:get(URL, Params, Consumer, Token, TokenSecret).
 
 %%============================================================================
 %% gen_server callbacks
@@ -68,8 +79,8 @@ oauth_get(URL, Params, Consumer, Token, TokenSecret) ->
 init(Consumer) ->
   {ok, {Consumer}}.
 
-handle_call({get_request_token, URL, Params}, _From, State={Consumer}) ->
-  case oauth_get(URL, Params, Consumer, "", "") of
+handle_call({get_request_token, URL, Params, ParamsMethod}, _From, State={Consumer}) ->
+  case oauth_get(ParamsMethod, URL, Params, Consumer, "", "") of
     {ok, Response} ->
       case oauth_http:response_code(Response) of
         200 ->
@@ -81,8 +92,8 @@ handle_call({get_request_token, URL, Params}, _From, State={Consumer}) ->
     Error ->
       {reply, Error, State}
   end;
-handle_call({get_access_token, URL, Params}, _From, State={Consumer, RParams}) ->
-  case oauth_get(URL, Params, Consumer, oauth:token(RParams), oauth:token_secret(RParams)) of
+handle_call({get_access_token, URL, Params, ParamsMethod}, _From, State={Consumer, RParams}) ->
+  case oauth_get(ParamsMethod, URL, Params, Consumer, oauth:token(RParams), oauth:token_secret(RParams)) of
     {ok, Response} ->
       case oauth_http:response_code(Response) of
         200 ->
@@ -94,8 +105,8 @@ handle_call({get_access_token, URL, Params}, _From, State={Consumer, RParams}) -
     Error ->
       {reply, Error, State}
   end;
-handle_call({get, URL, Params}, _From, State={Consumer, _RParams, AParams}) ->
-  case oauth_get(URL, Params, Consumer, oauth:token(AParams), oauth:token_secret(AParams)) of
+handle_call({get, URL, Params, ParamsMethod}, _From, State={Consumer, _RParams, AParams}) ->
+  case oauth_get(ParamsMethod, URL, Params, Consumer, oauth:token(AParams), oauth:token_secret(AParams)) of
     {ok, Response={{_, Status, _}, Headers, Body}} ->
       case Status of
         200 ->