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downstreambaseurl placeholder for multiple location value redirects (#207)

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Tom Pallister
2018-01-27 20:03:49 +00:00
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parent d0eee70c46
commit f572d1b0ca
8 changed files with 265 additions and 10 deletions
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31
docs/features/headerstransformation.rst
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@ -39,9 +39,10 @@ Add the following to a ReRoute in configuration.json in order to replace http://
Placeholders
^^^^^^^^^^^^
Ocelot allows placeholders that can be used in header transformation. At the moment there is only one placeholder.
Ocelot allows placeholders that can be used in header transformation.
{BaseUrl} - This will use Ocelot's base url e.g. http://localhost:5000 as its value.
{DownstreamBaseUrl} - This will use the downstream services base url e.g. http://localhost:5000 as its value. This only works for DownstreamHeaderTransform at the moment.
Handling 302 Redirects
^^^^^^^^^^^^^^^^^^^^^^
@ -67,4 +68,30 @@ or you could use the BaseUrl placeholder.
"AllowAutoRedirect": false,
},
Ocelot will not try and replace the location header returned by the downstream service with its own URL.
finally if you are using a load balancer with Ocelot you will get multiple downstream base urls so the above would not work. In this case you can do the following.
.. code-block:: json
"DownstreamHeaderTransform": {
"Location": "{DownstreamBaseUrl}, {BaseUrl}"
},
"HttpHandlerOptions": {
"AllowAutoRedirect": false,
},
Future
^^^^^^
Ideally this feature would be able to support the fact that a header can have multiple values. At the moment it just assumes one.
It would also be nice if it could multi find and replace e.g.
.. code-block:: json
"DownstreamHeaderTransform": {
"Location": "[{one,one},{two,two}"
},
"HttpHandlerOptions": {
"AllowAutoRedirect": false,
},
If anyone wants to have a go at this please help yourself!!