Proxy redirects from IPFS gateway

[grncdr]

This fixes an issue where relative URLs inside an index.html are resolved incorrectly on gateway.ipfs.io

For reference, compare the behaviour of the same content when accessed with/without a trailing slash:

• works: http://gateway.ipfs.io/ipfs/QmUA7nCLEDUXGznoRJUmc2P2Yafx9T57iKHNfENoJoW7Ls/
• doesn't: http://gateway.ipfs.io/ipfs/QmUA7nCLEDUXGznoRJUmc2P2Yafx9T57iKHNfENoJoW7Ls

[ghost]

@grncdr thanks for looking into this - IPFS takes care of this on its own by redirecting to the trailing slash, if there is a link called index.html on the object. We run multireq in front of IPFS, which was following redirects :/ I had fixed this specific issue on Tuesday, but only partially. Last commit in whyrusleeping/multireq#1 fixes it finally.

Btw you can use https://ipfs.io instead of http://gateway.ipfs.io -- it'll soon redirect

[ghost]

We run multireq in front of IPFS, which was following redirects

... which is why the redirect never made it to you :)

[ghost]

Sorry I meant this commit: https://github.com/lgierth/multireq/commit/1a08dc129dd735f33273b441347199e4593646b4