From a13e73d70d2af0a686701a3c8b16b82b664abd19 Mon Sep 17 00:00:00 2001 From: Bram Verburg Date: Fri, 17 Mar 2017 10:35:49 +0200 Subject: Omit port from Host header on redirect to well-known port ERL-316, as part of 19.3, adds the port number to the Host header upon automatic redirection. The port number is included even if it is a well-known port (80, 443). This is different from the behaviour of most HTTP clients, as well as httpc's own for new requests. The added port number can lead to problems such as this one, where the request signature assumes the client will not send the :443 suffix on redirection to an https URL: https://github.com/nerves-project/nerves/issues/96 I was unable to add a test case, since that would require a server on a well-known port, but I manually verified that the GitHub/S3 signing issue was indeed resolved with this patch. --- lib/inets/src/http_lib/http_request.erl | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'lib/inets/src/http_lib') diff --git a/lib/inets/src/http_lib/http_request.erl b/lib/inets/src/http_lib/http_request.erl index c77b616f0d..4c50edb5ef 100644 --- a/lib/inets/src/http_lib/http_request.erl +++ b/lib/inets/src/http_lib/http_request.erl @@ -22,7 +22,7 @@ -include("http_internal.hrl"). --export([headers/2, http_headers/1, is_absolut_uri/1, key_value/1]). +-export([headers/2, http_headers/1, is_absolut_uri/1, key_value/1, normalize_host/3]). key_value(KeyValueStr) -> @@ -85,6 +85,22 @@ is_absolut_uri("https://" ++ _) -> is_absolut_uri(_) -> false. +%%------------------------------------------------------------------------- +%% normalize_host(Scheme, Host, Port) -> string() +%% Scheme - http | https +%% Host - string() +%% Port - integer() +%% +%% Description: returns a normalized Host header value, with the port +%% number omitted for well-known ports +%%------------------------------------------------------------------------- +normalize_host(https, Host, 443 = _Port) -> + Host; +normalize_host(http, Host, 80 = _Port) -> + Host; +normalize_host(_Scheme, Host, Port) -> + Host ++ ":" ++ integer_to_list(Port). + %%%======================================================================== %%% Internal functions %%%======================================================================== -- cgit v1.2.3