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nghttpx: Implement Forwarded in HTTP/2 backend

This commit is contained in:
Tatsuhiro Tsujikawa 2016-01-15 23:37:28 +09:00
parent 54f5ea9d6e
commit 41047aece0
1 changed files with 42 additions and 4 deletions
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46
src/shrpx_http2_downstream_connection.cc
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@ -283,7 +283,7 @@ int Http2DownstreamConnection::push_request_headers() {
num_cookies = downstream_->count_crumble_request_cookie();
}
// 8 means:
// 9 means:
// 1. :method
// 2. :scheme
// 3. :path
@ -292,8 +292,9 @@ int Http2DownstreamConnection::push_request_headers() {
// 6. x-forwarded-for (optional)
// 7. x-forwarded-proto (optional)
// 8. te (optional)
// 9. forwarded (optional)
auto nva = std::vector<nghttp2_nv>();
nva.reserve(req.fs.headers().size() + 8 + num_cookies +
nva.reserve(req.fs.headers().size() + 9 + num_cookies +
get_config()->add_request_headers.size());
nva.push_back(
@ -326,6 +327,44 @@ int Http2DownstreamConnection::push_request_headers() {
downstream_->crumble_request_cookie(nva);
}
auto upstream = downstream_->get_upstream();
auto handler = upstream->get_client_handler();
std::string forwarded_value;
auto fwd = get_config()->strip_incoming_forwarded
? nullptr
: req.fs.header(http2::HD_FORWARDED);
if (get_config()->forwarded_params) {
auto params = get_config()->forwarded_params;
if (get_config()->http2_proxy || get_config()->client_proxy ||
req.method == HTTP_CONNECT) {
params &= ~FORWARDED_PROTO;
}
auto value = http::create_forwarded(params, handler->get_forwarded_by(),
handler->get_forwarded_for(),
req.authority, req.scheme);
if (fwd || !value.empty()) {
if (fwd) {
forwarded_value = fwd->value;
if (!value.empty()) {
forwarded_value += ", ";
}
}
forwarded_value += value;
nva.push_back(http2::make_nv_ls("forwarded", forwarded_value));
}
} else if (fwd) {
nva.push_back(http2::make_nv_ls_nocopy("forwarded", fwd->value));
forwarded_value = fwd->value;
}
std::string xff_value;
auto xff = req.fs.header(http2::HD_X_FORWARDED_FOR);
if (get_config()->add_x_forwarded_for) {
@ -333,8 +372,7 @@ int Http2DownstreamConnection::push_request_headers() {
xff_value = (*xff).value;
xff_value += ", ";
}
xff_value +=
downstream_->get_upstream()->get_client_handler()->get_ipaddr();
xff_value += upstream->get_client_handler()->get_ipaddr();
nva.push_back(http2::make_nv_ls("x-forwarded-for", xff_value));
} else if (xff && !get_config()->strip_incoming_x_forwarded_for) {
nva.push_back(http2::make_nv_ls_nocopy("x-forwarded-for", (*xff).value));