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Add example for #1706 (we already cover that functionality through the rest of the examples, but make it clear for newcomers that, dependencies can be used for that kind of reasons as well)

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This commit is contained in:
Gerasimos (Makis) Maropoulos
2021-01-21 05:57:37 +02:00
parent e990b23a64
commit 6c823e4864
3 changed files with 103 additions and 33 deletions
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58
core/host/proxy.go
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@@ -17,26 +17,14 @@ import (
// the target request will be for /base/dir.
//
// Relative to httputil.NewSingleHostReverseProxy with some additions.
//
// Look `ProxyHandlerRemote` too.
func ProxyHandler(target *url.URL) *httputil.ReverseProxy {
targetQuery := target.RawQuery
director := func(req *http.Request) {
req.URL.Scheme = target.Scheme
req.URL.Host = target.Host
req.Host = target.Host
modifyProxiedRequest(req, target)
req.URL.Path = path.Join(target.Path, req.URL.Path)
if targetQuery == "" || req.URL.RawQuery == "" {
req.URL.RawQuery = targetQuery + req.URL.RawQuery
} else {
req.URL.RawQuery = targetQuery + "&" + req.URL.RawQuery
}
if _, ok := req.Header["User-Agent"]; !ok {
// explicitly disable User-Agent so it's not set to default value
req.Header.Set("User-Agent", "")
}
}
p := &httputil.ReverseProxy{Director: director}
if netutil.IsLoopbackHost(target.Host) {
@@ -49,37 +37,41 @@ func ProxyHandler(target *url.URL) *httputil.ReverseProxy {
return p
}
func modifyProxiedRequest(req *http.Request, target *url.URL) {
req.URL.Scheme = target.Scheme
req.URL.Host = target.Host
req.Host = target.Host
if target.RawQuery == "" || req.URL.RawQuery == "" {
req.URL.RawQuery = target.RawQuery + req.URL.RawQuery
} else {
req.URL.RawQuery = target.RawQuery + "&" + req.URL.RawQuery
}
if _, ok := req.Header["User-Agent"]; !ok {
// explicitly disable User-Agent so it's not set to default value
req.Header.Set("User-Agent", "")
}
}
// ProxyHandlerRemote returns a new ReverseProxy that rewrites
// URLs to the scheme, host, and path provided in target.
// Case 1: req.Host == target.Host
// behavior same as ProxyHandler
// Case 2: req.Host != target.Host
// the target request will be forwarded to the target's url
// insecureSkipVerify indicates enable ssl certificate verification or not
// insecureSkipVerify indicates enable ssl certificate verification or not.
//
// Look `ProxyHandler` too.
func ProxyHandlerRemote(target *url.URL, insecureSkipVerify bool) *httputil.ReverseProxy {
targetQuery := target.RawQuery
director := func(req *http.Request) {
req.URL.Scheme = target.Scheme
modifyProxiedRequest(req, target)
if req.Host != target.Host {
req.URL.Path = target.Path
} else {
req.URL.Path = path.Join(target.Path, req.URL.Path)
}
req.URL.Host = target.Host
req.Host = target.Host
if targetQuery == "" || req.URL.RawQuery == "" {
req.URL.RawQuery = targetQuery + req.URL.RawQuery
} else {
req.URL.RawQuery = targetQuery + "&" + req.URL.RawQuery
}
if _, ok := req.Header["User-Agent"]; !ok {
// explicitly disable User-Agent so it's not set to default value
req.Header.Set("User-Agent", "")
}
}
p := &httputil.ReverseProxy{Director: director}