Taken from $GOROOT/src/pkg/net/http/chunked needed to write https responses to client.
Package goproxy provides a customizable HTTP proxy, supporting hijacking HTTPS connection.
The intent of the proxy, is to be usable with reasonable amount of traffic yet, customizable and programmable.
The proxy itself is simply an `net/http` handler.
Typical usage is
proxy := goproxy.NewProxyHttpServer()
proxy.OnRequest(..conditions..).Do(..requesthandler..)
proxy.OnRequest(..conditions..).DoFunc(..requesthandlerFunction..)
proxy.OnResponse(..conditions..).Do(..responesHandler..)
proxy.OnResponse(..conditions..).DoFunc(..responesHandlerFunction..)
http.ListenAndServe(":8080", proxy)
Adding a header to each request
proxy.OnRequest().DoFunc(func(r *http.Request,ctx *goproxy.ProxyCtx) (*http.Request, *http.Response){
r.Header.Set("X-GoProxy","1")
return r, nil
})
> Note that the function is called before the proxy sends the request to the server
For printing the content type of all incoming responses
proxy.OnResponse().DoFunc(func(r *http.Response, ctx *goproxy.ProxyCtx)*http.Response{
println(ctx.Req.Host,"->",r.Header.Get("Content-Type"))
return r
})
note that we used the ProxyCtx context variable here. It contains the request and the response (Req and Resp, Resp is nil if unavailable) of this specific client interaction with the proxy.
To print the content type of all responses from a certain url, we'll add a ReqCondition to the OnResponse function:
proxy.OnResponse(goproxy.UrlIs("golang.org/pkg")).DoFunc(func(r *http.Response, ctx *goproxy.ProxyCtx)*http.Response{
println(ctx.Req.Host,"->",r.Header.Get("Content-Type"))
return r
})
We can write the condition ourselves, conditions can be set on request and on response
var random = ReqConditionFunc(func(r *http.Request) bool {
return rand.Intn(1) == 0
})
var hasGoProxyHeader = RespConditionFunc(func(resp *http.Response,req *http.Request)bool {
return resp.Header.Get("X-GoProxy") != ""
})
Caution! If you give a RespCondition to the OnRequest function, you'll get a run time panic! It doesn't make sense to read the response, if you still haven't got it!
Finally, we have convenience function to throw a quick response
proxy.OnResponse(hasGoProxyHeader).DoFunc(func(r*http.Response,ctx *goproxy.ProxyCtx)*http.Response {
r.Body.Close()
return goproxy.NewResponse(
ctx.Req, goproxy.ContentTypeText, http.StatusForbidden, "Can't see response with X-GoProxy header!"
)
})
we close the body of the original response, and return a new 403 response with a short message.
Example use cases:
1. https://github.com/elazarl/goproxy/tree/master/examples/goproxy-avgsize
To measure the average size of an Html served in your site. One can ask all the QA team to access the website by a proxy, and the proxy will measure the average size of all text/html responses from your host.
2. [not yet implemented]
All requests to your web servers should be directed through the proxy, when the proxy will detect html pieces sent as a response to AJAX request, it'll send a warning email.
3. https://github.com/elazarl/goproxy/blob/master/examples/goproxy-httpdump/
Generate a real traffic to your website by real users using through proxy. Record the traffic, and try it again for more real load testing.
4. https://github.com/elazarl/goproxy/tree/master/examples/goproxy-no-reddit-at-worktime
Will allow browsing to reddit.com between 8:00am and 17:00pm
5. https://github.com/elazarl/goproxy/tree/master/examples/goproxy-jquery-version
Will warn if multiple versions of jquery are used in the same domain.
6. https://github.com/elazarl/goproxy/blob/master/examples/goproxy-upside-down-ternet/
Modifies image files in an HTTP response via goproxy's image extension found in ext/.
const ( ConnectAccept = iota ConnectReject ConnectMitm ConnectHijack ConnectHTTPMitm ConnectProxyAuthHijack )View Source
const ( ContentTypeText = "text/plain" ContentTypeHtml = "text/html" )View Source
var CA_CERT = []byte(`-----BEGIN CERTIFICATE----- MIIF9DCCA9ygAwIBAgIJAODqYUwoVjJkMA0GCSqGSIb3DQEBCwUAMIGOMQswCQYD VQQGEwJJTDEPMA0GA1UECAwGQ2VudGVyMQwwCgYDVQQHDANMb2QxEDAOBgNVBAoM B0dvUHJveHkxEDAOBgNVBAsMB0dvUHJveHkxGjAYBgNVBAMMEWdvcHJveHkuZ2l0 aHViLmlvMSAwHgYJKoZIhvcNAQkBFhFlbGF6YXJsQGdtYWlsLmNvbTAeFw0xNzA0 MDUyMDAwMTBaFw0zNzAzMzEyMDAwMTBaMIGOMQswCQYDVQQGEwJJTDEPMA0GA1UE CAwGQ2VudGVyMQwwCgYDVQQHDANMb2QxEDAOBgNVBAoMB0dvUHJveHkxEDAOBgNV BAsMB0dvUHJveHkxGjAYBgNVBAMMEWdvcHJveHkuZ2l0aHViLmlvMSAwHgYJKoZI hvcNAQkBFhFlbGF6YXJsQGdtYWlsLmNvbTCCAiIwDQYJKoZIhvcNAQEBBQADggIP ADCCAgoCggIBAJ4Qy+H6hhoY1s0QRcvIhxrjSHaO/RbaFj3rwqcnpOgFq07gRdI9 3c0TFKQJHpgv6feLRhEvX/YllFYu4J35lM9ZcYY4qlKFuStcX8Jm8fqpgtmAMBzP sqtqDi8M9RQGKENzU9IFOnCV7SAeh45scMuI3wz8wrjBcH7zquHkvqUSYZz035t9 V6WTrHyTEvT4w+lFOVN2bA/6DAIxrjBiF6DhoJqnha0SZtDfv77XpwGG3EhA/qoh hiYrDruYK7zJdESQL44LwzMPupVigqalfv+YHfQjbhT951IVurW2NJgRyBE62dLr lHYdtT9tCTCrd+KJNMJ+jp9hAjdIu1Br/kifU4F4+4ZLMR9Ueji0GkkPKsYdyMnq j0p0PogyvP1l4qmboPImMYtaoFuYmMYlebgC9LN10bL91K4+jLt0I1YntEzrqgJo WsJztYDw543NzSy5W+/cq4XRYgtq1b0RWwuUiswezmMoeyHZ8BQJe2xMjAOllASD fqa8OK3WABHJpy4zUrnUBiMuPITzD/FuDx4C5IwwlC68gHAZblNqpBZCX0nFCtKj YOcI2So5HbQ2OC8QF+zGVuduHUSok4hSy2BBfZ1pfvziqBeetWJwFvapGB44nIHh WKNKvqOxLNIy7e+TGRiWOomrAWM18VSR9LZbBxpJK7PLSzWqYJYTRCZHAgMBAAGj UzBRMB0GA1UdDgQWBBR4uDD9Y6x7iUoHO+32ioOcw1ICZTAfBgNVHSMEGDAWgBR4 uDD9Y6x7iUoHO+32ioOcw1ICZTAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEB CwUAA4ICAQAaCEupzGGqcdh+L7BzhX7zyd7yzAKUoLxFrxaZY34Xyj3lcx1XoK6F AqsH2JM25GixgadzhNt92JP7vzoWeHZtLfstrPS638Y1zZi6toy4E49viYjFk5J0 C6ZcFC04VYWWx6z0HwJuAS08tZ37JuFXpJGfXJOjZCQyxse0Lg0tuKLMeXDCk2Y3 Ba0noeuNyHRoWXXPyiUoeApkVCU5gIsyiJSWOjhJ5hpJG06rQNfNYexgKrrraEin o0jmEMtJMx5TtD83hSnLCnFGBBq5lkE7jgXME1KsbIE3lJZzRX1mQwUK8CJDYxye i6M/dzSvy0SsPvz8fTAlprXRtWWtJQmxgWENp3Dv+0Pmux/l+ilk7KA4sMXGhsfr bvTOeWl1/uoFTPYiWR/ww7QEPLq23yDFY04Q7Un0qjIk8ExvaY8lCkXMgc8i7sGY VfvOYb0zm67EfAQl3TW8Ky5fl5CcxpVCD360Bzi6hwjYixa3qEeBggOixFQBFWft 8wrkKTHpOQXjn4sDPtet8imm9UYEtzWrFX6T9MFYkBR0/yye0FIh9+YPiTA6WB86 NCNwK5Yl6HuvF97CIH5CdgO+5C7KifUtqTOL8pQKbNwy0S3sNYvB+njGvRpR7pKV BUnFpB/Atptqr4CUlTXrc5IPLAqAfmwk5IKcwy3EXUbruf9Dwz69YA== -----END CERTIFICATE-----`)View Source
var CA_KEY = []byte(`-----BEGIN RSA PRIVATE KEY----- MIIJKAIBAAKCAgEAnhDL4fqGGhjWzRBFy8iHGuNIdo79FtoWPevCpyek6AWrTuBF 0j3dzRMUpAkemC/p94tGES9f9iWUVi7gnfmUz1lxhjiqUoW5K1xfwmbx+qmC2YAw HM+yq2oOLwz1FAYoQ3NT0gU6cJXtIB6Hjmxwy4jfDPzCuMFwfvOq4eS+pRJhnPTf m31XpZOsfJMS9PjD6UU5U3ZsD/oMAjGuMGIXoOGgmqeFrRJm0N+/vtenAYbcSED+ qiGGJisOu5grvMl0RJAvjgvDMw+6lWKCpqV+/5gd9CNuFP3nUhW6tbY0mBHIETrZ 0uuUdh21P20JMKt34ok0wn6On2ECN0i7UGv+SJ9TgXj7hksxH1R6OLQaSQ8qxh3I yeqPSnQ+iDK8/WXiqZug8iYxi1qgW5iYxiV5uAL0s3XRsv3Urj6Mu3QjVie0TOuq AmhawnO1gPDnjc3NLLlb79yrhdFiC2rVvRFbC5SKzB7OYyh7IdnwFAl7bEyMA6WU BIN+prw4rdYAEcmnLjNSudQGIy48hPMP8W4PHgLkjDCULryAcBluU2qkFkJfScUK 0qNg5wjZKjkdtDY4LxAX7MZW524dRKiTiFLLYEF9nWl+/OKoF561YnAW9qkYHjic geFYo0q+o7Es0jLt75MZGJY6iasBYzXxVJH0tlsHGkkrs8tLNapglhNEJkcCAwEA AQKCAgAwSuNvxHHqUUJ3XoxkiXy1u1EtX9x1eeYnvvs2xMb+WJURQTYz2NEGUdkR kPO2/ZSXHAcpQvcnpi2e8y2PNmy/uQ0VPATVt6NuWweqxncR5W5j82U/uDlXY8y3 lVbfak4s5XRri0tikHvlP06dNgZ0OPok5qi7d+Zd8yZ3Y8LXfjkykiIrSG1Z2jdt zCWTkNmSUKMGG/1CGFxI41Lb12xuq+C8v4f469Fb6bCUpyCQN9rffHQSGLH6wVb7 +68JO+d49zCATpmx5RFViMZwEcouXxRvvc9pPHXLP3ZPBD8nYu9kTD220mEGgWcZ 3L9dDlZPcSocbjw295WMvHz2QjhrDrb8gXwdpoRyuyofqgCyNxSnEC5M13SjOxtf pjGzjTqh0kDlKXg2/eTkd9xIHjVhFYiHIEeITM/lHCfWwBCYxViuuF7pSRPzTe8U C440b62qZSPMjVoquaMg+qx0n9fKSo6n1FIKHypv3Kue2G0WhDeK6u0U288vQ1t4 Ood3Qa13gZ+9hwDLbM/AoBfVBDlP/tpAwa7AIIU1ZRDNbZr7emFdctx9B6kLINv3 4PDOGM2xrjOuACSGMq8Zcu7LBz35PpIZtviJOeKNwUd8/xHjWC6W0itgfJb5I1Nm V6Vj368pGlJx6Se26lvXwyyrc9pSw6jSAwARBeU4YkNWpi4i6QKCAQEA0T7u3P/9 jZJSnDN1o2PXymDrJulE61yguhc/QSmLccEPZe7or06/DmEhhKuCbv+1MswKDeag /1JdFPGhL2+4G/f/9BK3BJPdcOZSz7K6Ty8AMMBf8AehKTcSBqwkJWcbEvpHpKJ6 eDqn1B6brXTNKMT6fEEXCuZJGPBpNidyLv/xXDcN7kCOo3nGYKfB5OhFpNiL63tw +LntU56WESZwEqr8Pf80uFvsyXQK3a5q5HhIQtxl6tqQuPlNjsDBvCqj0x72mmaJ ZVsVWlv7khUrCwAXz7Y8K7mKKBd2ekF5hSbryfJsxFyvEaWUPhnJpTKV85lAS+tt FQuIp9TvKYlRQwKCAQEAwWJN8jysapdhi67jO0HtYOEl9wwnF4w6XtiOYtllkMmC 06/e9h7RsRyWPMdu3qRDPUYFaVDy6+dpUDSQ0+E2Ot6AHtVyvjeUTIL651mFIo/7 OSUCEc+HRo3SfPXdPhSQ2thNTxl6y9XcFacuvbthgr70KXbvC4k6IEmdpf/0Kgs9 7QTZCG26HDrEZ2q9yMRlRaL2SRD+7Y2xra7gB+cQGFj6yn0Wd/07er49RqMXidQf KR2oYfev2BDtHXoSZFfhFGHlOdLvWRh90D4qZf4vQ+g/EIMgcNSoxjvph1EShmKt sjhTHtoHuu+XmEQvIewk2oCI+JvofBkcnpFrVvUUrQKCAQAaTIufETmgCo0BfuJB N/JOSGIl0NnNryWwXe2gVgVltbsmt6FdL0uKFiEtWJUbOF5g1Q5Kcvs3O/XhBQGa QbNlKIVt+tAv7hm97+Tmn/MUsraWagdk1sCluns0hXxBizT27KgGhDlaVRz05yfv 5CdJAYDuDwxDXXBAhy7iFJEgYSDH00+X61tCJrMNQOh4ycy/DEyBu1EWod+3S85W t3sMjZsIe8P3i+4137Th6eMbdha2+JaCrxfTd9oMoCN5b+6JQXIDM/H+4DTN15PF 540yY7+aZrAnWrmHknNcqFAKsTqfdi2/fFqwoBwCtiEG91WreU6AfEWIiJuTZIru sIibAoIBAAqIwlo5t+KukF+9jR9DPh0S5rCIdvCvcNaN0WPNF91FPN0vLWQW1bFi L0TsUDvMkuUZlV3hTPpQxsnZszH3iK64RB5p3jBCcs+gKu7DT59MXJEGVRCHT4Um YJryAbVKBYIGWl++sZO8+JotWzx2op8uq7o+glMMjKAJoo7SXIiVyC/LHc95urOi 9+PySphPKn0anXPpexmRqGYfqpCDo7rPzgmNutWac80B4/CfHb8iUPg6Z1u+1FNe yKvcZHgW2Wn00znNJcCitufLGyAnMofudND/c5rx2qfBx7zZS7sKUQ/uRYjes6EZ QBbJUA/2/yLv8YYpaAaqj4aLwV8hRpkCggEBAIh3e25tr3avCdGgtCxS7Y1blQ2c ue4erZKmFP1u8wTNHQ03T6sECZbnIfEywRD/esHpclfF3kYAKDRqIP4K905Rb0iH 759ZWt2iCbqZznf50XTvptdmjm5KxvouJzScnQ52gIV6L+QrCKIPelLBEIqCJREh pmcjjocD/UCCSuHgbAYNNnO/JdhnSylz1tIg26I+2iLNyeTKIepSNlsBxnkLmqM1 cj/azKBaT04IOMLaN8xfSqitJYSraWMVNgGJM5vfcVaivZnNh0lZBv+qu6YkdM88 4/avCJ8IutT+FcMM+GbGazOm5ALWqUyhrnbLGc4CQMPfe7Il6NxwcrOxT8w= -----END RSA PRIVATE KEY-----`)
Will generate a valid http response to the given request the response will have the given contentType, and http status. Typical usage, refuse to process requests to local addresses:
proxy.OnRequest(IsLocalHost()).DoFunc(func(r *http.Request, ctx *goproxy.ProxyCtx) (*http.Request,*http.Response) {
return nil,NewResponse(r,goproxy.ContentTypeHtml,http.StatusUnauthorized,
`<!doctype html><html><head><title>Can't use proxy for local addresses</title></head><body/></html>`)
})
RemoveProxyHeaders removes all proxy headers which should not propagate to the next hop.
Alias for NewResponse(r,ContentTypeText,http.StatusAccepted,text).
ConnectAction enables the caller to override the standard connect flow. When Action is ConnectHijack, it is up to the implementer to send the HTTP 200, or any other valid http response back to the client from within the Hijack func.
type ConnectActionLiteral inttype FuncHttpsHandler ¶
A wrapper that would convert a function to a HttpsHandler interface type.
AlwaysMitm is a HttpsHandler that always eavesdrop https connections, for example to eavesdrop all https connections to www.google.com, we can use
proxy.OnRequest(goproxy.ReqHostIs("www.google.com")).HandleConnect(goproxy.AlwaysMitm)
AlwaysReject is a HttpsHandler that drops any CONNECT request, for example, this code will disallow connections to hosts on any other port than 443
proxy.OnRequest(goproxy.Not(goproxy.ReqHostMatches(regexp.MustCompile(":443$"))).
HandleConnect(goproxy.AlwaysReject)
func (FuncHttpsHandler) HandleConnect ¶
FuncHttpsHandler should implement the RespHandler interface.
type FuncReqHandler ¶A wrapper that would convert a function to a ReqHandler interface type.
func (FuncReqHandler) Handle ¶FuncReqHandler.Handle(req,ctx) <=> FuncReqHandler(req,ctx).
type FuncRespHandler ¶A wrapper that would convert a function to a RespHandler interface type.
func (FuncRespHandler) Handle ¶FuncRespHandler.Handle(req,ctx) <=> FuncRespHandler(req,ctx).
H2Transport is an implementation of RoundTripper that abstracts an entire HTTP/2 session, sending all client frames to the server and responses back to the client.
RoundTrip executes an HTTP/2 session (including all contained streams). The request and response are ignored but any error encountered during the proxying from the session is returned as a result of the invocation.
type HttpsHandler ¶When a client send a CONNECT request to a host, the request is filtered through all the HttpsHandlers the proxy has, and if one returns true, the connection is sniffed using Man in the Middle attack. That is, the proxy will create a TLS connection with the client, another TLS connection with the destination the client wished to connect to, and would send back and forth all messages from the server to the client and vice versa. The request and responses sent in this Man In the Middle channel are filtered through the usual flow (request and response filtered through the ReqHandlers and RespHandlers).
type Logger interface {
Printf(format string, v ...any)
}
type ProxyConds struct {
}
ProxyConds is used to aggregate RespConditions for a ProxyHttpServer. Upon calling ProxyConds.Do, it will register a RespHandler that would handle the HTTP response from remote server if all conditions on the HTTP response are met.
ProxyConds.Do will register the RespHandler on the proxy, h.Handle(resp,ctx) will be called on every request that matches the conditions aggregated in pcond.
ProxyConds.DoFunc is equivalent to proxy.OnResponse().Do(FuncRespHandler(f)).
ProxyCtx is the Proxy context, contains useful information about every request. It is passed to every user function. Also used as a logger.
Will try to infer the character set of the request from the headers. Returns the empty string if we don't know which character set it used. Currently it will look for charset=<charset> in the Content-Type header of the request.
Logf prints a message to the proxy's log. Should be used in a ProxyHttpServer's filter This message will be printed only if the Verbose field of the ProxyHttpServer is set to true
proxy.OnRequest().DoFunc(func(r *http.Request,ctx *goproxy.ProxyCtx) (*http.Request, *http.Response){
nr := atomic.AddInt32(&counter,1)
ctx.Printf("So far %d requests",nr)
return r, nil
})
Warnf prints a message to the proxy's log. Should be used in a ProxyHttpServer's filter This message will always be printed.
proxy.OnRequest().DoFunc(func(r *http.Request,ctx *goproxy.ProxyCtx) (*http.Request, *http.Response){
f,err := os.OpenFile(cachedContent)
if err != nil {
ctx.Warnf("error open file %v: %v",cachedContent,err)
return r, nil
}
return r, nil
})
The basic proxy type. Implements http.Handler.
NewProxyHttpServer creates and returns a proxy server, logging to stderr by default.
ProxyHttpServer.OnRequest Will return a temporary ReqProxyConds struct, aggregating the given condtions. You will use the ReqProxyConds struct to register a ReqHandler, that would filter the request, only if all the given ReqCondition matched. Typical usage:
proxy.OnRequest(UrlIs("example.com/foo"),UrlMatches(regexp.MustParse(`.*\.exampl.\com\./.*`)).Do(...)
OnResponse is used when adding a response-filter to the HTTP proxy, usual pattern is
proxy.OnResponse(cond1,cond2).Do(handler) // handler.Handle(resp,ctx) will be used // if cond1.HandleResp(resp) && cond2.HandleResp(resp)
Standard net/http function. Shouldn't be used directly, http.Serve will use it.
ReqCondition.HandleReq will decide whether or not to use the ReqHandler on an HTTP request before sending it to the remote server.
SrcIpIs returns a ReqCondition testing whether the source IP of the request is one of the given strings.
ReqConditionFunc.HandleReq(req,ctx) <=> ReqConditionFunc(req,ctx).
IsLocalHost checks whether the destination host is localhost.
DstHostIs returns a ReqCondition testing wether the host in the request url is the given string.
Not returns a ReqCondition negating the given ReqCondition.
ReqHostIs returns a ReqCondition, testing whether the host to which the request is directed to equal to one of the given strings.
ReqHostMatches returns a ReqCondition, testing whether the host to which the request was directed to matches any of the given regular expressions.
UrlHasPrefix returns a ReqCondition checking wether the destination URL the proxy client has requested has the given prefix, with or without the host. For example UrlHasPrefix("host/x") will match requests of the form 'GET host/x', and will match requests to url 'http://host/x'
UrlIs returns a ReqCondition, testing whether or not the request URL is one of the given strings with or without the host prefix. UrlIs("google.com/","foo") will match requests 'GET /' to 'google.com', requests `'GET google.com/' to any host, and requests of the form 'GET foo'.
UrlMatches returns a ReqCondition testing whether the destination URL of the request matches the given regexp, with or without prefix.
func (ReqConditionFunc) HandleResp ¶ReqConditionFunc cannot test responses. It only satisfies RespCondition interface so that to be usable as RespCondition.
type ReqHandler ¶ReqHandler will "tamper" with the request coming to the proxy server If Handle returns req,nil the proxy will send the returned request to the destination server. If it returns nil,resp the proxy will skip sending any requests, and will simply return the response `resp` to the client.
type ReqProxyConds struct {
}
ReqProxyConds aggregate ReqConditions for a ProxyHttpServer. Upon calling Do, it will register a ReqHandler that would handle the request if all conditions on the HTTP request are met.
ReqProxyConds.Do will register the ReqHandler on the proxy, the ReqHandler will handle the HTTP request if all the conditions aggregated in the ReqProxyConds are met. Typical usage:
proxy.OnRequest().Do(handler) // will call handler.Handle(req,ctx) on every request to the proxy proxy.OnRequest(cond1,cond2).Do(handler) // given request to the proxy, will test if cond1.HandleReq(req,ctx) && cond2.HandleReq(req,ctx) are true // if they are, will call handler.Handle(req,ctx)
DoFunc is equivalent to proxy.OnRequest().Do(FuncReqHandler(f)).
func (*ReqProxyConds) HandleConnect ¶HandleConnect is used when proxy receives an HTTP CONNECT request, it'll then use the HttpsHandler to determine what should it do with this request. The handler returns a ConnectAction struct, the Action field in the ConnectAction struct returned will determine what to do with this request. ConnectAccept will simply accept the request forwarding all bytes from the client to the remote host, ConnectReject will close the connection with the client, and ConnectMitm, will assume the underlying connection is an HTTPS connection, and will use Man in the Middle attack to eavesdrop the connection. All regular handler will be active on this eavesdropped connection. The ConnectAction struct contains possible tlsConfig that will be used for eavesdropping. If nil, the proxy will use the default tls configuration.
proxy.OnRequest().HandleConnect(goproxy.AlwaysReject) // rejects all CONNECT requestsfunc (*ReqProxyConds) HandleConnectFunc ¶
HandleConnectFunc is equivalent to HandleConnect, for example, accepting CONNECT request if they contain a password in header
io.WriteString(h,password)
passHash := h.Sum(nil)
proxy.OnRequest().HandleConnectFunc(func(host string, ctx *ProxyCtx) (*ConnectAction, string) {
c := sha1.New()
io.WriteString(c,ctx.Req.Header.Get("X-GoProxy-Auth"))
if c.Sum(nil) == passHash {
return OkConnect, host
}
return RejectConnect, host
})
RespCondition.HandleReq will decide whether or not to use the RespHandler on an HTTP response before sending it to the proxy client. Note that resp might be nil, in case there was an error sending the request.
ContentTypeIs returns a RespCondition testing whether the HTTP response has Content-Type header equal to one of the given strings.
StatusCodeIs returns a RespCondition, testing whether or not the HTTP status code is one of the given ints.
RespConditionFunc.HandleResp(resp,ctx) <=> RespConditionFunc(resp,ctx).
type RespHandler ¶after the proxy have sent the request to the destination server, it will "filter" the response through the RespHandlers it has. The proxy server will send to the client the response returned by the RespHandler. In case of error, resp will be nil, and ctx.RoundTrip.Error will contain the error.
func HandleBytes ¶HandleBytes will return a RespHandler that read the entire body of the request to a byte array in memory, would run the user supplied f function on the byte arra, and will replace the body of the original response with the resulting byte array.
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