Merge branch 'master' into md_changes

.gitattributes

-*.bash    text eol=lf whitespace=blank-at-eol,space-before-tab,tab-in-indent,trailing-space,tabwidth=4
-*.sh      text eol=lf whitespace=blank-at-eol,space-before-tab,tab-in-indent,trailing-space,tabwidth=4
+# shell scripts should not use tabs to indent!
+*.bash    text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
+*.sh      text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
 
-# files for systemd
-*.path    text eol=lf whitespace=blank-at-eol,space-before-tab,tab-in-indent,trailing-space,tabwidth=4
-*.service text eol=lf whitespace=blank-at-eol,space-before-tab,tab-in-indent,trailing-space,tabwidth=4
-*.timer   text eol=lf whitespace=blank-at-eol,space-before-tab,tab-in-indent,trailing-space,tabwidth=4
+# files for systemd (shell-similar)
+*.path    text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
+*.service text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
+*.timer   text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
+
+# go fmt will enforce this, but in case a user has not called "go fmt" allow GIT to catch this:
+*.go      text eol=lf core.whitespace whitespace=indent-with-non-tab,trailing-space,tabwidth=4
+
+*.yml     text eol=lf core.whitespace whitespace=tab-in-indent,trailing-space,tabwidth=2
+.git*     text eol=auto core.whitespace whitespace=trailing-space

CONTRIBUTING.md

@@ -20,10 +20,10 @@ anything about Web development
 
 ### Bug reports
 
-First, please [search this repository](https://github.com/mholt/caddy/search?q=&type=Issues&utf8=%E2%9C%93)
+Please [search this repository](https://github.com/mholt/caddy/search?q=&type=Issues&utf8=%E2%9C%93)
 with a variety of keywords to ensure your bug is not already reported.
 
-If not, [open an issue](https://github.com/mholt/caddy/issues) and answer the
+If unique, [open an issue](https://github.com/mholt/caddy/issues) and answer the
 questions so we can understand and reproduce the problematic behavior.
 
 The burden is on you to convince us that it is actually a bug in Caddy. This is
@@ -39,12 +39,16 @@ getting free help. If we helped you, please consider
 
 ### Minor improvements and new tests
 
-Submit [pull requests](https://github.com/mholt/caddy/pulls) at any time. Make
-sure to write tests to assert your change is working properly and is thoroughly
-covered. We'll ask most pull requests to be
+Submit [pull requests](https://github.com/mholt/caddy/pulls) at any time for
+minor changes or new tests. Make sure to write tests to assert your change is
+working properly and is thoroughly covered. We'll ask most pull requests to be
 [squashed](http://gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html),
 especially with small commits.
 
+Your pull request may be thoroughly reviewed. This is because if we accept the
+PR, we also assume responsibility for it, although we would prefer you to
+help maintain your code after it gets merged. 
+
 
 ### Proposals, suggestions, ideas, new features
 
@@ -54,17 +58,23 @@ with a variety of keywords to ensure your suggestion/proposal is new.
 If so, you may open either an issue or a pull request for discussion and
 feedback.
 
-The advantage of issues is that you don't have to spend time actually
-implementing your idea, but you should still describe it thoroughly. The
-advantage of a pull request is that we can immediately see the impact the change
-will have on the project, what the code will look like, and how to improve it.
-The disadvantage of pull requests is that they are unlikely to get accepted
-without significant changes, or it may be rejected entirely. Don't worry, that
-won't happen without an open discussion first.
+The advantage of issues is that you don't have to spend time implementing your
+idea, but you should still describe it thoroughly as if someone reading it would
+implement the whole thing starting from scratch.
+
+The advantage of pull requests is that we can immediately see the impact the
+change will have on the project, what the code will look like, and how to
+improve it. The disadvantage of pull requests is that they are unlikely to get
+accepted without significant changes first, or it may be rejected entirely.
+Don't worry, that won't happen without an open discussion first.
 
-If you are going to spend significant time implementing code for a pull request,
-best to open an issue first and "claim" it and get feedback before you invest
-a lot of time.
+If you are going to spend significant time writing code for a new pull request,
+best to open an issue to "claim" it and get feedback before you invest a lot of
+time.
+
+Remember: pull requests should always be thoroughly documented both via godoc
+and with at least a rough draft of documentation that might go on the website
+for users to read.
 
 
 ### Collaborator status
@@ -75,6 +85,18 @@ push to the repository and merge other pull requests. We hope that you will
 stay involved by reviewing pull requests, submitting more of your own, and
 resolving issues as you are able to. Thanks for making Caddy amazing!
 
+We ask that collaborators will conduct thorough code reviews and be nice to
+new contributors. Before merging a PR, it's best to get the approval of
+at least one or two other collaborators and/or the project owner. We prefer
+squashed commits instead of many little, semantically-unimportant commits. Also,
+CI and other post-commit hooks must pass before being merged except in certain
+unusual circumstances.
+
+Collaborator status may be removed for inactive users from time to time as
+we see fit; this is not an insult, just a basic security precaution in case
+the account becomes inactive or abandoned. Privileges can always be restored
+later.
+
 
 ### Vulnerabilities
 

ISSUE_TEMPLATE

@@ -18,3 +18,7 @@
 
 
 #### 6. What did you see instead (give full error messages and/or log)?
+
+
+#### 7. How can someone who is starting from scratch reproduce this behavior as minimally as possible?
+

build.bash

@@ -17,6 +17,7 @@ set -euo pipefail
 : ${output_filename:="ecaddy"}
 
 : ${git_repo:="${2:-}"}
+: ${git_repo:="."}
 
 pkg=main
 ldflags=()

caddy/https/crypto_test.go

@@ -8,6 +8,7 @@ import (
 	"crypto/rand"
 	"crypto/rsa"
 	"crypto/x509"
+	"errors"
 	"os"
 	"runtime"
 	"testing"
@@ -95,17 +96,25 @@ func TestSaveAndLoadECCPrivateKey(t *testing.T) {
 
 // PrivateKeysSame compares the bytes of a and b and returns true if they are the same.
 func PrivateKeysSame(a, b crypto.PrivateKey) bool {
-	return bytes.Equal(PrivateKeyBytes(a), PrivateKeyBytes(b))
+	var abytes, bbytes []byte
+	var err error
+
+	if abytes, err = PrivateKeyBytes(a); err != nil {
+		return false
+	}
+	if bbytes, err = PrivateKeyBytes(b); err != nil {
+		return false
+	}
+	return bytes.Equal(abytes, bbytes)
 }
 
 // PrivateKeyBytes returns the bytes of DER-encoded key.
-func PrivateKeyBytes(key crypto.PrivateKey) []byte {
-	var keyBytes []byte
+func PrivateKeyBytes(key crypto.PrivateKey) ([]byte, error) {
 	switch key := key.(type) {
 	case *rsa.PrivateKey:
-		keyBytes = x509.MarshalPKCS1PrivateKey(key)
+		return x509.MarshalPKCS1PrivateKey(key), nil
 	case *ecdsa.PrivateKey:
-		keyBytes, _ = x509.MarshalECPrivateKey(key)
+		return x509.MarshalECPrivateKey(key)
 	}
-	return keyBytes
+	return nil, errors.New("Unknown private key type")
 }

caddy/https/maintain.go

@@ -112,12 +112,21 @@ func renewManagedCertificates(allowPrompts bool) (err error) {
 
 	// Apply changes to the cache
 	for _, cert := range renewed {
+		if cert.Names[len(cert.Names)-1] == "" {
+			// Special case: This is the default certificate, so we must
+			// ensure it gets updated as well, otherwise the renewal
+			// routine will find it and think it still needs to be renewed,
+			// even though we already renewed it...
+			certCacheMu.Lock()
+			delete(certCache, "")
+			certCacheMu.Unlock()
+		}
 		_, err := cacheManagedCertificate(cert.Names[0], cert.OnDemand)
 		if err != nil {
 			if client.AllowPrompts {
 				return err // operator is present, so report error immediately
 			}
-			log.Printf("[ERROR] %v", err)
+			log.Printf("[ERROR] Caching renewed certificate: %v", err)
 		}
 	}
 	for _, cert := range deleted {
@@ -178,7 +187,7 @@ func updateOCSPStaples() {
 		if err != nil {
 			if cert.OCSP != nil {
 				// if it was no staple before, that's fine, otherwise we should log the error
-				log.Printf("[ERROR] Checking OCSP for %s: %v", name, err)
+				log.Printf("[ERROR] Checking OCSP for %v: %v", cert.Names, err)
 			}
 			continue
 		}

caddy/restart.go

@@ -11,7 +11,7 @@ import (
 	"net"
 	"os"
 	"os/exec"
-	"path"
+	"path/filepath"
 	"sync/atomic"
 
 	"github.com/mholt/caddy/caddy/https"
@@ -138,7 +138,7 @@ func Restart(newCaddyfile Input) error {
 func getCertsForNewCaddyfile(newCaddyfile Input) error {
 	// parse the new caddyfile only up to (and including) TLS
 	// so we can know what we need to get certs for.
-	configs, _, _, err := loadConfigsUpToIncludingTLS(path.Base(newCaddyfile.Path()), bytes.NewReader(newCaddyfile.Body()))
+	configs, _, _, err := loadConfigsUpToIncludingTLS(filepath.Base(newCaddyfile.Path()), bytes.NewReader(newCaddyfile.Body()))
 	if err != nil {
 		return errors.New("loading Caddyfile: " + err.Error())
 	}

caddy/setup/browse.go

@@ -3,6 +3,7 @@ package setup
 import (
 	"fmt"
 	"io/ioutil"
+	"net/http"
 	"text/template"
 
 	"github.com/mholt/caddy/middleware"
@@ -17,7 +18,6 @@ func Browse(c *Controller) (middleware.Middleware, error) {
 	}
 
 	browse := browse.Browse{
-		Root:          c.Root,
 		Configs:       configs,
 		IgnoreIndexes: false,
 	}
@@ -50,6 +50,16 @@ func browseParse(c *Controller) ([]browse.Config, error) {
 		} else {
 			bc.PathScope = "/"
 		}
+		bc.Root = http.Dir(c.Root)
+		theRoot, err := bc.Root.Open("/") // catch a missing path early
+		if err != nil {
+			return configs, err
+		}
+		defer theRoot.Close()
+		_, err = theRoot.Readdir(-1)
+		if err != nil {
+			return configs, err
+		}
 
 		// Second argument would be the template file to use
 		var tplText string
@@ -85,7 +95,6 @@ const defaultTemplate = `<!DOCTYPE html>
 <html>
 	<head>
 		<title>{{.Name}}</title>
-		<meta charset="utf-8">
 		<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <style>
 * { padding: 0; margin: 0; }
@@ -106,7 +115,7 @@ h1 a:hover {
 }
 
 header,
-.content {
+#summary {
 	padding-left: 5%;
 	padding-right: 5%;
 }
@@ -306,43 +315,49 @@ footer {
 		</header>
 		<main>
 			<div class="meta">
-				<div class="content">
+				<div id="summary">
 					<span class="meta-item"><b>{{.NumDirs}}</b> director{{if eq 1 .NumDirs}}y{{else}}ies{{end}}</span>
 					<span class="meta-item"><b>{{.NumFiles}}</b> file{{if ne 1 .NumFiles}}s{{end}}</span>
+					{{- if ne 0 .ItemsLimitedTo}}
+					<span class="meta-item">(of which only <b>{{.ItemsLimitedTo}}</b> are displayed)</span>
+					{{- end}}
 				</div>
 			</div>
 			<div class="listing">
-				<table>
+				<table aria-describedby="summary">
+					<thead>
 					<tr>
 						<th>
-							{{if and (eq .Sort "name") (ne .Order "desc")}}
-							<a href="?sort=name&order=desc">Name <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a>
-							{{else if and (eq .Sort "name") (ne .Order "asc")}}
-							<a href="?sort=name&order=asc">Name <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a>
-							{{else}}
-							<a href="?sort=name&order=asc">Name</a>
-							{{end}}
+							{{- if and (eq .Sort "name") (ne .Order "desc")}}
+							<a href="?sort=name&order=desc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Name <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a>
+							{{- else if and (eq .Sort "name") (ne .Order "asc")}}
+							<a href="?sort=name&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Name <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a>
+							{{- else}}
+							<a href="?sort=name&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Name</a>
+							{{- end}}
 						</th>
 						<th>
-							{{if and (eq .Sort "size") (ne .Order "desc")}}
-							<a href="?sort=size&order=desc">Size <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a></a>
-							{{else if and (eq .Sort "size") (ne .Order "asc")}}
-							<a href="?sort=size&order=asc">Size <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a></a>
-							{{else}}
-							<a href="?sort=size&order=asc">Size</a>
-							{{end}}
+							{{- if and (eq .Sort "size") (ne .Order "desc")}}
+							<a href="?sort=size&order=desc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Size <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a></a>
+							{{- else if and (eq .Sort "size") (ne .Order "asc")}}
+							<a href="?sort=size&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Size <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a></a>
+							{{- else}}
+							<a href="?sort=size&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Size</a>
+							{{- end}}
 						</th>
 						<th class="hideable">
-							{{if and (eq .Sort "time") (ne .Order "desc")}}
-							<a href="?sort=time&order=desc">Modified <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a></a>
-							{{else if and (eq .Sort "time") (ne .Order "asc")}}
-							<a href="?sort=time&order=asc">Modified <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a></a>
-							{{else}}
-							<a href="?sort=time&order=asc">Modified</a>
-							{{end}}
+							{{- if and (eq .Sort "time") (ne .Order "desc")}}
+							<a href="?sort=time&order=desc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Modified <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#up-arrow"></use></svg></a></a>
+							{{- else if and (eq .Sort "time") (ne .Order "asc")}}
+							<a href="?sort=time&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Modified <svg width="1em" height=".4em" version="1.1" viewBox="0 0 12.922194 6.0358899"><use xlink:href="#down-arrow"></use></svg></a></a>
+							{{- else}}
+							<a href="?sort=time&order=asc{{if ne 0 .ItemsLimitedTo}}&limit={{.ItemsLimitedTo}}{{end}}">Modified</a>
+							{{- end}}
 						</th>
 					</tr>
-					{{if .CanGoUp}}
+					</thead>
+					<tbody>
+					{{- if .CanGoUp}}
 					<tr>
 						<td>
 							<a href="..">
@@ -350,30 +365,52 @@ footer {
 							</a>
 						</td>
 						<td>&mdash;</td>
-						<td>&mdash;</td>
+						<td class="hideable">&mdash;</td>
 					</tr>
-					{{end}}
-					{{range .Items}}
+					{{- end}}
+					{{- range .Items}}
 					<tr>
 						<td>
 							<a href="{{.URL}}">
-								{{if .IsDir}}
+								{{- if .IsDir}}
 								<svg width="1.5em" height="1em" version="1.1" viewBox="0 0 35.678803 28.527945"><use xlink:href="#folder"></use></svg>
-								{{else}}
+								{{- else}}
 								<svg width="1.5em" height="1em" version="1.1" viewBox="0 0 26.604381 29.144726"><use xlink:href="#file"></use></svg>
-								{{end}}
+								{{- end}}
 								<span class="name">{{.Name}}</span>
 							</a>
 						</td>
-						<td>{{.HumanSize}}</td>
-						<td class="hideable">{{.HumanModTime "01/02/2006 03:04:05 PM"}}</td>
+						{{- if .IsDir}}
+						<td data-order="-1">&mdash;</td>
+						{{- else}}
+						<td data-order="{{.Size}}">{{.HumanSize}}</td>
+						{{- end}}
+						<td class="hideable"><time datetime="{{.HumanModTime "2006-01-02T15:04:05Z"}}">{{.HumanModTime "01/02/2006 03:04:05 PM -07:00"}}</time></td>
 					</tr>
-					{{end}}
+					{{- end}}
+					</tbody>
 				</table>
 			</div>
 		</main>
 		<footer>
 			Served with <a href="https://caddyserver.com">Caddy</a>
 		</footer>
+		<script type="text/javascript">
+			function localizeDatetime(e, index, ar) {
+				if (e.textContent === undefined) {
+					return;
+				}
+				var d = new Date(e.getAttribute('datetime'));
+				if (isNaN(d)) {
+					d = new Date(e.textContent);
+					if (isNaN(d)) {
+						return;
+					}
+				}
+				e.textContent = d.toLocaleString();
+			}
+			var timeList = Array.prototype.slice.call(document.getElementsByTagName("time"));
+			timeList.forEach(localizeDatetime);
+		</script>
 	</body>
 </html>`

caddy/setup/ext.go

@@ -2,6 +2,7 @@ package setup
 
 import (
 	"os"
+	"path/filepath"
 
 	"github.com/mholt/caddy/middleware"
 	"github.com/mholt/caddy/middleware/extensions"
@@ -47,7 +48,7 @@ func extParse(c *Controller) ([]string, error) {
 // resourceExists returns true if the file specified at
 // root + path exists; false otherwise.
 func resourceExists(root, path string) bool {
-	_, err := os.Stat(root + path)
+	_, err := os.Stat(filepath.Join(root, path))
 	// technically we should use os.IsNotExist(err)
 	// but we don't handle any other kinds of errors anyway
 	return err == nil

caddy/setup/headers_test.go

@@ -38,14 +38,14 @@ func TestHeadersParse(t *testing.T) {
 		{`header /foo Foo "Bar Baz"`,
 			false, []headers.Rule{
 				{Path: "/foo", Headers: []headers.Header{
-					{"Foo", "Bar Baz"},
+					{Name: "Foo", Value: "Bar Baz"},
 				}},
 			}},
 		{`header /bar { Foo "Bar Baz" Baz Qux }`,
 			false, []headers.Rule{
 				{Path: "/bar", Headers: []headers.Header{
-					{"Foo", "Bar Baz"},
-					{"Baz", "Qux"},
+					{Name: "Foo", Value: "Bar Baz"},
+					{Name: "Baz", Value: "Qux"},
 				}},
 			}},
 	}

dist/CHANGES.txt

 CHANGES
 
 <master>
-- Built with Go 1.6.1
-- New pprof directive for exposing process performance profile
-- New expvar directive for exposing memory/GC performance
+- ...
+
+
+0.8.3 (April 26, 2016)
+- Built with Go 1.6.2
+- New pprof middleware for exposing process profiling endpoints
+- New expvar middleware for exposing memory/GC performance
 - New -restart option to force in-process restarts on Unix systems
 - Only fail to start if managed certificate is expired (issue #642)
 - Toggle case-sensitive path matching with environment variable
 - File server now adds ETag header for static files
+- browse: Replace .LinkedPath action with .BreadcrumbMap
 - fastcgi: New except clause to exclude paths
 - proxy: New max_conns setting to limit max connections per upstream
-- proxy: Enables replaceable value for name of upstream host
+- proxy: New replaceable value for name of upstream host
+- templates: New utility actions for dealing with strings
 - tls: Customize certificate key with key_type (+ECC)
-- Internal improvements and bug fixes
+- tls: Session ticket keys are now rotated
+- Many other minor internal improvements and bug fixes
+
 
 0.8.2 (February 25, 2016)
 - On-demand TLS can obtain certificates during handshakes

dist/README.txt

-CADDY 0.8.2
+CADDY 0.8.3
 
 Website
 	https://caddyserver.com

middleware/browse/browse_test.go

@@ -112,13 +112,12 @@ func TestBrowseHTTPMethods(t *testing.T) {
 
 	b := Browse{
 		Next: middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
-			t.Fatalf("Next shouldn't be called")
-			return 0, nil
+			return http.StatusTeapot, nil // not t.Fatalf, or we will not see what other methods yield
 		}),
-		Root: "./testdata",
 		Configs: []Config{
 			{
 				PathScope: "/photos",
+				Root:      http.Dir("./testdata"),
 				Template:  tmpl,
 			},
 		},
@@ -128,14 +127,8 @@ func TestBrowseHTTPMethods(t *testing.T) {
 	for method, expected := range map[string]int{
 		http.MethodGet:     http.StatusOK,
 		http.MethodHead:    http.StatusOK,
-		http.MethodOptions: http.StatusMethodNotAllowed,
-		http.MethodPost:    http.StatusMethodNotAllowed,
-		http.MethodPut:     http.StatusMethodNotAllowed,
-		http.MethodPatch:   http.StatusMethodNotAllowed,
-		http.MethodDelete:  http.StatusMethodNotAllowed,
-		"COPY":             http.StatusMethodNotAllowed,
-		"MOVE":             http.StatusMethodNotAllowed,
-		"MKCOL":            http.StatusMethodNotAllowed,
+		http.MethodOptions: http.StatusNotImplemented,
+		"PROPFIND":         http.StatusNotImplemented,
 	} {
 		req, err := http.NewRequest(method, "/photos/", nil)
 		if err != nil {
@@ -160,10 +153,10 @@ func TestBrowseTemplate(t *testing.T) {
 			t.Fatalf("Next shouldn't be called")
 			return 0, nil
 		}),
-		Root: "./testdata",
 		Configs: []Config{
 			{
 				PathScope: "/photos",
+				Root:      http.Dir("./testdata"),
 				Template:  tmpl,
 			},
 		},
@@ -215,16 +208,16 @@ func TestBrowseJson(t *testing.T) {
 			t.Fatalf("Next shouldn't be called")
 			return 0, nil
 		}),
-		Root: "./testdata",
 		Configs: []Config{
 			{
 				PathScope: "/photos/",
+				Root:      http.Dir("./testdata"),
 			},
 		},
 	}
 
 	//Getting the listing from the ./testdata/photos, the listing returned will be used to validate test results
-	testDataPath := b.Root + "/photos/"
+	testDataPath := filepath.Join("./testdata", "photos")
 	file, err := os.Open(testDataPath)
 	if err != nil {
 		if os.IsPermission(err) {
@@ -245,7 +238,7 @@ func TestBrowseJson(t *testing.T) {
 		// Tests fail in CI environment because all file mod times are the same for
 		// some reason, making the sorting unpredictable. To hack around this,
 		// we ensure here that each file has a different mod time.
-		chTime := f.ModTime().Add(-(time.Duration(i) * time.Second))
+		chTime := f.ModTime().UTC().Add(-(time.Duration(i) * time.Second))
 		if err := os.Chtimes(filepath.Join(testDataPath, name), chTime, chTime); err != nil {
 			t.Fatal(err)
 		}
@@ -322,7 +315,7 @@ func TestBrowseJson(t *testing.T) {
 		code, err := b.ServeHTTP(rec, req)
 
 		if code != http.StatusOK {
-			t.Fatalf("Wrong status, expected %d, got %d", http.StatusOK, code)
+			t.Fatalf("In test %d: Wrong status, expected %d, got %d", i, http.StatusOK, code)
 		}
 		if rec.HeaderMap.Get("Content-Type") != "application/json; charset=utf-8" {
 			t.Fatalf("Expected Content type to be application/json; charset=utf-8, but got %s ", rec.HeaderMap.Get("Content-Type"))

middleware/context.go

@@ -235,7 +235,7 @@ func (c Context) ToUpper(s string) string {
 	return strings.ToUpper(s)
 }
 
-// Split is a passthrough to strings.Split. It will split the first argument at each instance of the seperator and return a slice of strings.
+// Split is a passthrough to strings.Split. It will split the first argument at each instance of the separator and return a slice of strings.
 func (c Context) Split(s string, sep string) []string {
 	return strings.Split(s, sep)
 }

middleware/fastcgi/fcgiclient_test.go

@@ -200,7 +200,7 @@ func DisabledTest(t *testing.T) {
 		listener, err := net.Listen("tcp", ipPort)
 		if err != nil {
 			// handle error
-			log.Println("listener creatation failed: ", err)
+			log.Println("listener creation failed: ", err)
 		}
 
 		srv := new(FastCGIServer)

middleware/fileserver.go

@@ -2,10 +2,12 @@ package middleware
 
 import (
 	"fmt"
+	"math/rand"
 	"net/http"
 	"os"
 	"path"
 	"path/filepath"
+	"strconv"
 	"strings"
 )
 
@@ -40,12 +42,11 @@ type fileHandler struct {
 }
 
 func (fh *fileHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
-	upath := r.URL.Path
-	if !strings.HasPrefix(upath, "/") {
-		upath = "/" + upath
-		r.URL.Path = upath
+	// r.URL.Path has already been cleaned in caddy/server by path.Clean().
+	if r.URL.Path == "" {
+		r.URL.Path = "/"
 	}
-	return fh.serveFile(w, r, path.Clean(upath))
+	return fh.serveFile(w, r, r.URL.Path)
 }
 
 // serveFile writes the specified file to the HTTP response.
@@ -66,7 +67,8 @@ func (fh *fileHandler) serveFile(w http.ResponseWriter, r *http.Request, name st
 			return http.StatusForbidden, err
 		}
 		// Likely the server is under load and ran out of file descriptors
-		w.Header().Set("Retry-After", "5") // TODO: 5 seconds enough delay? Or too much?
+		backoff := int(3 + rand.Int31()%3) // 3–5 seconds to prevent a stampede
+		w.Header().Set("Retry-After", strconv.Itoa(backoff))
 		return http.StatusServiceUnavailable, err
 	}
 	defer f.Close()
@@ -86,13 +88,13 @@ func (fh *fileHandler) serveFile(w http.ResponseWriter, r *http.Request, name st
 	url := r.URL.Path
 	if d.IsDir() {
 		// Ensure / at end of directory url
-		if url[len(url)-1] != '/' {
+		if !strings.HasSuffix(url, "/") {
 			redirect(w, r, path.Base(url)+"/")
 			return http.StatusMovedPermanently, nil
 		}
 	} else {
 		// Ensure no / at end of file url
-		if url[len(url)-1] == '/' {
+		if strings.HasSuffix(url, "/") {
 			redirect(w, r, "../"+path.Base(url))
 			return http.StatusMovedPermanently, nil
 		}

middleware/fileserver_test.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"net/http/httptest"
+	"net/url"
 	"os"
 	"path/filepath"
 	"strings"
@@ -11,23 +12,30 @@ import (
 	"time"
 )
 
-var testDir = filepath.Join(os.TempDir(), "caddy_testdir")
-var ErrCustom = errors.New("Custom Error")
+var (
+	ErrCustom = errors.New("Custom Error")
+
+	testDir     = filepath.Join(os.TempDir(), "caddy_testdir")
+	testWebRoot = filepath.Join(testDir, "webroot")
+)
 
 // testFiles is a map with relative paths to test files as keys and file content as values.
 // The map represents the following structure:
 // - $TEMP/caddy_testdir/
-// '-- file1.html
-// '-- dirwithindex/
-// '---- index.html
-// '-- dir/
-// '---- file2.html
-// '---- hidden.html
+// '-- unreachable.html
+// '-- webroot/
+// '---- file1.html
+// '---- dirwithindex/
+// '------ index.html
+// '---- dir/
+// '------ file2.html
+// '------ hidden.html
 var testFiles = map[string]string{
-	"file1.html":                                "<h1>file1.html</h1>",
-	filepath.Join("dirwithindex", "index.html"): "<h1>dirwithindex/index.html</h1>",
-	filepath.Join("dir", "file2.html"):          "<h1>dir/file2.html</h1>",
-	filepath.Join("dir", "hidden.html"):         "<h1>dir/hidden.html</h1>",
+	"unreachable.html":                                     "<h1>must not leak</h1>",
+	filepath.Join("webroot", "file1.html"):                 "<h1>file1.html</h1>",
+	filepath.Join("webroot", "dirwithindex", "index.html"): "<h1>dirwithindex/index.html</h1>",
+	filepath.Join("webroot", "dir", "file2.html"):          "<h1>dir/file2.html</h1>",
+	filepath.Join("webroot", "dir", "hidden.html"):         "<h1>dir/hidden.html</h1>",
 }
 
 // TestServeHTTP covers positive scenarios when serving files.
@@ -36,7 +44,7 @@ func TestServeHTTP(t *testing.T) {
 	beforeServeHTTPTest(t)
 	defer afterServeHTTPTest(t)
 
-	fileserver := FileServer(http.Dir(testDir), []string{"dir/hidden.html"})
+	fileserver := FileServer(http.Dir(testWebRoot), []string{"dir/hidden.html"})
 
 	movedPermanently := "Moved Permanently"
 
@@ -142,11 +150,20 @@ func TestServeHTTP(t *testing.T) {
 			url:            "https://foo/hidden.html",
 			expectedStatus: http.StatusNotFound,
 		},
+		// Test 17 - try to get below the root directory.
+		{
+			url:            "https://foo/%2f..%2funreachable.html",
+			expectedStatus: http.StatusNotFound,
+		},
 	}
 
 	for i, test := range tests {
 		responseRecorder := httptest.NewRecorder()
-		request, err := http.NewRequest("GET", test.url, strings.NewReader(""))
+		request, err := http.NewRequest("GET", test.url, nil)
+		// prevent any URL sanitization within Go: we need unmodified paths here
+		if u, _ := url.Parse(test.url); u.RawPath != "" {
+			request.URL.Path = u.RawPath
+		}
 		status, err := fileserver.ServeHTTP(responseRecorder, request)
 		etag := responseRecorder.Header().Get("Etag")
 
@@ -176,7 +193,7 @@ func TestServeHTTP(t *testing.T) {
 // beforeServeHTTPTest creates a test directory with the structure, defined in the variable testFiles
 func beforeServeHTTPTest(t *testing.T) {
 	// make the root test dir
-	err := os.Mkdir(testDir, os.ModePerm)
+	err := os.MkdirAll(testWebRoot, os.ModePerm)
 	if err != nil {
 		if !os.IsExist(err) {
 			t.Fatalf("Failed to create test dir. Error was: %v", err)

middleware/headers/headers.go

@@ -20,13 +20,14 @@ type Headers struct {
 // ServeHTTP implements the middleware.Handler interface and serves requests,
 // setting headers on the response according to the configured rules.
 func (h Headers) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
+	replacer := middleware.NewReplacer(r, nil, "")
 	for _, rule := range h.Rules {
 		if middleware.Path(r.URL.Path).Matches(rule.Path) {
 			for _, header := range rule.Headers {
 				if strings.HasPrefix(header.Name, "-") {
 					w.Header().Del(strings.TrimLeft(header.Name, "-"))
 				} else {
-					w.Header().Set(header.Name, header.Value)
+					w.Header().Set(header.Name, replacer.Replace(header.Value))
 				}
 			}
 		}

middleware/headers/headers_test.go

@@ -3,12 +3,17 @@ package headers
 import (
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"testing"
 
 	"github.com/mholt/caddy/middleware"
 )
 
 func TestHeaders(t *testing.T) {
+	hostname, err := os.Hostname()
+	if err != nil {
+		t.Fatalf("Could not determine hostname: %v", err)
+	}
 	for i, test := range []struct {
 		from  string
 		name  string
@@ -17,6 +22,7 @@ func TestHeaders(t *testing.T) {
 		{"/a", "Foo", "Bar"},
 		{"/a", "Bar", ""},
 		{"/a", "Baz", ""},
+		{"/a", "ServerName", hostname},
 		{"/b", "Foo", ""},
 		{"/b", "Bar", "Removed in /a"},
 	} {
@@ -27,6 +33,7 @@ func TestHeaders(t *testing.T) {
 			Rules: []Rule{
 				{Path: "/a", Headers: []Header{
 					{Name: "Foo", Value: "Bar"},
+					{Name: "ServerName", Value: "{hostname}"},
 					{Name: "-Bar"},
 				}},
 			},

middleware/proxy/proxy.go

@@ -3,8 +3,10 @@ package proxy
 
 import (
 	"errors"
+	"net"
 	"net/http"
 	"net/url"
+	"strings"
 	"sync/atomic"
 	"time"
 
@@ -41,7 +43,8 @@ type UpstreamHost struct {
 	Fails             int32
 	FailTimeout       time.Duration
 	Unhealthy         bool
-	ExtraHeaders      http.Header
+	UpstreamHeaders   http.Header
+	DownstreamHeaders http.Header
 	CheckDown         UpstreamHostDownFunc
 	WithoutPathPrefix string
 	MaxConns          int64
@@ -75,71 +78,160 @@ var tryDuration = 60 * time.Second
 // ServeHTTP satisfies the middleware.Handler interface.
 func (p Proxy) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
 	for _, upstream := range p.Upstreams {
-		if middleware.Path(r.URL.Path).Matches(upstream.From()) && upstream.AllowedPath(r.URL.Path) {
-			var replacer middleware.Replacer
-			start := time.Now()
-			requestHost := r.Host
-
-			// Since Select() should give us "up" hosts, keep retrying
-			// hosts until timeout (or until we get a nil host).
-			for time.Now().Sub(start) < tryDuration {
-				host := upstream.Select()
-				if host == nil {
-					return http.StatusBadGateway, errUnreachable
-				}
-				proxy := host.ReverseProxy
-				r.Host = host.Name
-				if rr, ok := w.(*middleware.ResponseRecorder); ok && rr.Replacer != nil {
-					rr.Replacer.Set("upstream", host.Name)
-				}
+		if !middleware.Path(r.URL.Path).Matches(upstream.From()) ||
+			!upstream.AllowedPath(r.URL.Path) {
+			continue
+		}
+
+		var replacer middleware.Replacer
+		start := time.Now()
+
+		outreq := createUpstreamRequest(r)
 
-				if baseURL, err := url.Parse(host.Name); err == nil {
-					r.Host = baseURL.Host
-					if proxy == nil {
-						proxy = NewSingleHostReverseProxy(baseURL, host.WithoutPathPrefix)
-					}
-				} else if proxy == nil {
-					return http.StatusInternalServerError, err
+		// Since Select() should give us "up" hosts, keep retrying
+		// hosts until timeout (or until we get a nil host).
+		for time.Now().Sub(start) < tryDuration {
+			host := upstream.Select()
+			if host == nil {
+				return http.StatusBadGateway, errUnreachable
+			}
+			if rr, ok := w.(*middleware.ResponseRecorder); ok && rr.Replacer != nil {
+				rr.Replacer.Set("upstream", host.Name)
+			}
+
+			outreq.Host = host.Name
+			if host.UpstreamHeaders != nil {
+				if replacer == nil {
+					rHost := r.Host
+					replacer = middleware.NewReplacer(r, nil, "")
+					outreq.Host = rHost
 				}
-				var extraHeaders http.Header
-				if host.ExtraHeaders != nil {
-					extraHeaders = make(http.Header)
-					if replacer == nil {
-						rHost := r.Host
-						r.Host = requestHost
-						replacer = middleware.NewReplacer(r, nil, "")
-						r.Host = rHost
-					}
-					for header, values := range host.ExtraHeaders {
-						for _, value := range values {
-							extraHeaders.Add(header,
-								replacer.Replace(value))
-							if header == "Host" {
-								r.Host = replacer.Replace(value)
-							}
-						}
-					}
+				if v, ok := host.UpstreamHeaders["Host"]; ok {
+					r.Host = replacer.Replace(v[len(v)-1])
 				}
+				// Modify headers for request that will be sent to the upstream host
+				upHeaders := createHeadersByRules(host.UpstreamHeaders, r.Header, replacer)
+				for k, v := range upHeaders {
+					outreq.Header[k] = v
+				}
+			}
 
-				atomic.AddInt64(&host.Conns, 1)
-				backendErr := proxy.ServeHTTP(w, r, extraHeaders)
-				atomic.AddInt64(&host.Conns, -1)
-				if backendErr == nil {
-					return 0, nil
+			var downHeaderUpdateFn respUpdateFn
+			if host.DownstreamHeaders != nil {
+				if replacer == nil {
+					rHost := r.Host
+					replacer = middleware.NewReplacer(r, nil, "")
+					outreq.Host = rHost
 				}
-				timeout := host.FailTimeout
-				if timeout == 0 {
-					timeout = 10 * time.Second
+				//Creates a function that is used to update headers the response received by the reverse proxy
+				downHeaderUpdateFn = createRespHeaderUpdateFn(host.DownstreamHeaders, replacer)
+			}
+
+			proxy := host.ReverseProxy
+			if baseURL, err := url.Parse(host.Name); err == nil {
+				r.Host = baseURL.Host
+				if proxy == nil {
+					proxy = NewSingleHostReverseProxy(baseURL, host.WithoutPathPrefix)
 				}
-				atomic.AddInt32(&host.Fails, 1)
-				go func(host *UpstreamHost, timeout time.Duration) {
-					time.Sleep(timeout)
-					atomic.AddInt32(&host.Fails, -1)
-				}(host, timeout)
+			} else if proxy == nil {
+				return http.StatusInternalServerError, err
+			}
+
+			atomic.AddInt64(&host.Conns, 1)
+			backendErr := proxy.ServeHTTP(w, outreq, downHeaderUpdateFn)
+			atomic.AddInt64(&host.Conns, -1)
+			if backendErr == nil {
+				return 0, nil
+			}
+			timeout := host.FailTimeout
+			if timeout == 0 {
+				timeout = 10 * time.Second
 			}
-			return http.StatusBadGateway, errUnreachable
+			atomic.AddInt32(&host.Fails, 1)
+			go func(host *UpstreamHost, timeout time.Duration) {
+				time.Sleep(timeout)
+				atomic.AddInt32(&host.Fails, -1)
+			}(host, timeout)
 		}
+		return http.StatusBadGateway, errUnreachable
 	}
 
 	return p.Next.ServeHTTP(w, r)
 }
+
+// createUpstremRequest shallow-copies r into a new request
+// that can be sent upstream.
+func createUpstreamRequest(r *http.Request) *http.Request {
+	outreq := new(http.Request)
+	*outreq = *r // includes shallow copies of maps, but okay
+
+	// Remove hop-by-hop headers to the backend.  Especially
+	// important is "Connection" because we want a persistent
+	// connection, regardless of what the client sent to us.  This
+	// is modifying the same underlying map from r (shallow
+	// copied above) so we only copy it if necessary.
+	for _, h := range hopHeaders {
+		if outreq.Header.Get(h) != "" {
+			outreq.Header = make(http.Header)
+			copyHeader(outreq.Header, r.Header)
+			outreq.Header.Del(h)
+		}
+	}
+
+	if clientIP, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
+		// If we aren't the first proxy, retain prior
+		// X-Forwarded-For information as a comma+space
+		// separated list and fold multiple headers into one.
+		if prior, ok := outreq.Header["X-Forwarded-For"]; ok {
+			clientIP = strings.Join(prior, ", ") + ", " + clientIP
+		}
+		outreq.Header.Set("X-Forwarded-For", clientIP)
+	}
+
+	return outreq
+}
+
+func createRespHeaderUpdateFn(rules http.Header, replacer middleware.Replacer) respUpdateFn {
+	return func(resp *http.Response) {
+		newHeaders := createHeadersByRules(rules, resp.Header, replacer)
+		for h, v := range newHeaders {
+			resp.Header[h] = v
+		}
+	}
+}
+
+func createHeadersByRules(rules http.Header, base http.Header, repl middleware.Replacer) http.Header {
+	newHeaders := make(http.Header)
+	for header, values := range rules {
+		if strings.HasPrefix(header, "+") {
+			header = strings.TrimLeft(header, "+")
+			add(newHeaders, header, base[header])
+			applyEach(values, repl.Replace)
+			add(newHeaders, header, values)
+		} else if strings.HasPrefix(header, "-") {
+			base.Del(strings.TrimLeft(header, "-"))
+		} else if _, ok := base[header]; ok {
+			applyEach(values, repl.Replace)
+			for _, v := range values {
+				newHeaders.Set(header, v)
+			}
+		} else {
+			applyEach(values, repl.Replace)
+			add(newHeaders, header, values)
+			add(newHeaders, header, base[header])
+		}
+	}
+	return newHeaders
+}
+
+func applyEach(values []string, mapFn func(string) string) {
+	for i, v := range values {
+		values[i] = mapFn(v)
+	}
+}
+
+func add(base http.Header, header string, values []string) {
+	for _, v := range values {
+		base.Add(header, v)
+	}
+}

middleware/proxy/proxy_test.go

@@ -348,6 +348,141 @@ func TestUnixSocketProxyPaths(t *testing.T) {
 	}
 }
 
+func TestUpstreamHeadersUpdate(t *testing.T) {
+	log.SetOutput(ioutil.Discard)
+	defer log.SetOutput(os.Stderr)
+
+	var actualHeaders http.Header
+	backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("Hello, client"))
+		actualHeaders = r.Header
+	}))
+	defer backend.Close()
+
+	upstream := newFakeUpstream(backend.URL, false)
+	upstream.host.UpstreamHeaders = http.Header{
+		"Connection": {"{>Connection}"},
+		"Upgrade":    {"{>Upgrade}"},
+		"+Merge-Me":  {"Merge-Value"},
+		"+Add-Me":    {"Add-Value"},
+		"-Remove-Me": {""},
+		"Replace-Me": {"{hostname}"},
+	}
+	// set up proxy
+	p := &Proxy{
+		Upstreams: []Upstream{upstream},
+	}
+
+	// create request and response recorder
+	r, err := http.NewRequest("GET", "/", nil)
+	if err != nil {
+		t.Fatalf("Failed to create request: %v", err)
+	}
+	w := httptest.NewRecorder()
+
+	//add initial headers
+	r.Header.Add("Merge-Me", "Initial")
+	r.Header.Add("Remove-Me", "Remove-Value")
+	r.Header.Add("Replace-Me", "Replace-Value")
+
+	p.ServeHTTP(w, r)
+
+	replacer := middleware.NewReplacer(r, nil, "")
+
+	headerKey := "Merge-Me"
+	values, ok := actualHeaders[headerKey]
+	if !ok {
+		t.Errorf("Request sent to upstream backend does not contain expected %v header. Expected header to be added", headerKey)
+	} else if len(values) < 2 && (values[0] != "Initial" || values[1] != replacer.Replace("{hostname}")) {
+		t.Errorf("Values for proxy header `+Merge-Me` should be merged. Got %v", values)
+	}
+
+	headerKey = "Add-Me"
+	if _, ok := actualHeaders[headerKey]; !ok {
+		t.Errorf("Request sent to upstream backend does not contain expected %v header", headerKey)
+	}
+
+	headerKey = "Remove-Me"
+	if _, ok := actualHeaders[headerKey]; ok {
+		t.Errorf("Request sent to upstream backend should not contain %v header", headerKey)
+	}
+
+	headerKey = "Replace-Me"
+	headerValue := replacer.Replace("{hostname}")
+	value, ok := actualHeaders[headerKey]
+	if !ok {
+		t.Errorf("Request sent to upstream backend should not remove %v header", headerKey)
+	} else if len(value) > 0 && headerValue != value[0] {
+		t.Errorf("Request sent to upstream backend should replace value of %v header with %v. Instead value was %v", headerKey, headerValue, value)
+	}
+
+}
+
+func TestDownstreamHeadersUpdate(t *testing.T) {
+	log.SetOutput(ioutil.Discard)
+	defer log.SetOutput(os.Stderr)
+
+	backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Add("Merge-Me", "Initial")
+		w.Header().Add("Remove-Me", "Remove-Value")
+		w.Header().Add("Replace-Me", "Replace-Value")
+		w.Write([]byte("Hello, client"))
+	}))
+	defer backend.Close()
+
+	upstream := newFakeUpstream(backend.URL, false)
+	upstream.host.DownstreamHeaders = http.Header{
+		"+Merge-Me":  {"Merge-Value"},
+		"+Add-Me":    {"Add-Value"},
+		"-Remove-Me": {""},
+		"Replace-Me": {"{hostname}"},
+	}
+	// set up proxy
+	p := &Proxy{
+		Upstreams: []Upstream{upstream},
+	}
+
+	// create request and response recorder
+	r, err := http.NewRequest("GET", "/", nil)
+	if err != nil {
+		t.Fatalf("Failed to create request: %v", err)
+	}
+	w := httptest.NewRecorder()
+
+	p.ServeHTTP(w, r)
+
+	replacer := middleware.NewReplacer(r, nil, "")
+	actualHeaders := w.Header()
+
+	headerKey := "Merge-Me"
+	values, ok := actualHeaders[headerKey]
+	if !ok {
+		t.Errorf("Downstream response does not contain expected %v header. Expected header should be added", headerKey)
+	} else if len(values) < 2 && (values[0] != "Initial" || values[1] != replacer.Replace("{hostname}")) {
+		t.Errorf("Values for header `+Merge-Me` should be merged. Got %v", values)
+	}
+
+	headerKey = "Add-Me"
+	if _, ok := actualHeaders[headerKey]; !ok {
+		t.Errorf("Downstream response does not contain expected %v header", headerKey)
+	}
+
+	headerKey = "Remove-Me"
+	if _, ok := actualHeaders[headerKey]; ok {
+		t.Errorf("Downstream response should not contain %v header received from upstream", headerKey)
+	}
+
+	headerKey = "Replace-Me"
+	headerValue := replacer.Replace("{hostname}")
+	value, ok := actualHeaders[headerKey]
+	if !ok {
+		t.Errorf("Downstream response should contain %v header and not remove it", headerKey)
+	} else if len(value) > 0 && headerValue != value[0] {
+		t.Errorf("Downstream response should have header %v with value %v. Instead value was %v", headerKey, headerValue, value)
+	}
+
+}
+
 func newFakeUpstream(name string, insecure bool) *fakeUpstream {
 	uri, _ := url.Parse(name)
 	u := &fakeUpstream{
@@ -410,7 +545,7 @@ func (u *fakeWsUpstream) Select() *UpstreamHost {
 	return &UpstreamHost{
 		Name:         u.name,
 		ReverseProxy: NewSingleHostReverseProxy(uri, u.without),
-		ExtraHeaders: http.Header{
+		UpstreamHeaders: http.Header{
 			"Connection": {"{>Connection}"},
 			"Upgrade":    {"{>Upgrade}"}},
 	}

middleware/proxy/reverseproxy.go

@@ -154,57 +154,25 @@ var InsecureTransport http.RoundTripper = &http.Transport{
 	TLSClientConfig:     &tls.Config{InsecureSkipVerify: true},
 }
 
-func (p *ReverseProxy) ServeHTTP(rw http.ResponseWriter, req *http.Request, extraHeaders http.Header) error {
+type respUpdateFn func(resp *http.Response)
+
+func (p *ReverseProxy) ServeHTTP(rw http.ResponseWriter, outreq *http.Request, respUpdateFn respUpdateFn) error {
 	transport := p.Transport
 	if transport == nil {
 		transport = http.DefaultTransport
 	}
 
-	outreq := new(http.Request)
-	*outreq = *req // includes shallow copies of maps, but okay
-
 	p.Director(outreq)
 	outreq.Proto = "HTTP/1.1"
 	outreq.ProtoMajor = 1
 	outreq.ProtoMinor = 1
 	outreq.Close = false
 
-	// Remove hop-by-hop headers to the backend.  Especially
-	// important is "Connection" because we want a persistent
-	// connection, regardless of what the client sent to us.  This
-	// is modifying the same underlying map from req (shallow
-	// copied above) so we only copy it if necessary.
-	copiedHeaders := false
-	for _, h := range hopHeaders {
-		if outreq.Header.Get(h) != "" {
-			if !copiedHeaders {
-				outreq.Header = make(http.Header)
-				copyHeader(outreq.Header, req.Header)
-				copiedHeaders = true
-			}
-			outreq.Header.Del(h)
-		}
-	}
-
-	if clientIP, _, err := net.SplitHostPort(req.RemoteAddr); err == nil {
-		// If we aren't the first proxy retain prior
-		// X-Forwarded-For information as a comma+space
-		// separated list and fold multiple headers into one.
-		if prior, ok := outreq.Header["X-Forwarded-For"]; ok {
-			clientIP = strings.Join(prior, ", ") + ", " + clientIP
-		}
-		outreq.Header.Set("X-Forwarded-For", clientIP)
-	}
-
-	if extraHeaders != nil {
-		for k, v := range extraHeaders {
-			outreq.Header[k] = v
-		}
-	}
-
 	res, err := transport.RoundTrip(outreq)
 	if err != nil {
 		return err
+	} else if respUpdateFn != nil {
+		respUpdateFn(res)
 	}
 
 	if res.StatusCode == http.StatusSwitchingProtocols && strings.ToLower(res.Header.Get("Upgrade")) == "websocket" {
@@ -237,9 +205,7 @@ func (p *ReverseProxy) ServeHTTP(rw http.ResponseWriter, req *http.Request, extr
 		for _, h := range hopHeaders {
 			res.Header.Del(h)
 		}
-
 		copyHeader(rw.Header(), res.Header)
-
 		rw.WriteHeader(res.StatusCode)
 		p.copyResponse(rw, res.Body)
 	}
@@ -260,7 +226,6 @@ func (p *ReverseProxy) copyResponse(dst io.Writer, src io.Reader) {
 			dst = mlw
 		}
 	}
-
 	io.Copy(dst, src)
 }
 

middleware/proxy/upstream.go

@@ -20,7 +20,8 @@ var (
 
 type staticUpstream struct {
 	from               string
-	proxyHeaders       http.Header
+	upstreamHeaders    http.Header
+	downstreamHeaders  http.Header
 	Hosts              HostPool
 	Policy             Policy
 	insecureSkipVerify bool
@@ -42,13 +43,14 @@ func NewStaticUpstreams(c parse.Dispenser) ([]Upstream, error) {
 	var upstreams []Upstream
 	for c.Next() {
 		upstream := &staticUpstream{
-			from:         "",
-			proxyHeaders: make(http.Header),
-			Hosts:        nil,
-			Policy:       &Random{},
-			FailTimeout:  10 * time.Second,
-			MaxFails:     1,
-			MaxConns:     0,
+			from:              "",
+			upstreamHeaders:   make(http.Header),
+			downstreamHeaders: make(http.Header),
+			Hosts:             nil,
+			Policy:            &Random{},
+			FailTimeout:       10 * time.Second,
+			MaxFails:          1,
+			MaxConns:          0,
 		}
 
 		if !c.Args(&upstream.from) {
@@ -97,12 +99,13 @@ func (u *staticUpstream) NewHost(host string) (*UpstreamHost, error) {
 		host = "http://" + host
 	}
 	uh := &UpstreamHost{
-		Name:         host,
-		Conns:        0,
-		Fails:        0,
-		FailTimeout:  u.FailTimeout,
-		Unhealthy:    false,
-		ExtraHeaders: u.proxyHeaders,
+		Name:              host,
+		Conns:             0,
+		Fails:             0,
+		FailTimeout:       u.FailTimeout,
+		Unhealthy:         false,
+		UpstreamHeaders:   u.upstreamHeaders,
+		DownstreamHeaders: u.downstreamHeaders,
 		CheckDown: func(u *staticUpstream) UpstreamHostDownFunc {
 			return func(uh *UpstreamHost) bool {
 				if uh.Unhealthy {
@@ -182,15 +185,23 @@ func parseBlock(c *parse.Dispenser, u *staticUpstream) error {
 			}
 			u.HealthCheck.Interval = dur
 		}
+	case "header_upstream":
+		fallthrough
 	case "proxy_header":
 		var header, value string
 		if !c.Args(&header, &value) {
 			return c.ArgErr()
 		}
-		u.proxyHeaders.Add(header, value)
+		u.upstreamHeaders.Add(header, value)
+	case "header_downstream":
+		var header, value string
+		if !c.Args(&header, &value) {
+			return c.ArgErr()
+		}
+		u.downstreamHeaders.Add(header, value)
 	case "websocket":
-		u.proxyHeaders.Add("Connection", "{>Connection}")
-		u.proxyHeaders.Add("Upgrade", "{>Upgrade}")
+		u.upstreamHeaders.Add("Connection", "{>Connection}")
+		u.upstreamHeaders.Add("Upgrade", "{>Upgrade}")
 	case "without":
 		if !c.NextArg() {
 			return c.ArgErr()

middleware/replacer.go

@@ -4,6 +4,7 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"os"
 	"path"
 	"strconv"
 	"strings"
@@ -52,6 +53,13 @@ func NewReplacer(r *http.Request, rr *ResponseRecorder, emptyValue string) Repla
 				}
 				return "http"
 			}(),
+			"{hostname}": func() string {
+				name, err := os.Hostname()
+				if err != nil {
+					return ""
+				}
+				return name
+			}(),
 			"{host}":          r.Host,
 			"{path}":          r.URL.Path,
 			"{path_escaped}":  url.QueryEscape(r.URL.Path),

middleware/replacer_test.go

@@ -3,6 +3,7 @@ package middleware
 import (
 	"net/http"
 	"net/http/httptest"
+	"os"
 	"strings"
 	"testing"
 )
@@ -53,6 +54,14 @@ func TestReplace(t *testing.T) {
 	request.Header.Set("ShorterVal", "1")
 	repl := NewReplacer(request, recordRequest, "-")
 
+	hostname, err := os.Hostname()
+	if err != nil {
+		t.Fatal("Failed to determine hostname\n")
+	}
+	if expected, actual := "This hostname is "+hostname, repl.Replace("This hostname is {hostname}"); expected != actual {
+		t.Errorf("{hostname} replacement: expected '%s', got '%s'", expected, actual)
+	}
+
 	if expected, actual := "This host is localhost.", repl.Replace("This host is {host}."); expected != actual {
 		t.Errorf("{host} replacement: expected '%s', got '%s'", expected, actual)
 	}

server/server.go

@@ -14,7 +14,7 @@ import (
 	"net"
 	"net/http"
 	"os"
-	"path/filepath"
+	"path"
 	"runtime"
 	"strings"
 	"sync"
@@ -336,11 +336,18 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	// Use URL.RawPath If you need the original, "raw" URL.Path in your middleware.
 	// Collapse any ./ ../ /// madness here instead of doing that in every plugin.
 	if r.URL.Path != "/" {
-		path := filepath.Clean(r.URL.Path)
-		if !strings.HasPrefix(path, "/") {
-			path = "/" + path
+		cleanedPath := path.Clean(r.URL.Path)
+		if cleanedPath == "." {
+			r.URL.Path = "/"
+		} else {
+			if !strings.HasPrefix(cleanedPath, "/") {
+				cleanedPath = "/" + cleanedPath
+			}
+			if strings.HasSuffix(r.URL.Path, "/") && !strings.HasSuffix(cleanedPath, "/") {
+				cleanedPath = cleanedPath + "/"
+			}
+			r.URL.Path = cleanedPath
 		}
-		r.URL.Path = path
 	}
 
 	// Execute the optional request callback if it exists and it's not disabled
@@ -438,6 +445,7 @@ func standaloneTLSTicketKeyRotation(c *tls.Config, timer *time.Ticker, exitChan
 		c.SessionTicketsDisabled = true // bail if we don't have the entropy for the first one
 		return
 	}
+	c.SessionTicketKey = keys[0] // SetSessionTicketKeys doesn't set a 'tls.keysAlreadSet'
 	c.SetSessionTicketKeys(setSessionTicketKeysTestHook(keys))
 
 	for {