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Backport #31003 by wxiaoguang Fix #31002 1. Mention Make sure `Host` and `X-Fowarded-Proto` headers are correctly passed to Gitea 2. Clarify the basic requirements and move the "general configuration" to the top 3. Add a comment for the "container registry" 4. Use 1.21 behavior if the reverse proxy is not correctly configured Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
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@ -17,15 +17,35 @@ menu:
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# Reverse Proxies
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## General configuration
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1. Set `[server] ROOT_URL = https://git.example.com/` in your `app.ini` file.
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2. Make the reverse-proxy pass `https://git.example.com/foo` to `http://gitea:3000/foo`.
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3. Make sure the reverse-proxy does not decode the URI. The request `https://git.example.com/a%2Fb` should be passed as `http://gitea:3000/a%2Fb`.
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4. Make sure `Host` and `X-Fowarded-Proto` headers are correctly passed to Gitea to make Gitea see the real URL being visited.
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### Use a sub-path
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Usually it's **not recommended** to put Gitea in a sub-path, it's not widely used and may have some issues in rare cases.
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To make Gitea work with a sub-path (eg: `https://common.example.com/gitea/`),
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there are some extra requirements besides the general configuration above:
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1. Use `[server] ROOT_URL = https://common.example.com/gitea/` in your `app.ini` file.
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2. Make the reverse-proxy pass `https://common.example.com/gitea/foo` to `http://gitea:3000/foo`.
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3. The container registry requires a fixed sub-path `/v2` at the root level which must be configured:
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- Make the reverse-proxy pass `https://common.example.com/v2` to `http://gitea:3000/v2`.
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- Make sure the URI and headers are also correctly passed (see the general configuration above).
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## Nginx
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If you want Nginx to serve your Gitea instance, add the following `server` section to the `http` section of `nginx.conf`:
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If you want Nginx to serve your Gitea instance, add the following `server` section to the `http` section of `nginx.conf`.
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```
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Make sure `client_max_body_size` is large enough, otherwise there would be "413 Request Entity Too Large" error when uploading large files.
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```nginx
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server {
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listen 80;
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server_name git.example.com;
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...
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location / {
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client_max_body_size 512M;
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proxy_pass http://localhost:3000;
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@ -39,37 +59,35 @@ server {
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}
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```
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### Resolving Error: 413 Request Entity Too Large
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This error indicates nginx is configured to restrict the file upload size,
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it affects attachment uploading, form posting, package uploading and LFS pushing, etc.
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You can fine tune the `client_max_body_size` option according to [nginx document](http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size).
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## Nginx with a sub-path
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In case you already have a site, and you want Gitea to share the domain name, you can setup Nginx to serve Gitea under a sub-path by adding the following `server` section inside the `http` section of `nginx.conf`:
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In case you already have a site, and you want Gitea to share the domain name,
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you can setup Nginx to serve Gitea under a sub-path by adding the following `server` section
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into the `http` section of `nginx.conf`:
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```
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```nginx
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server {
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listen 80;
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server_name git.example.com;
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# Note: Trailing slash
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location /gitea/ {
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...
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location ~ ^/(gitea|v2)($|/) {
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client_max_body_size 512M;
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# make nginx use unescaped URI, keep "%2F" as is
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# make nginx use unescaped URI, keep "%2F" as-is, remove the "/gitea" sub-path prefix, pass "/v2" as-is.
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rewrite ^ $request_uri;
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rewrite ^/gitea(/.*) $1 break;
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rewrite ^(/gitea)?(/.*) $2 break;
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proxy_pass http://127.0.0.1:3000$uri;
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# other common HTTP headers, see the "Nginx" config section above
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proxy_set_header ...
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proxy_set_header Connection $http_connection;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Host $host;
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Forwarded-Proto $scheme;
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}
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}
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```
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Then you **MUST** set something like `[server] ROOT_URL = http://git.example.com/git/` correctly in your configuration.
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Then you **MUST** set something like `[server] ROOT_URL = http://git.example.com/gitea/` correctly in your configuration.
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## Nginx and serve static resources directly
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@ -93,7 +111,7 @@ or use a cdn for the static files.
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Set `[server] STATIC_URL_PREFIX = /_/static` in your configuration.
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```apacheconf
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```nginx
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server {
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listen 80;
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server_name git.example.com;
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@ -112,7 +130,7 @@ server {
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Set `[server] STATIC_URL_PREFIX = http://cdn.example.com/gitea` in your configuration.
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```apacheconf
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```nginx
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# application server running Gitea
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server {
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listen 80;
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@ -124,7 +142,7 @@ server {
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}
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```
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```apacheconf
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```nginx
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# static content delivery server
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server {
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listen 80;
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@ -151,6 +169,8 @@ If you want Apache HTTPD to serve your Gitea instance, you can add the following
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ProxyRequests off
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AllowEncodedSlashes NoDecode
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ProxyPass / http://localhost:3000/ nocanon
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ProxyPreserveHost On
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RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
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</VirtualHost>
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```
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@ -172,6 +192,8 @@ In case you already have a site, and you want Gitea to share the domain name, yo
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AllowEncodedSlashes NoDecode
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# Note: no trailing slash after either /git or port
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ProxyPass /git http://localhost:3000 nocanon
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ProxyPreserveHost On
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RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
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</VirtualHost>
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```
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@ -183,7 +205,7 @@ Note: The following Apache HTTPD mods must be enabled: `proxy`, `proxy_http`.
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If you want Caddy to serve your Gitea instance, you can add the following server block to your Caddyfile:
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```apacheconf
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```
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git.example.com {
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reverse_proxy localhost:3000
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}
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@ -193,7 +215,7 @@ git.example.com {
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In case you already have a site, and you want Gitea to share the domain name, you can setup Caddy to serve Gitea under a sub-path by adding the following to your server block in your Caddyfile:
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```apacheconf
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```
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git.example.com {
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route /git/* {
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uri strip_prefix /git
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@ -371,19 +393,3 @@ gitea:
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This config assumes that you are handling HTTPS on the traefik side and using HTTP between Gitea and traefik.
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Then you **MUST** set something like `[server] ROOT_URL = http://example.com/gitea/` correctly in your configuration.
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## General sub-path configuration
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Usually it's not recommended to put Gitea in a sub-path, it's not widely used and may have some issues in rare cases.
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If you really need to do so, to make Gitea works with sub-path (eg: `http://example.com/gitea/`), here are the requirements:
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1. Set `[server] ROOT_URL = http://example.com/gitea/` in your `app.ini` file.
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2. Make the reverse-proxy pass `http://example.com/gitea/foo` to `http://gitea-server:3000/foo`.
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3. Make sure the reverse-proxy not decode the URI, the request `http://example.com/gitea/a%2Fb` should be passed as `http://gitea-server:3000/a%2Fb`.
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## Docker / Container Registry
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The container registry uses a fixed sub-path `/v2` which can't be changed.
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Even if you deploy Gitea with a different sub-path, `/v2` will be used by the `docker` client.
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Therefore you may need to add an additional route to your reverse proxy configuration.
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@ -32,7 +32,7 @@ func IsRelativeURL(s string) bool {
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return err == nil && urlIsRelative(s, u)
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}
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func guessRequestScheme(req *http.Request, def string) string {
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func getRequestScheme(req *http.Request) string {
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// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto
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if s := req.Header.Get("X-Forwarded-Proto"); s != "" {
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return s
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@ -49,10 +49,10 @@ func guessRequestScheme(req *http.Request, def string) string {
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if s := req.Header.Get("X-Forwarded-Ssl"); s != "" {
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return util.Iif(s == "on", "https", "http")
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}
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return def
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return ""
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}
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func guessForwardedHost(req *http.Request) string {
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func getForwardedHost(req *http.Request) string {
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// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host
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return req.Header.Get("X-Forwarded-Host")
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}
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@ -63,15 +63,24 @@ func GuessCurrentAppURL(ctx context.Context) string {
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if !ok {
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return setting.AppURL
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}
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if host := guessForwardedHost(req); host != "" {
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// if it is behind a reverse proxy, use "https" as default scheme in case the site admin forgets to set the correct forwarded-protocol headers
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return guessRequestScheme(req, "https") + "://" + host + setting.AppSubURL + "/"
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} else if req.Host != "" {
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// if it is not behind a reverse proxy, use the scheme from config options, meanwhile use "https" as much as possible
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defaultScheme := util.Iif(setting.Protocol == "http", "http", "https")
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return guessRequestScheme(req, defaultScheme) + "://" + req.Host + setting.AppSubURL + "/"
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// If no scheme provided by reverse proxy, then do not guess the AppURL, use the configured one.
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// At the moment, if site admin doesn't configure the proxy headers correctly, then Gitea would guess wrong.
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// There are some cases:
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// 1. The reverse proxy is configured correctly, it passes "X-Forwarded-Proto/Host" headers. Perfect, Gitea can handle it correctly.
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// 2. The reverse proxy is not configured correctly, doesn't pass "X-Forwarded-Proto/Host" headers, eg: only one "proxy_pass http://gitea:3000" in Nginx.
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// 3. There is no reverse proxy.
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// Without an extra config option, Gitea is impossible to distinguish between case 2 and case 3,
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// then case 2 would result in wrong guess like guessed AppURL becomes "http://gitea:3000/", which is not accessible by end users.
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// So in the future maybe it should introduce a new config option, to let site admin decide how to guess the AppURL.
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reqScheme := getRequestScheme(req)
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if reqScheme == "" {
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return setting.AppURL
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}
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return setting.AppURL
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reqHost := getForwardedHost(req)
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if reqHost == "" {
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reqHost = req.Host
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}
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return reqScheme + "://" + reqHost + setting.AppSubURL + "/"
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}
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func MakeAbsoluteURL(ctx context.Context, s string) string {
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func TestMakeAbsoluteURL(t *testing.T) {
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defer test.MockVariableValue(&setting.Protocol, "http")()
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defer test.MockVariableValue(&setting.AppURL, "http://the-host/sub/")()
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defer test.MockVariableValue(&setting.AppURL, "http://cfg-host/sub/")()
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defer test.MockVariableValue(&setting.AppSubURL, "/sub")()
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ctx := context.Background()
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assert.Equal(t, "http://the-host/sub/", MakeAbsoluteURL(ctx, ""))
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assert.Equal(t, "http://the-host/sub/foo", MakeAbsoluteURL(ctx, "foo"))
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assert.Equal(t, "http://the-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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assert.Equal(t, "http://cfg-host/sub/", MakeAbsoluteURL(ctx, ""))
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assert.Equal(t, "http://cfg-host/sub/foo", MakeAbsoluteURL(ctx, "foo"))
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assert.Equal(t, "http://cfg-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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assert.Equal(t, "http://other/foo", MakeAbsoluteURL(ctx, "http://other/foo"))
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ctx = context.WithValue(ctx, RequestContextKey, &http.Request{
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Host: "user-host",
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})
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assert.Equal(t, "http://user-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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assert.Equal(t, "http://cfg-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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ctx = context.WithValue(ctx, RequestContextKey, &http.Request{
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Host: "user-host",
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@ -61,7 +61,7 @@ func TestMakeAbsoluteURL(t *testing.T) {
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"X-Forwarded-Host": {"forwarded-host"},
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},
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})
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assert.Equal(t, "https://forwarded-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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assert.Equal(t, "http://cfg-host/sub/foo", MakeAbsoluteURL(ctx, "/foo"))
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ctx = context.WithValue(ctx, RequestContextKey, &http.Request{
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Host: "user-host",
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@ -116,6 +116,8 @@ func apiErrorDefined(ctx *context.Context, err *namedError) {
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}
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func apiUnauthorizedError(ctx *context.Context) {
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// TODO: it doesn't seem quite right but it doesn't really cause problem at the moment.
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// container registry requires that the "/v2" must be in the root, so the sub-path in AppURL should be removed, ideally.
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ctx.Resp.Header().Add("WWW-Authenticate", `Bearer realm="`+httplib.GuessCurrentAppURL(ctx)+`v2/token",service="container_registry",scope="*"`)
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apiErrorDefined(ctx, errUnauthorized)
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}
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err := json.Unmarshal(resp.Body.Bytes(), &data)
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assert.NoError(t, err)
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assert.Equal(t, []string{
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ctx.Locale.TrString("admin.self_check.location_origin_mismatch", "http://frontend/sub/", "http://host/sub/"),
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ctx.Locale.TrString("admin.self_check.location_origin_mismatch", "http://frontend/sub/", "http://config/sub/"),
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}, data.Problems)
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}
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