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68 lines
1.3 KiB
Markdown
68 lines
1.3 KiB
Markdown
---
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title: Middleware
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menu:
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side:
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parent: guide
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weight: 4
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---
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Middleware is a function which is chained in the HTTP request-response cycle. Middleware
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has access to the request and response objects which it utilizes to perform a specific
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action, for example, logging every request.
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### Logger
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Logs each HTTP request with method, path, status, response time and bytes served.
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*Example*
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```go
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e.Use(Logger())
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// Output: `2015/06/07 18:16:16 GET / 200 13.238µs 14`
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```
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### BasicAuth
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BasicAuth middleware provides an HTTP basic authentication.
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- For valid credentials it calls the next handler in the chain.
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- For invalid Authorization header it sends "404 - Bad Request" response.
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- For invalid credentials, it sends "401 - Unauthorized" response.
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*Example*
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```go
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g := e.Group("/admin")
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g.Use(mw.BasicAuth(func(usr, pwd string) bool {
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if usr == "joe" && pwd == "secret" {
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return true
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}
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return false
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}))
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```
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### Gzip
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Gzip middleware compresses HTTP response using gzip compression scheme.
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*Example*
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```go
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e.Use(mw.Gzip())
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```
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### Recover
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Recover middleware recovers from panics anywhere in the chain and handles the
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control to the centralized
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[HTTPErrorHandler]({{< relref "guide/customization.md#http-error-handler">}}).
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*Example*
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```go
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e.Use(mw.Recover())
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```
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### [Recipes](https://github.com/labstack/echo/tree/master/recipes/middleware)
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