📤 Request
The Request struct in Fiber's HTTP client represents an HTTP request. It encapsulates the data required to send a request, including:
- URL: The endpoint to which the request is sent.
- Method: The HTTP method (GET, POST, PUT, DELETE, etc.).
- Headers: Key-value pairs that provide additional information about the request or guide how the response should be processed.
- Body: The data sent with the request, commonly used with methods like POST and PUT.
- Query Parameters: Parameters appended to the URL to pass additional data or modify the request's behavior.
This structure is designed to be both flexible and efficient, allowing you to easily build and modify HTTP requests as needed.
type Request struct {
ctx context.Context
body any
header Header
params QueryParam
cookies Cookie
path PathParam
client *Client
formData FormData
RawRequest *fasthttp.Request
url string
method string
userAgent string
boundary string
referer string
files []*File
timeout time.Duration
maxRedirects int
bodyType bodyType
isPathNormalizingDisabled bool
}
Use the index to jump straight to any request method; filter by name:
REST Methods
Get
Get sends a GET request to the specified URL. It sets the URL and HTTP method, then dispatches the request to the server.
func (r *Request) Get(url string) (*Response, error)
Post
Post sends a POST request. It sets the URL and method to POST, then sends the request.
func (r *Request) Post(url string) (*Response, error)
Put
Put sends a PUT request. It sets the URL and method to PUT, then sends the request.
func (r *Request) Put(url string) (*Response, error)
Patch
Patch sends a PATCH request. It sets the URL and method to PATCH, then sends the request.
func (r *Request) Patch(url string) (*Response, error)
Delete
Delete sends a DELETE request. It sets the URL and method to DELETE, then sends the request.
func (r *Request) Delete(url string) (*Response, error)
Head
Head sends a HEAD request. It sets the URL and method to HEAD, then sends the request.
func (r *Request) Head(url string) (*Response, error)
Options
Options sends an OPTIONS request. It sets the URL and method to OPTIONS, then sends the request.
func (r *Request) Options(url string) (*Response, error)
Query
Query sends a QUERY request. It sets the URL and method to QUERY, then sends the request.
func (r *Request) Query(url string) (*Response, error)
Custom
Custom sends a request using a custom HTTP method. For example, you can use this to send a TRACE or CONNECT request.
func (r *Request) Custom(url, method string) (*Response, error)
AcquireRequest
AcquireRequest returns a new pooled Request. Call ReleaseRequest when you're finished to return it to the pool and limit allocations.
func AcquireRequest() *Request
ReleaseRequest
ReleaseRequest returns the Request to the pool. Do not use it after releasing; doing so may cause data races.
func ReleaseRequest(req *Request)
Method
Method returns the current HTTP method set for the request.
func (r *Request) Method() string
SetMethod
SetMethod sets the HTTP method for the Request object. Typically, you should use the specialized request methods (Get, Post, etc.) instead of calling SetMethod directly.
func (r *Request) SetMethod(method string) *Request
URL
URL returns the current URL set in the Request.
func (r *Request) URL() string
SetURL
SetURL sets the URL for the Request object.
func (r *Request) SetURL(url string) *Request
Client
Client retrieves the Client instance associated with the Request.
func (r *Request) Client() *Client
SetClient
SetClient assigns a Client to the Request. If the provided client is nil, it will panic.
func (r *Request) SetClient(c *Client) *Request
Context
Context returns the context.Context of the request, or context.Background() if none is set.
func (r *Request) Context() context.Context
SetContext
SetContext sets the context.Context for the request, allowing you to cancel or time out the request. See the Go blog and context docs for more details.
func (r *Request) SetContext(ctx context.Context) *Request
Header
Header returns all values for the specified header key. It searches all header fields stored in the request.
func (r *Request) Header(key string) []string
Headers
Headers returns an iterator over all headers in the request. Use maps.Collect() to transform them into a map if needed. The returned values are valid only until the request is released. Make copies as required.
func (r *Request) Headers() iter.Seq2[string, []string]
Example
req := client.AcquireRequest()
req.AddHeader("Golang", "Fiber")
req.AddHeader("Test", "123456")
req.AddHeader("Test", "654321")
for k, v := range req.Headers() {
fmt.Printf("Header Key: %s, Header Value: %v\n", k, v)
}
Header Key: Golang, Header Value: [Fiber]
Header Key: Test, Header Value: [123456 654321]
Example with maps.Collect()
req := client.AcquireRequest()
req.AddHeader("Golang", "Fiber")
req.AddHeader("Test", "123456")
req.AddHeader("Test", "654321")
headers := maps.Collect(req.Headers()) // Collect all headers into a map
for k, v := range headers {
fmt.Printf("Header Key: %s, Header Value: %v\n", k, v)
}
Header Key: Golang, Header Value: [Fiber]
Header Key: Test, Header Value: [123456 654321]
AddHeader
AddHeader adds a single header field and its value to the request.
func (r *Request) AddHeader(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.AddHeader("Golang", "Fiber")
req.AddHeader("Test", "123456")
req.AddHeader("Test", "654321")
resp, err := req.Get("https://httpbin.org/headers")
if err != nil {
panic(err)
}
fmt.Println(resp.String())
{
"headers": {
"Golang": "Fiber",
"Host": "httpbin.org",
"Referer": "",
"Test": "123456,654321",
"User-Agent": "fiber",
"X-Amzn-Trace-Id": "Root=1-664105d2-033cf7173457adb56d9e7193"
}
}
SetHeader
SetHeader sets a single header field and its value, overriding any previously set header with the same key.
func (r *Request) SetHeader(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetHeader("Test", "123456")
req.SetHeader("Test", "654321")
resp, err := req.Get("https://httpbin.org/headers")
if err != nil {
panic(err)
}
fmt.Println(resp.String())
{
"headers": {
"Golang": "Fiber",
"Host": "httpbin.org",
"Referer": "",
"Test": "654321",
"User-Agent": "fiber",
"X-Amzn-Trace-Id": "Root=1-664105e5-5d676ba348450cdb62847f04"
}
}
AddHeaders
AddHeaders adds multiple headers at once from a map of string slices.
func (r *Request) AddHeaders(h map[string][]string) *Request
SetHeaders
SetHeaders sets multiple headers at once from a map of strings, overriding any previously set headers.
func (r *Request) SetHeaders(h map[string]string) *Request
Param
Param returns all values associated with a given query parameter key.
func (r *Request) Param(key string) []string
Params
Params returns an iterator over all query parameters. Use maps.Collect() if you need them in a map. The returned values are valid only until the request is released.
func (r *Request) Params() iter.Seq2[string, []string]
AddParam
AddParam adds a single query parameter key-value pair.
func (r *Request) AddParam(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.AddParam("name", "john")
req.AddParam("hobbies", "football")
req.AddParam("hobbies", "basketball")
resp, err := req.Get("https://httpbin.org/response-headers")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"Content-Length": "145",
"Content-Type": "application/json",
"hobbies": [
"football",
"basketball"
],
"name": "joe"
}
SetParam
SetParam sets a single query parameter key-value pair, overriding any previously set values for that key.
func (r *Request) SetParam(key, val string) *Request
AddParams
AddParams adds multiple query parameters from a map of string slices.
func (r *Request) AddParams(m map[string][]string) *Request
SetParams
SetParams sets multiple query parameters from a map of strings, overriding previously set values.
func (r *Request) SetParams(m map[string]string) *Request
SetParamsWithStruct
SetParamsWithStruct sets multiple query parameters from a struct. Nested structs are not supported.
func (r *Request) SetParamsWithStruct(v any) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetParamsWithStruct(struct {
Name string `json:"name"`
Hobbies []string `json:"hobbies"`
}{
Name: "John Doe",
Hobbies: []string{
"Football",
"Basketball",
},
})
resp, err := req.Get("https://httpbin.org/response-headers")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"Content-Length": "147",
"Content-Type": "application/json",
"Hobbies": [
"Football",
"Basketball"
],
"Name": "John Doe"
}
DelParams
DelParams removes one or more query parameters by their keys.
func (r *Request) DelParams(key ...string) *Request
UserAgent
UserAgent returns the user agent currently set in the request.
func (r *Request) UserAgent() string
SetUserAgent
SetUserAgent sets the user agent header for the request, overriding the one set at the client level if any.
func (r *Request) SetUserAgent(ua string) *Request
Boundary
Boundary returns the multipart boundary used by the request.
func (r *Request) Boundary() string
SetBoundary
SetBoundary sets the multipart boundary for file uploads.
func (r *Request) SetBoundary(b string) *Request
Referer
Referer returns the Referer header value currently set in the request.
func (r *Request) Referer() string
SetReferer
SetReferer sets the Referer header for the request, overriding the one set at the client level if any.
func (r *Request) SetReferer(referer string) *Request
Cookie
Cookie returns the value of the specified cookie. If the cookie does not exist, it returns an empty string.
func (r *Request) Cookie(key string) string
Cookies
Cookies returns an iterator over all cookies set in the request. Use maps.Collect() to gather them into a map.
func (r *Request) Cookies() iter.Seq2[string, string]
SetCookie
SetCookie sets a single cookie key-value pair, overriding any previously set cookie with the same key.
func (r *Request) SetCookie(key, val string) *Request
SetCookies
SetCookies sets multiple cookies from a map, overriding previously set values.
func (r *Request) SetCookies(m map[string]string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetCookies(map[string]string{
"cookie1": "value1",
"cookie2": "value2",
})
resp, err := req.Get("https://httpbin.org/cookies")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"cookies": {
"test": "123"
}
}
SetCookiesWithStruct
SetCookiesWithStruct sets multiple cookies from a struct.
func (r *Request) SetCookiesWithStruct(v any) *Request
DelCookies
DelCookies removes one or more cookies by their keys.
func (r *Request) DelCookies(key ...string) *Request
PathParam
PathParam returns the value of a named path parameter. If not found, returns an empty string.
func (r *Request) PathParam(key string) string
PathParams
PathParams returns an iterator over all path parameters in the request. Use maps.Collect() to convert them into a map.
func (r *Request) PathParams() iter.Seq2[string, string]
SetPathParam
SetPathParam sets a single path parameter key-value pair, overriding previously set values.
func (r *Request) SetPathParam(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetPathParam("base64", "R29maWJlcg==")
resp, err := req.Get("https://httpbin.org/base64/:base64")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
Gofiber
SetPathParams
SetPathParams sets multiple path parameters at once, overriding previously set values.
func (r *Request) SetPathParams(m map[string]string) *Request
SetPathParamsWithStruct
SetPathParamsWithStruct sets multiple path parameters from a struct.
func (r *Request) SetPathParamsWithStruct(v any) *Request
DelPathParams
DelPathParams deletes one or more path parameters by their keys.
func (r *Request) DelPathParams(key ...string) *Request
ResetPathParams
ResetPathParams deletes all path parameters.
func (r *Request) ResetPathParams() *Request
SetJSON
SetJSON sets the request body to a JSON-encoded payload.
func (r *Request) SetJSON(v any) *Request
SetXML
SetXML sets the request body to an XML-encoded payload.
func (r *Request) SetXML(v any) *Request
SetCBOR
SetCBOR sets the request body to a CBOR-encoded payload. It automatically sets the Content-Type to application/cbor.
func (r *Request) SetCBOR(v any) *Request
SetRawBody
SetRawBody sets the request body to raw bytes.
func (r *Request) SetRawBody(v []byte) *Request
FormData
FormData returns all values associated with the given form data field.
func (r *Request) FormData(key string) []string
AllFormData
AllFormData returns an iterator over all form data fields. Use maps.Collect() if needed.
func (r *Request) AllFormData() iter.Seq2[string, []string]
AddFormData
AddFormData adds a single form data key-value pair.
func (r *Request) AddFormData(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.AddFormData("points", "80")
req.AddFormData("points", "90")
req.AddFormData("points", "100")
resp, err := req.Post("https://httpbin.org/post")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"args": {},
"data": "",
"files": {},
"form": {
"points": [
"80",
"90",
"100"
]
},
// ...
}
SetFormData
SetFormData sets a single form data field, overriding any previously set values.
func (r *Request) SetFormData(key, val string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetFormData("name", "john")
resp, err := req.Post("https://httpbin.org/post")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"args": {},
"data": "",
"files": {},
"form": {
"name": "john"
},
// ...
}
AddFormDataWithMap
AddFormDataWithMap adds multiple form data fields and values from a map of string slices.
func (r *Request) AddFormDataWithMap(m map[string][]string) *Request
SetFormDataWithMap
SetFormDataWithMap sets multiple form data fields from a map of strings.
func (r *Request) SetFormDataWithMap(m map[string]string) *Request
SetFormDataWithStruct
SetFormDataWithStruct sets multiple form data fields from a struct.
func (r *Request) SetFormDataWithStruct(v any) *Request
DelFormData
DelFormData deletes one or more form data fields by their keys.
func (r *Request) DelFormData(key ...string) *Request
File
File returns a file from the request by its name. If no name was provided, it attempts to match by path.
func (r *Request) File(name string) *File
Files
Files returns all files in the request as a slice. The returned slice is valid only until the request is released.
func (r *Request) Files() []*File
FileByPath
FileByPath returns a file from the request by its file path.
func (r *Request) FileByPath(path string) *File
AddFile
AddFile adds a single file to the request from a file path.
func (r *Request) AddFile(path string) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.AddFile("test.txt")
resp, err := req.Post("https://httpbin.org/post")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"args": {},
"data": "",
"files": {
"file1": "This is an empty file!\n"
},
"form": {},
// ...
}
AddFileWithReader
AddFileWithReader adds a single file to the request from an io.ReadCloser.
func (r *Request) AddFileWithReader(name string, reader io.ReadCloser) *Request
Example
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
buf := bytes.NewBuffer([]byte("Hello, World!"))
req.AddFileWithReader("test.txt", io.NopCloser(buf))
resp, err := req.Post("https://httpbin.org/post")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"args": {},
"data": "",
"files": {
"file1": "Hello, World!"
},
"form": {},
// ...
}
AddFiles
AddFiles adds multiple files to the request at once.
func (r *Request) AddFiles(files ...*File) *Request
Timeout
Timeout returns the timeout duration set in the request.
func (r *Request) Timeout() time.Duration
SetTimeout
SetTimeout sets a timeout for the request, overriding any timeout set at the client level.
func (r *Request) SetTimeout(t time.Duration) *Request
Example 1
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetTimeout(5 * time.Second)
resp, err := req.Get("https://httpbin.org/delay/4")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
{
"args": {},
"data": "",
"files": {},
"form": {},
// ...
}
Example 2
req := client.AcquireRequest()
defer client.ReleaseRequest(req)
req.SetTimeout(5 * time.Second)
resp, err := req.Get("https://httpbin.org/delay/6")
if err != nil {
panic(err)
}
fmt.Println(string(resp.Body()))
panic: timeout or cancel
goroutine 1 [running]:
main.main()
main.go:18 +0xeb
exit status 2
MaxRedirects
MaxRedirects returns the maximum number of redirects allowed for the request.
func (r *Request) MaxRedirects() int
SetMaxRedirects
SetMaxRedirects sets the maximum number of redirects for the request, overriding the client's setting.
func (r *Request) SetMaxRedirects(count int) *Request
Send
Send executes the HTTP request and returns a Response.
func (r *Request) Send() (*Response, error)
Reset
Reset clears the Request object, making it ready for reuse. This is used by ReleaseRequest.
func (r *Request) Reset()
Header
Header is a wrapper around fasthttp.RequestHeader, storing headers for both the client and request.
type Header struct {
*fasthttp.RequestHeader
}
PeekMultiple
PeekMultiple returns multiple values associated with the same header key.
func (h *Header) PeekMultiple(key string) []string
AddHeaders
AddHeaders adds multiple headers from a map of string slices.
func (h *Header) AddHeaders(r map[string][]string)
SetHeaders
SetHeaders sets multiple headers from a map of strings, overriding previously set headers.
func (h *Header) SetHeaders(r map[string]string)
QueryParam
QueryParam is a wrapper around fasthttp.Args, storing query parameters.
type QueryParam struct {
*fasthttp.Args
}
Keys
Keys returns all keys in the query parameters.
func (p *QueryParam) Keys() []string
AddParams
AddParams adds multiple query parameters from a map of string slices.
func (p *QueryParam) AddParams(r map[string][]string)
SetParams
SetParams sets multiple query parameters from a map of strings, overriding previously set values.
func (p *QueryParam) SetParams(r map[string]string)
SetParamsWithStruct
SetParamsWithStruct sets multiple query parameters from a struct. Nested structs are not supported.
func (p *QueryParam) SetParamsWithStruct(v any)
Cookie
Cookie is a map that stores cookies.
type Cookie map[string]string
Add
Add adds a cookie key-value pair.
func (c Cookie) Add(key, val string)
Del
Del removes a cookie by its key.
func (c Cookie) Del(key string)
SetCookie
SetCookie sets a single cookie key-value pair, overriding previously set values.
func (c Cookie) SetCookie(key, val string)
SetCookies
SetCookies sets multiple cookies from a map of strings.
func (c Cookie) SetCookies(m map[string]string)
SetCookiesWithStruct
SetCookiesWithStruct sets multiple cookies from a struct.
func (c Cookie) SetCookiesWithStruct(v any)
DelCookies
DelCookies deletes one or more cookies by their keys.
func (c Cookie) DelCookies(key ...string)
All
All returns an iterator over all cookies. The key and value returned should not be retained after the loop ends.
func (c Cookie) All() iter.Seq2[string, string]
Reset
Reset clears all cookies.
func (c Cookie) Reset()
PathParam
PathParam is a map that stores path parameters.
type PathParam map[string]string
Add
Add adds a path parameter key-value pair.
func (p PathParam) Add(key, val string)
Del
Del removes a path parameter by its key.
func (p PathParam) Del(key string)
SetParam
SetParam sets a single path parameter key-value pair, overriding previously set values.
func (p PathParam) SetParam(key, val string)
SetParams
SetParams sets multiple path parameters from a map of strings.
func (p PathParam) SetParams(m map[string]string)
SetParamsWithStruct
SetParamsWithStruct sets multiple path parameters from a struct.
func (p PathParam) SetParamsWithStruct(v any)
DelParams
DelParams deletes one or more path parameters by their keys.
func (p PathParam) DelParams(key ...string)
All
All returns an iterator over all path parameters. The key and value returned should not be retained after the loop ends.
func (p PathParam) All() iter.Seq2[string, string]
Reset
Reset clears all path parameters.
func (p PathParam) Reset()
FormData
FormData is a wrapper around fasthttp.Args, used to handle URL-encoded and form-data (multipart) request bodies.
type FormData struct {
*fasthttp.Args
}
Keys
Keys returns all form data keys.
func (f *FormData) Keys() []string
Add
Add adds a single form field key-value pair.
func (f *FormData) Add(key, val string)
Set
Set sets a single form field key-value pair, overriding any previously set values.
func (f *FormData) Set(key, val string)
AddWithMap
AddWithMap adds multiple form fields from a map of string slices.
func (f *FormData) AddWithMap(m map[string][]string)
SetWithMap
SetWithMap sets multiple form fields from a map of strings.
func (f *FormData) SetWithMap(m map[string]string)
SetWithStruct
SetWithStruct sets multiple form fields from a struct.
func (f *FormData) SetWithStruct(v any)
DelData
DelData deletes one or more form fields by their keys.
func (f *FormData) DelData(key ...string)
Reset
Reset clears all form data fields.
func (f *FormData) Reset()
File
File represents a file to be uploaded. It can be specified by name, path, or an io.ReadCloser.
type File struct {
name string
fieldName string
path string
reader io.ReadCloser
}
AcquireFile
AcquireFile returns a File from the pool and applies any provided SetFileFunc functions to it. Release it with ReleaseFile when done.
func AcquireFile(setter ...SetFileFunc) *File
ReleaseFile
ReleaseFile returns the File to the pool. Do not use the file afterward.
func ReleaseFile(f *File)
SetName
SetName sets the file's name.
func (f *File) SetName(n string)
SetFieldName
SetFieldName sets the field name of the file in the multipart form.
func (f *File) SetFieldName(n string)
SetPath
SetPath sets the file's path.
func (f *File) SetPath(p string)
SetReader
SetReader sets the file's io.ReadCloser. The reader is closed automatically when the request body is parsed.
func (f *File) SetReader(r io.ReadCloser)
Reset
Reset clears the file's fields.
func (f *File) Reset()
