Merge pull request #23 from aykhans/refactor/requests

Refactor requests
This commit is contained in:
Aykhan Shahsuvarov 2024-09-10 18:16:54 +04:00 committed by GitHub
commit f52361b5f7
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
7 changed files with 786 additions and 727 deletions

View File

@ -76,6 +76,13 @@ func (config *RequestConfig) GetValidDodosCountForProxies() int {
return min(config.DodosCount, len(config.Proxies), MaxDodosCountForProxies)
}
func (config *RequestConfig) GetMaxConns(minConns uint) uint {
maxConns := max(
minConns, uint(config.GetValidDodosCountForRequests()),
)
return ((maxConns * 50 / 100) + maxConns)
}
type Config struct {
Method string `json:"method" validate:"http_method"` // custom validations: http_method
URL string `json:"url" validate:"http_url,required"`

375
requests/client.go Normal file
View File

@ -0,0 +1,375 @@
package requests
import (
"context"
"fmt"
"math/rand"
"net/url"
"sync"
"time"
"github.com/aykhans/dodo/config"
customerrors "github.com/aykhans/dodo/custom_errors"
"github.com/aykhans/dodo/readers"
"github.com/aykhans/dodo/utils"
"github.com/valyala/fasthttp"
"github.com/valyala/fasthttp/fasthttpproxy"
)
// getClientDoFunc returns a ClientDoFunc function that can be used to make HTTP requests.
//
// The function first checks if there are any proxies available. If there are, it retrieves the active proxy clients
// using the getActiveProxyClients function. If the context is canceled during this process, it returns nil.
// It then checks the number of active proxy clients and prompts the user to continue if there are none.
// If the user chooses to continue, it creates a fasthttp.HostClient with the appropriate settings and returns
// a ClientDoFunc function using the getSharedClientDoFunc function.
// If there is only one active proxy client, it uses that client to create the ClientDoFunc function.
// If there are multiple active proxy clients, it uses the getSharedRandomClientDoFunc function to create the ClientDoFunc function.
//
// If there are no proxies available, it creates a fasthttp.HostClient with the appropriate settings and returns
// a ClientDoFunc function using the getSharedClientDoFunc function.
func getClientDoFunc(
ctx context.Context,
timeout time.Duration,
proxies []config.Proxy,
dodosCount int,
maxConns uint,
yes bool,
URL *url.URL,
) ClientDoFunc {
isTLS := URL.Scheme == "https"
if len(proxies) > 0 {
activeProxyClients := getActiveProxyClients(
ctx, proxies, timeout, dodosCount, maxConns, URL,
)
if ctx.Err() != nil {
return nil
}
activeProxyClientsCount := len(activeProxyClients)
var yesOrNoMessage string
var yesOrNoDefault bool
if activeProxyClientsCount == 0 {
yesOrNoDefault = false
yesOrNoMessage = utils.Colored(
utils.Colors.Yellow,
"No active proxies found. Do you want to continue?",
)
} else {
yesOrNoMessage = utils.Colored(
utils.Colors.Yellow,
fmt.Sprintf(
"Found %d active proxies. Do you want to continue?",
activeProxyClientsCount,
),
)
}
if !yes {
response := readers.CLIYesOrNoReader("\n"+yesOrNoMessage, yesOrNoDefault)
if !response {
utils.PrintAndExit("Exiting...")
}
}
fmt.Println()
if activeProxyClientsCount == 0 {
client := &fasthttp.HostClient{
MaxConns: int(maxConns),
IsTLS: isTLS,
Addr: URL.Host,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
}
return getSharedClientDoFunc(client, timeout)
} else if activeProxyClientsCount == 1 {
client := activeProxyClients[0]
return getSharedClientDoFunc(client, timeout)
}
return getSharedRandomClientDoFunc(
activeProxyClients,
activeProxyClientsCount,
timeout,
)
}
client := &fasthttp.HostClient{
MaxConns: int(maxConns),
IsTLS: isTLS,
Addr: URL.Host,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
}
return getSharedClientDoFunc(client, timeout)
}
// getActiveProxyClients divides the proxies into slices based on the number of dodos and
// launches goroutines to find active proxy clients for each slice.
// It uses a progress tracker to monitor the progress of the search.
// Once all goroutines have completed, the function waits for them to finish and
// returns a flattened slice of active proxy clients.
func getActiveProxyClients(
ctx context.Context,
proxies []config.Proxy,
timeout time.Duration,
dodosCount int,
maxConns uint,
URL *url.URL,
) []*fasthttp.HostClient {
activeProxyClientsArray := make([][]*fasthttp.HostClient, dodosCount)
proxiesCount := len(proxies)
var (
wg sync.WaitGroup
streamWG sync.WaitGroup
)
wg.Add(dodosCount)
streamWG.Add(1)
var proxiesSlice []config.Proxy
increase := make(chan int64, proxiesCount)
streamCtx, streamCtxCancel := context.WithCancel(context.Background())
go streamProgress(streamCtx, &streamWG, int64(proxiesCount), "Searching for active proxies🌐", increase)
for i := 0; i < dodosCount; i++ {
if i+1 == dodosCount {
proxiesSlice = proxies[i*proxiesCount/dodosCount:]
} else {
proxiesSlice = proxies[i*proxiesCount/dodosCount : (i+1)*proxiesCount/dodosCount]
}
go findActiveProxyClients(
ctx,
proxiesSlice,
timeout,
&activeProxyClientsArray[i],
increase,
maxConns,
URL,
&wg,
)
}
wg.Wait()
streamCtxCancel()
streamWG.Wait()
return utils.Flatten(activeProxyClientsArray)
}
// findActiveProxyClients checks a list of proxies to determine which ones are active
// and appends the active ones to the provided activeProxyClients slice.
//
// Parameters:
// - ctx: The context to control cancellation and timeout.
// - proxies: A slice of Proxy configurations to be checked.
// - timeout: The duration to wait for each proxy check before timing out.
// - activeProxyClients: A pointer to a slice where active proxy clients will be appended.
// - increase: A channel to signal the increase of checked proxies count.
// - URL: The URL to be used for checking the proxies.
// - wg: A WaitGroup to signal when the function is done.
//
// The function sends a GET request to each proxy using the provided URL. If the proxy
// responds with a status code of 200, it is considered active and added to the activeProxyClients slice.
// The function respects the context's cancellation and timeout settings.
func findActiveProxyClients(
ctx context.Context,
proxies []config.Proxy,
timeout time.Duration,
activeProxyClients *[]*fasthttp.HostClient,
increase chan<- int64,
maxConns uint,
URL *url.URL,
wg *sync.WaitGroup,
) {
defer wg.Done()
request := fasthttp.AcquireRequest()
defer fasthttp.ReleaseRequest(request)
request.SetRequestURI(config.ProxyCheckURL)
request.Header.SetMethod("GET")
for _, proxy := range proxies {
if ctx.Err() != nil {
return
}
func() {
defer func() { increase <- 1 }()
response := fasthttp.AcquireResponse()
defer fasthttp.ReleaseResponse(response)
dialFunc, err := getDialFunc(&proxy, timeout)
if err != nil {
return
}
client := &fasthttp.Client{
Dial: dialFunc,
}
defer client.CloseIdleConnections()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
return
}
break
case <-time.After(timeout):
return
case <-ctx.Done():
return
}
isTLS := URL.Scheme == "https"
addr := URL.Host
if isTLS && URL.Port() == "" {
addr += ":443"
}
if response.StatusCode() == 200 {
*activeProxyClients = append(
*activeProxyClients,
&fasthttp.HostClient{
MaxConns: int(maxConns),
IsTLS: isTLS,
Addr: addr,
Dial: dialFunc,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
},
)
}
}()
}
}
// getDialFunc returns a fasthttp.DialFunc based on the provided proxy configuration.
// It takes a pointer to a config.Proxy struct as input and returns a fasthttp.DialFunc and an error.
// The function parses the proxy URL, determines the scheme (socks5, socks5h, http, or https),
// and creates a dialer accordingly. If the proxy URL is invalid or the scheme is not supported,
// it returns an error.
func getDialFunc(proxy *config.Proxy, timeout time.Duration) (fasthttp.DialFunc, error) {
parsedProxyURL, err := url.Parse(proxy.URL)
if err != nil {
return nil, err
}
var dialer fasthttp.DialFunc
if parsedProxyURL.Scheme == "socks5" || parsedProxyURL.Scheme == "socks5h" {
if proxy.Username != "" {
dialer = fasthttpproxy.FasthttpSocksDialer(
fmt.Sprintf(
"%s://%s:%s@%s",
parsedProxyURL.Scheme,
proxy.Username,
proxy.Password,
parsedProxyURL.Host,
),
)
} else {
dialer = fasthttpproxy.FasthttpSocksDialer(
fmt.Sprintf(
"%s://%s",
parsedProxyURL.Scheme,
parsedProxyURL.Host,
),
)
}
} else if parsedProxyURL.Scheme == "http" {
if proxy.Username != "" {
dialer = fasthttpproxy.FasthttpHTTPDialerTimeout(
fmt.Sprintf(
"%s:%s@%s",
proxy.Username, proxy.Password, parsedProxyURL.Host,
),
timeout,
)
} else {
dialer = fasthttpproxy.FasthttpHTTPDialerTimeout(
parsedProxyURL.Host,
timeout,
)
}
} else {
return nil, err
}
return dialer, nil
}
// getSharedRandomClientDoFunc is equivalent to getSharedClientDoFunc but uses a random client from the provided slice.
func getSharedRandomClientDoFunc(
clients []*fasthttp.HostClient,
clientsCount int,
timeout time.Duration,
) ClientDoFunc {
return func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error) {
client := clients[rand.Intn(clientsCount)]
defer client.CloseIdleConnections()
response := fasthttp.AcquireResponse()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
fasthttp.ReleaseResponse(response)
return nil, err
}
return response, nil
case <-time.After(timeout):
fasthttp.ReleaseResponse(response)
return nil, customerrors.ErrTimeout
case <-ctx.Done():
return nil, customerrors.ErrInterrupt
}
}
}
// getSharedClientDoFunc is a function that returns a ClientDoFunc, which is a function type used for making HTTP requests using a shared client.
// It takes a client of type *fasthttp.HostClient and a timeout of type time.Duration as input parameters.
// The returned ClientDoFunc function can be used to make an HTTP request with the given client and timeout.
// It takes a context.Context and a *fasthttp.Request as input parameters and returns a *fasthttp.Response and an error.
// The function internally creates a new response using fasthttp.AcquireResponse() and a channel to handle errors.
// It then spawns a goroutine to execute the client.DoTimeout() method with the given request, response, and timeout.
// The function uses a select statement to handle three cases:
// - If an error is received from the channel, it checks if the error is not nil. If it's not nil, it releases the response and returns nil and the error.
// Otherwise, it returns the response and nil.
// - If the timeout duration is reached, it releases the response and returns nil and a custom timeout error.
// - If the context is canceled, it returns nil and a custom interrupt error.
//
// The function ensures that idle connections are closed by calling client.CloseIdleConnections() using a defer statement.
func getSharedClientDoFunc(
client *fasthttp.HostClient,
timeout time.Duration,
) ClientDoFunc {
return func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error) {
defer client.CloseIdleConnections()
response := fasthttp.AcquireResponse()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
fasthttp.ReleaseResponse(response)
return nil, err
}
return response, nil
case <-time.After(timeout):
fasthttp.ReleaseResponse(response)
return nil, customerrors.ErrTimeout
case <-ctx.Done():
return nil, customerrors.ErrInterrupt
}
}
}

75
requests/helper.go Normal file
View File

@ -0,0 +1,75 @@
package requests
import (
"context"
"fmt"
"sync"
"time"
"github.com/jedib0t/go-pretty/v6/progress"
"github.com/valyala/fasthttp"
)
// streamProgress streams the progress of a task to the console using a progress bar.
// It listens for increments on the provided channel and updates the progress bar accordingly.
//
// The function will stop and mark the progress as errored if the context is cancelled.
// It will also stop and mark the progress as done when the total number of increments is reached.
func streamProgress(
ctx context.Context,
wg *sync.WaitGroup,
total int64,
message string,
increase <-chan int64,
) {
defer wg.Done()
pw := progress.NewWriter()
pw.SetTrackerPosition(progress.PositionRight)
pw.SetStyle(progress.StyleBlocks)
pw.SetTrackerLength(40)
pw.SetUpdateFrequency(time.Millisecond * 250)
go pw.Render()
dodosTracker := progress.Tracker{
Message: message,
Total: total,
}
pw.AppendTracker(&dodosTracker)
for {
select {
case <-ctx.Done():
fmt.Printf("\r")
dodosTracker.MarkAsErrored()
time.Sleep(time.Millisecond * 300)
pw.Stop()
return
case value := <-increase:
dodosTracker.Increment(value)
}
}
}
// checkConnection checks the internet connection by making requests to different websites.
// It returns true if the connection is successful, otherwise false.
func checkConnection(ctx context.Context) bool {
ch := make(chan bool)
go func() {
_, _, err := fasthttp.Get(nil, "https://www.google.com")
if err != nil {
_, _, err = fasthttp.Get(nil, "https://www.bing.com")
if err != nil {
_, _, err = fasthttp.Get(nil, "https://www.yahoo.com")
ch <- err == nil
}
ch <- true
}
ch <- true
}()
select {
case <-ctx.Done():
return false
case res := <-ch:
return res
}
}

72
requests/request.go Normal file
View File

@ -0,0 +1,72 @@
package requests
import (
"net/url"
"github.com/aykhans/dodo/config"
"github.com/valyala/fasthttp"
)
// newRequest creates a new fasthttp.Request object with the provided parameters.
// It sets the request URI, host header, headers, cookies, params, method, and body.
func newRequest(
URL *url.URL,
Headers map[string]string,
Cookies map[string]string,
Params map[string]string,
Method string,
Body string,
) *fasthttp.Request {
request := fasthttp.AcquireRequest()
request.SetRequestURI(URL.Path)
// Set the host of the request to the host header
// If the host header is not set, the request will fail
// If there is host header in the headers, it will be overwritten
request.Header.Set("Host", URL.Host)
setRequestHeaders(request, Headers)
setRequestCookies(request, Cookies)
setRequestParams(request, Params)
setRequestMethod(request, Method)
setRequestBody(request, Body)
if URL.Scheme == "https" {
request.URI().SetScheme("https")
}
return request
}
// setRequestHeaders sets the headers of the given request with the provided key-value pairs.
func setRequestHeaders(req *fasthttp.Request, headers map[string]string) {
req.Header.Set("User-Agent", config.DefaultUserAgent)
for key, value := range headers {
req.Header.Set(key, value)
}
}
// setRequestCookies sets the cookies in the given request.
func setRequestCookies(req *fasthttp.Request, cookies map[string]string) {
for key, value := range cookies {
req.Header.SetCookie(key, value)
}
}
// setRequestParams sets the query parameters of the given request based on the provided map of key-value pairs.
func setRequestParams(req *fasthttp.Request, params map[string]string) {
urlParams := url.Values{}
for key, value := range params {
urlParams.Add(key, value)
}
req.URI().SetQueryString(urlParams.Encode())
}
// setRequestMethod sets the HTTP request method for the given request.
func setRequestMethod(req *fasthttp.Request, method string) {
req.Header.SetMethod(method)
}
// setRequestBody sets the request body of the given fasthttp.Request object.
// The body parameter is a string that will be converted to a byte slice and set as the request body.
func setRequestBody(req *fasthttp.Request, body string) {
req.SetBody([]byte(body))
}

View File

@ -1,727 +0,0 @@
package requests
import (
"context"
"fmt"
"math/rand"
"net/url"
"os"
"sync"
"time"
"github.com/aykhans/dodo/config"
customerrors "github.com/aykhans/dodo/custom_errors"
"github.com/aykhans/dodo/readers"
"github.com/aykhans/dodo/utils"
"github.com/jedib0t/go-pretty/v6/progress"
"github.com/jedib0t/go-pretty/v6/table"
"github.com/valyala/fasthttp"
"github.com/valyala/fasthttp/fasthttpproxy"
)
type Response struct {
StatusCode int
Error error
Time time.Duration
}
type Responses []Response
type ClientDoFunc func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error)
// Print prints the responses in a tabular format, including information such as
// response count, minimum time, maximum time, and average time.
func (respones *Responses) Print() {
var (
totalMinDuration time.Duration = (*respones)[0].Time
totalMaxDuration time.Duration = (*respones)[0].Time
totalDuration time.Duration
totalCount int = len(*respones)
)
mergedResponses := make(map[string][]time.Duration)
for _, response := range *respones {
if response.Time < totalMinDuration {
totalMinDuration = response.Time
}
if response.Time > totalMaxDuration {
totalMaxDuration = response.Time
}
totalDuration += response.Time
if response.Error != nil {
mergedResponses[response.Error.Error()] = append(
mergedResponses[response.Error.Error()],
response.Time,
)
} else {
mergedResponses[fmt.Sprintf("%d", response.StatusCode)] = append(
mergedResponses[fmt.Sprintf("%d", response.StatusCode)],
response.Time,
)
}
}
t := table.NewWriter()
t.SetOutputMirror(os.Stdout)
t.SetStyle(table.StyleLight)
t.SetAllowedRowLength(125)
t.AppendHeader(table.Row{
"Response",
"Count",
"Min Time",
"Max Time",
"Average Time",
})
for key, durations := range mergedResponses {
t.AppendRow(table.Row{
key,
len(durations),
utils.MinDuration(durations...),
utils.MaxDuration(durations...),
utils.AvgDuration(durations...),
})
t.AppendSeparator()
}
t.AppendRow(table.Row{
"Total",
totalCount,
totalMinDuration,
totalMaxDuration,
totalDuration / time.Duration(totalCount),
})
t.Render()
}
// Run executes the HTTP requests based on the provided request configuration.
// It checks for internet connection and returns an error if there is no connection.
// If the context is canceled while checking proxies, it returns the ErrInterrupt.
// If the context is canceled while sending requests, it returns the response objects obtained so far.
func Run(ctx context.Context, requestConfig *config.RequestConfig) (Responses, error) {
checkConnectionCtx, checkConnectionCtxCancel := context.WithTimeout(ctx, 8*time.Second)
if !checkConnection(checkConnectionCtx) {
checkConnectionCtxCancel()
return nil, customerrors.ErrNoInternet
}
checkConnectionCtxCancel()
clientDoFunc := getClientDoFunc(
ctx,
requestConfig.Timeout,
requestConfig.Proxies,
requestConfig.GetValidDodosCountForProxies(),
requestConfig.Yes,
requestConfig.URL,
)
if clientDoFunc == nil {
return nil, customerrors.ErrInterrupt
}
request := newRequest(
requestConfig.URL,
requestConfig.Headers,
requestConfig.Cookies,
requestConfig.Params,
requestConfig.Method,
requestConfig.Body,
)
defer fasthttp.ReleaseRequest(request)
responses := releaseDodos(
ctx,
request,
clientDoFunc,
requestConfig.GetValidDodosCountForRequests(),
requestConfig.RequestCount,
)
if ctx.Err() != nil && len(responses) == 0 {
return nil, customerrors.ErrInterrupt
}
return responses, nil
}
// releaseDodos sends multiple HTTP requests concurrently using multiple "dodos" (goroutines).
// It takes a mainRequest as the base request, timeout duration for each request, clientDoFunc for customizing the client behavior,
// dodosCount as the number of goroutines to be used, and requestCount as the total number of requests to be sent.
// It returns the responses received from all the requests.
func releaseDodos(
ctx context.Context,
mainRequest *fasthttp.Request,
clientDoFunc ClientDoFunc,
dodosCount int,
requestCount int,
) Responses {
var (
wg sync.WaitGroup
streamWG sync.WaitGroup
requestCountPerDodo int
)
wg.Add(dodosCount)
streamWG.Add(1)
responses := make([][]Response, dodosCount)
countSlice := make([]int, dodosCount)
streamCtx, streamCtxCancel := context.WithCancel(context.Background())
go streamProgress(streamCtx, &streamWG, requestCount, "Dodos Working🔥", &countSlice)
for i := 0; i < dodosCount; i++ {
if i+1 == dodosCount {
requestCountPerDodo = requestCount -
(i * requestCount / dodosCount)
} else {
requestCountPerDodo = ((i + 1) * requestCount / dodosCount) -
(i * requestCount / dodosCount)
}
dodoSpecificRequest := &fasthttp.Request{}
mainRequest.CopyTo(dodoSpecificRequest)
go sendRequest(
ctx,
dodoSpecificRequest,
&responses[i],
&countSlice[i],
requestCountPerDodo,
clientDoFunc,
&wg,
)
}
wg.Wait()
streamCtxCancel()
streamWG.Wait()
return utils.Flatten(responses)
}
// sendRequest sends multiple HTTP requests concurrently using the provided clientDo function.
// It takes a context, a request, a slice to store the response data, a counter to keep track of the number of requests,
// the total number of requests to be sent, a clientDo function to execute the requests,
// and a wait group to synchronize the goroutines.
// It releases the request and decrements the wait group counter when done.
// For each request, it checks if the context has been canceled and returns if so.
// It measures the time it takes to complete each request and appends the response data to the responseData slice.
// If an error occurs during the request, it appends a response with a status code of 0 and the error to the responseData slice.
// Otherwise, it appends a response with the actual status code and nil error to the responseData slice.
func sendRequest(
ctx context.Context,
request *fasthttp.Request,
responseData *[]Response,
counter *int,
requestCount int,
clientDo ClientDoFunc,
wg *sync.WaitGroup,
) {
defer fasthttp.ReleaseRequest(request)
defer wg.Done()
for range requestCount {
if ctx.Err() != nil {
return
}
func() {
defer func() { *counter++ }()
startTime := time.Now()
response, err := clientDo(ctx, request)
completedTime := time.Since(startTime)
if err != nil {
*responseData = append(*responseData, Response{
StatusCode: 0,
Error: err,
Time: completedTime,
})
return
}
defer fasthttp.ReleaseResponse(response)
*responseData = append(*responseData, Response{
StatusCode: response.StatusCode(),
Error: nil,
Time: completedTime,
})
}()
}
}
// getClientDoFunc returns a ClientDoFunc function that can be used to make HTTP requests.
//
// The function first checks if there are any proxies available. If there are, it retrieves the active proxy clients
// using the getActiveProxyClients function. If the context is canceled during this process, it returns nil.
// It then checks the number of active proxy clients and prompts the user to continue if there are none.
// If the user chooses to continue, it creates a fasthttp.HostClient with the appropriate settings and returns
// a ClientDoFunc function using the getSharedClientDoFunc function.
// If there is only one active proxy client, it uses that client to create the ClientDoFunc function.
// If there are multiple active proxy clients, it uses the getSharedRandomClientDoFunc function to create the ClientDoFunc function.
//
// If there are no proxies available, it creates a fasthttp.HostClient with the appropriate settings and returns
// a ClientDoFunc function using the getSharedClientDoFunc function.
func getClientDoFunc(
ctx context.Context,
timeout time.Duration,
proxies []config.Proxy,
dodosCount int,
yes bool,
URL *url.URL,
) ClientDoFunc {
isTLS := URL.Scheme == "https"
if len(proxies) > 0 {
activeProxyClients := getActiveProxyClients(
ctx, proxies, timeout, dodosCount, URL,
)
if ctx.Err() != nil {
return nil
}
activeProxyClientsCount := len(activeProxyClients)
var yesOrNoMessage string
var yesOrNoDefault bool
if activeProxyClientsCount == 0 {
yesOrNoDefault = false
yesOrNoMessage = utils.Colored(
utils.Colors.Yellow,
"No active proxies found. Do you want to continue?",
)
} else {
yesOrNoMessage = utils.Colored(
utils.Colors.Yellow,
fmt.Sprintf(
"Found %d active proxies. Do you want to continue?",
activeProxyClientsCount,
),
)
}
if !yes {
response := readers.CLIYesOrNoReader("\n"+yesOrNoMessage, yesOrNoDefault)
if !response {
utils.PrintAndExit("Exiting...")
}
}
fmt.Println()
if activeProxyClientsCount == 0 {
client := &fasthttp.HostClient{
IsTLS: isTLS,
Addr: URL.Host,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
}
return getSharedClientDoFunc(client, timeout)
} else if activeProxyClientsCount == 1 {
client := &activeProxyClients[0]
return getSharedClientDoFunc(client, timeout)
}
return getSharedRandomClientDoFunc(
activeProxyClients,
activeProxyClientsCount,
timeout,
)
}
client := &fasthttp.HostClient{
IsTLS: isTLS,
Addr: URL.Host,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
}
return getSharedClientDoFunc(client, timeout)
}
// getActiveProxyClients divides the proxies into slices based on the number of dodos and
// launches goroutines to find active proxy clients for each slice.
// It uses a progress tracker to monitor the progress of the search.
// Once all goroutines have completed, the function waits for them to finish and
// returns a flattened slice of active proxy clients.
func getActiveProxyClients(
ctx context.Context,
proxies []config.Proxy,
timeout time.Duration,
dodosCount int,
URL *url.URL,
) []fasthttp.HostClient {
activeProxyClientsArray := make([][]fasthttp.HostClient, dodosCount)
proxiesCount := len(proxies)
var (
wg sync.WaitGroup
streamWG sync.WaitGroup
)
wg.Add(dodosCount)
streamWG.Add(1)
var proxiesSlice []config.Proxy
countSlice := make([]int, dodosCount)
streamCtx, streamCtxCancel := context.WithCancel(context.Background())
go streamProgress(streamCtx, &streamWG, proxiesCount, "Searching for active proxies🌐", &countSlice)
for i := 0; i < dodosCount; i++ {
if i+1 == dodosCount {
proxiesSlice = proxies[i*proxiesCount/dodosCount:]
} else {
proxiesSlice = proxies[i*proxiesCount/dodosCount : (i+1)*proxiesCount/dodosCount]
}
go findActiveProxyClients(
ctx,
proxiesSlice,
timeout,
&activeProxyClientsArray[i],
&countSlice[i],
URL,
&wg,
)
}
wg.Wait()
streamCtxCancel()
streamWG.Wait()
return utils.Flatten(activeProxyClientsArray)
}
// findActiveProxyClients is a function that finds active proxy clients by sending HTTP GET requests to a list of proxies.
// It takes a context.Context, a slice of config.Proxy, a time.Duration for the timeout, a pointer to a slice of fasthttp.HostClient to store the active proxy clients,
// a pointer to an int to keep track of the count, a pointer to a url.URL for the URL to send the requests to, and a pointer to a sync.WaitGroup to synchronize the goroutines.
// It sends GET requests to each proxy in the given list and checks if the response status code is 200.
// If the context is canceled, the function returns immediately.
// The active proxy clients that pass the check are added to the provided slice of fasthttp.HostClient.
// The function is designed to be run concurrently using goroutines and the sync.WaitGroup is used to wait for all goroutines to finish.
// The function is responsible for releasing acquired resources and closing idle connections.
func findActiveProxyClients(
ctx context.Context,
proxies []config.Proxy,
timeout time.Duration,
activeProxyClients *[]fasthttp.HostClient,
count *int,
URL *url.URL,
wg *sync.WaitGroup,
) {
defer wg.Done()
request := fasthttp.AcquireRequest()
defer fasthttp.ReleaseRequest(request)
request.SetRequestURI(config.ProxyCheckURL)
request.Header.SetMethod("GET")
for _, proxy := range proxies {
if ctx.Err() != nil {
return
}
func() {
defer func() { *count++ }()
response := fasthttp.AcquireResponse()
defer fasthttp.ReleaseResponse(response)
dialFunc, err := getDialFunc(&proxy, timeout)
if err != nil {
return
}
client := &fasthttp.Client{
Dial: dialFunc,
}
defer client.CloseIdleConnections()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
return
}
break
case <-time.After(timeout):
return
case <-ctx.Done():
return
}
isTLS := URL.Scheme == "https"
addr := URL.Host
if isTLS && URL.Port() == "" {
addr += ":443"
}
if response.StatusCode() == 200 {
*activeProxyClients = append(
*activeProxyClients,
fasthttp.HostClient{
IsTLS: isTLS,
Addr: addr,
Dial: dialFunc,
MaxIdleConnDuration: timeout,
MaxConnDuration: timeout,
WriteTimeout: timeout,
ReadTimeout: timeout,
},
)
}
}()
}
}
// getDialFunc returns a fasthttp.DialFunc based on the provided proxy configuration.
// It takes a pointer to a config.Proxy struct as input and returns a fasthttp.DialFunc and an error.
// The function parses the proxy URL, determines the scheme (socks5, socks5h, http, or https),
// and creates a dialer accordingly. If the proxy URL is invalid or the scheme is not supported,
// it returns an error.
func getDialFunc(proxy *config.Proxy, timeout time.Duration) (fasthttp.DialFunc, error) {
parsedProxyURL, err := url.Parse(proxy.URL)
if err != nil {
return nil, err
}
var dialer fasthttp.DialFunc
if parsedProxyURL.Scheme == "socks5" || parsedProxyURL.Scheme == "socks5h" {
if proxy.Username != "" {
dialer = fasthttpproxy.FasthttpSocksDialer(
fmt.Sprintf(
"%s://%s:%s@%s",
parsedProxyURL.Scheme,
proxy.Username,
proxy.Password,
parsedProxyURL.Host,
),
)
} else {
dialer = fasthttpproxy.FasthttpSocksDialer(
fmt.Sprintf(
"%s://%s",
parsedProxyURL.Scheme,
parsedProxyURL.Host,
),
)
}
} else if parsedProxyURL.Scheme == "http" {
if proxy.Username != "" {
dialer = fasthttpproxy.FasthttpHTTPDialerTimeout(
fmt.Sprintf(
"%s:%s@%s",
proxy.Username, proxy.Password, parsedProxyURL.Host,
),
timeout,
)
} else {
dialer = fasthttpproxy.FasthttpHTTPDialerTimeout(
parsedProxyURL.Host,
timeout,
)
}
} else {
return nil, err
}
return dialer, nil
}
// getSharedRandomClientDoFunc is equivalent to getSharedClientDoFunc but uses a random client from the provided slice.
func getSharedRandomClientDoFunc(
clients []fasthttp.HostClient,
clientsCount int,
timeout time.Duration,
) ClientDoFunc {
return func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error) {
client := &clients[rand.Intn(clientsCount)]
defer client.CloseIdleConnections()
response := fasthttp.AcquireResponse()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
fasthttp.ReleaseResponse(response)
return nil, err
}
return response, nil
case <-time.After(timeout):
fasthttp.ReleaseResponse(response)
return nil, customerrors.ErrTimeout
case <-ctx.Done():
return nil, customerrors.ErrInterrupt
}
}
}
// getSharedClientDoFunc is a function that returns a ClientDoFunc, which is a function type used for making HTTP requests using a shared client.
// It takes a client of type *fasthttp.HostClient and a timeout of type time.Duration as input parameters.
// The returned ClientDoFunc function can be used to make an HTTP request with the given client and timeout.
// It takes a context.Context and a *fasthttp.Request as input parameters and returns a *fasthttp.Response and an error.
// The function internally creates a new response using fasthttp.AcquireResponse() and a channel to handle errors.
// It then spawns a goroutine to execute the client.DoTimeout() method with the given request, response, and timeout.
// The function uses a select statement to handle three cases:
// - If an error is received from the channel, it checks if the error is not nil. If it's not nil, it releases the response and returns nil and the error.
// Otherwise, it returns the response and nil.
// - If the timeout duration is reached, it releases the response and returns nil and a custom timeout error.
// - If the context is canceled, it returns nil and a custom interrupt error.
//
// The function ensures that idle connections are closed by calling client.CloseIdleConnections() using a defer statement.
func getSharedClientDoFunc(
client *fasthttp.HostClient,
timeout time.Duration,
) ClientDoFunc {
return func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error) {
defer client.CloseIdleConnections()
response := fasthttp.AcquireResponse()
ch := make(chan error)
go func() {
err := client.DoTimeout(request, response, timeout)
ch <- err
}()
select {
case err := <-ch:
if err != nil {
fasthttp.ReleaseResponse(response)
return nil, err
}
return response, nil
case <-time.After(timeout):
fasthttp.ReleaseResponse(response)
return nil, customerrors.ErrTimeout
case <-ctx.Done():
return nil, customerrors.ErrInterrupt
}
}
}
// newRequest creates a new fasthttp.Request object with the provided parameters.
// It sets the request URI, host header, headers, cookies, params, method, and body.
func newRequest(
URL *url.URL,
Headers map[string]string,
Cookies map[string]string,
Params map[string]string,
Method string,
Body string,
) *fasthttp.Request {
request := fasthttp.AcquireRequest()
request.SetRequestURI(URL.Path)
// Set the host of the request to the host header
// If the host header is not set, the request will fail
// If there is host header in the headers, it will be overwritten
request.Header.Set("Host", URL.Host)
setRequestHeaders(request, Headers)
setRequestCookies(request, Cookies)
setRequestParams(request, Params)
setRequestMethod(request, Method)
setRequestBody(request, Body)
if URL.Scheme == "https" {
request.URI().SetScheme("https")
}
return request
}
// setRequestHeaders sets the headers of the given request with the provided key-value pairs.
func setRequestHeaders(req *fasthttp.Request, headers map[string]string) {
req.Header.Set("User-Agent", config.DefaultUserAgent)
for key, value := range headers {
req.Header.Set(key, value)
}
}
// setRequestCookies sets the cookies in the given request.
func setRequestCookies(req *fasthttp.Request, cookies map[string]string) {
for key, value := range cookies {
req.Header.SetCookie(key, value)
}
}
// setRequestParams sets the query parameters of the given request based on the provided map of key-value pairs.
func setRequestParams(req *fasthttp.Request, params map[string]string) {
urlParams := url.Values{}
for key, value := range params {
urlParams.Add(key, value)
}
req.URI().SetQueryString(urlParams.Encode())
}
// setRequestMethod sets the HTTP request method for the given request.
func setRequestMethod(req *fasthttp.Request, method string) {
req.Header.SetMethod(method)
}
// setRequestBody sets the request body of the given fasthttp.Request object.
// The body parameter is a string that will be converted to a byte slice and set as the request body.
func setRequestBody(req *fasthttp.Request, body string) {
req.SetBody([]byte(body))
}
// streamProgress displays the progress of a stream operation.
// It takes a wait group, the total number of items to process, a message to display,
// and a pointer to a slice of counts for each item processed.
// The function runs in a separate goroutine and updates the progress bar until all items are processed.
// Once all items are processed, it marks the progress bar as done and stops rendering.
func streamProgress(
ctx context.Context,
wg *sync.WaitGroup,
total int,
message string,
countSlice *[]int,
) {
defer wg.Done()
pw := progress.NewWriter()
pw.SetTrackerPosition(progress.PositionRight)
pw.SetStyle(progress.StyleBlocks)
pw.SetTrackerLength(40)
pw.SetUpdateFrequency(time.Millisecond * 250)
go pw.Render()
dodosTracker := progress.Tracker{
Message: message,
Total: int64(total),
}
pw.AppendTracker(&dodosTracker)
for {
totalCount := 0
for _, count := range *countSlice {
totalCount += count
}
dodosTracker.SetValue(int64(totalCount))
if ctx.Err() != nil {
fmt.Printf("\r")
dodosTracker.MarkAsErrored()
time.Sleep(time.Millisecond * 300)
pw.Stop()
return
}
if totalCount == total {
break
}
time.Sleep(time.Millisecond * 200)
}
fmt.Printf("\r")
dodosTracker.MarkAsDone()
time.Sleep(time.Millisecond * 300)
pw.Stop()
}
// checkConnection checks the internet connection by making requests to different websites.
// It returns true if the connection is successful, otherwise false.
func checkConnection(ctx context.Context) bool {
ch := make(chan bool)
go func() {
_, _, err := fasthttp.Get(nil, "https://www.google.com")
if err != nil {
_, _, err = fasthttp.Get(nil, "https://www.bing.com")
if err != nil {
_, _, err = fasthttp.Get(nil, "https://www.yahoo.com")
ch <- err == nil
}
ch <- true
}
ch <- true
}()
select {
case <-ctx.Done():
return false
case res := <-ch:
return res
}
}

86
requests/response.go Normal file
View File

@ -0,0 +1,86 @@
package requests
import (
"context"
"fmt"
"os"
"time"
"github.com/aykhans/dodo/utils"
"github.com/jedib0t/go-pretty/v6/table"
"github.com/valyala/fasthttp"
)
type Response struct {
StatusCode int
Error error
Time time.Duration
}
type Responses []Response
type ClientDoFunc func(ctx context.Context, request *fasthttp.Request) (*fasthttp.Response, error)
// Print prints the responses in a tabular format, including information such as
// response count, minimum time, maximum time, and average time.
func (respones Responses) Print() {
var (
totalMinDuration time.Duration = respones[0].Time
totalMaxDuration time.Duration = respones[0].Time
totalDuration time.Duration
totalCount int = len(respones)
)
mergedResponses := make(map[string][]time.Duration)
for _, response := range respones {
if response.Time < totalMinDuration {
totalMinDuration = response.Time
}
if response.Time > totalMaxDuration {
totalMaxDuration = response.Time
}
totalDuration += response.Time
if response.Error != nil {
mergedResponses[response.Error.Error()] = append(
mergedResponses[response.Error.Error()],
response.Time,
)
} else {
mergedResponses[fmt.Sprintf("%d", response.StatusCode)] = append(
mergedResponses[fmt.Sprintf("%d", response.StatusCode)],
response.Time,
)
}
}
t := table.NewWriter()
t.SetOutputMirror(os.Stdout)
t.SetStyle(table.StyleLight)
t.SetAllowedRowLength(125)
t.AppendHeader(table.Row{
"Response",
"Count",
"Min Time",
"Max Time",
"Average Time",
})
for key, durations := range mergedResponses {
t.AppendRow(table.Row{
key,
len(durations),
utils.MinDuration(durations...),
utils.MaxDuration(durations...),
utils.AvgDuration(durations...),
})
t.AppendSeparator()
}
t.AppendRow(table.Row{
"Total",
totalCount,
totalMinDuration,
totalMaxDuration,
totalDuration / time.Duration(totalCount),
})
t.Render()
}

171
requests/run.go Normal file
View File

@ -0,0 +1,171 @@
package requests
import (
"context"
"sync"
"time"
"github.com/aykhans/dodo/config"
customerrors "github.com/aykhans/dodo/custom_errors"
"github.com/aykhans/dodo/utils"
"github.com/valyala/fasthttp"
)
// Run executes the HTTP requests based on the provided request configuration.
// It checks for internet connection and returns an error if there is no connection.
// If the context is canceled while checking proxies, it returns the ErrInterrupt.
// If the context is canceled while sending requests, it returns the response objects obtained so far.
func Run(ctx context.Context, requestConfig *config.RequestConfig) (Responses, error) {
checkConnectionCtx, checkConnectionCtxCancel := context.WithTimeout(ctx, 8*time.Second)
if !checkConnection(checkConnectionCtx) {
checkConnectionCtxCancel()
return nil, customerrors.ErrNoInternet
}
checkConnectionCtxCancel()
clientDoFunc := getClientDoFunc(
ctx,
requestConfig.Timeout,
requestConfig.Proxies,
requestConfig.GetValidDodosCountForProxies(),
requestConfig.GetMaxConns(fasthttp.DefaultMaxConnsPerHost),
requestConfig.Yes,
requestConfig.URL,
)
if clientDoFunc == nil {
return nil, customerrors.ErrInterrupt
}
request := newRequest(
requestConfig.URL,
requestConfig.Headers,
requestConfig.Cookies,
requestConfig.Params,
requestConfig.Method,
requestConfig.Body,
)
defer fasthttp.ReleaseRequest(request)
responses := releaseDodos(
ctx,
request,
clientDoFunc,
requestConfig.GetValidDodosCountForRequests(),
requestConfig.RequestCount,
)
if ctx.Err() != nil && len(responses) == 0 {
return nil, customerrors.ErrInterrupt
}
return responses, nil
}
// releaseDodos sends multiple HTTP requests concurrently using multiple "dodos" (goroutines).
// It takes a mainRequest as the base request, timeout duration for each request, clientDoFunc for customizing the client behavior,
// dodosCount as the number of goroutines to be used, and requestCount as the total number of requests to be sent.
// It returns the responses received from all the requests.
func releaseDodos(
ctx context.Context,
mainRequest *fasthttp.Request,
clientDoFunc ClientDoFunc,
dodosCount int,
requestCount int,
) Responses {
var (
wg sync.WaitGroup
streamWG sync.WaitGroup
requestCountPerDodo int
)
wg.Add(dodosCount)
streamWG.Add(1)
responses := make([][]Response, dodosCount)
increase := make(chan int64, requestCount)
streamCtx, streamCtxCancel := context.WithCancel(context.Background())
go streamProgress(streamCtx, &streamWG, int64(requestCount), "Dodos Working🔥", increase)
for i := 0; i < dodosCount; i++ {
if i+1 == dodosCount {
requestCountPerDodo = requestCount -
(i * requestCount / dodosCount)
} else {
requestCountPerDodo = ((i + 1) * requestCount / dodosCount) -
(i * requestCount / dodosCount)
}
dodoSpecificRequest := &fasthttp.Request{}
mainRequest.CopyTo(dodoSpecificRequest)
go sendRequest(
ctx,
dodoSpecificRequest,
&responses[i],
increase,
requestCountPerDodo,
clientDoFunc,
&wg,
)
}
wg.Wait()
streamCtxCancel()
streamWG.Wait()
return utils.Flatten(responses)
}
// sendRequest sends an HTTP request using the provided clientDo function and handles the response.
//
// Parameters:
// - ctx: The context to control cancellation and timeout.
// - request: The HTTP request to be sent.
// - responseData: A slice to store the response data.
// - increase: A channel to signal the completion of a request.
// - requestCount: The number of requests to be sent.
// - clientDo: A function to execute the HTTP request.
// - wg: A wait group to signal the completion of the function.
//
// The function sends the specified number of requests, handles errors, and appends the response data
// to the responseData slice.
func sendRequest(
ctx context.Context,
request *fasthttp.Request,
responseData *[]Response,
increase chan<- int64,
requestCount int,
clientDo ClientDoFunc,
wg *sync.WaitGroup,
) {
defer fasthttp.ReleaseRequest(request)
defer wg.Done()
for range requestCount {
if ctx.Err() != nil {
return
}
func() {
startTime := time.Now()
response, err := clientDo(ctx, request)
completedTime := time.Since(startTime)
if err != nil {
if err == customerrors.ErrInterrupt {
return
}
*responseData = append(*responseData, Response{
StatusCode: 0,
Error: err,
Time: completedTime,
})
increase <- 1
return
}
defer fasthttp.ReleaseResponse(response)
*responseData = append(*responseData, Response{
StatusCode: response.StatusCode(),
Error: nil,
Time: completedTime,
})
increase <- 1
}()
}
}