27 lines
645 B
Go
27 lines
645 B
Go
package webseed
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import (
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"fmt"
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"net/http"
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"path"
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"strings"
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"github.com/anacrolix/torrent/metainfo"
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)
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// Creates a request per BEP 19.
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func NewRequest(url string, fileIndex int, info *metainfo.Info, offset, length int64) (*http.Request, error) {
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fileInfo := info.UpvertedFiles()[fileIndex]
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if strings.HasSuffix(url, "/") {
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url += path.Join(append([]string{info.Name}, fileInfo.Path...)...)
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}
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, err
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}
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if offset != 0 || length != fileInfo.Length {
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req.Header.Set("Range", fmt.Sprintf("bytes=%d-%d", offset, offset+length-1))
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}
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return req, nil
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}
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