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31 lines
571 B
Go
31 lines
571 B
Go
package internal
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import (
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"fmt"
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"net/http"
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"strings"
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)
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const (
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metadataHeaderPrefix = "Grpc-Metadata-"
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metadataPrefix = "gateway-"
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)
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// ProcessHeaders builds the headers for the gateway from HTTP headers.
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func ProcessHeaders(header http.Header) []string {
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var headers []string
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for k, v := range header {
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if !strings.HasPrefix(k, metadataHeaderPrefix) {
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continue
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}
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key := fmt.Sprintf("%s%s", metadataPrefix, strings.TrimPrefix(k, metadataHeaderPrefix))
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for _, vv := range v {
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headers = append(headers, key+":"+vv)
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}
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}
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return headers
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}
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