49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package proxy
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import (
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"io"
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"net/http"
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"github.com/gin-gonic/gin"
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"github.com/sirupsen/logrus"
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)
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func (ps *ProxyServer) handleStreamingResponse(c *gin.Context, resp *http.Response) {
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c.Header("Content-Type", "text/event-stream")
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c.Header("Cache-Control", "no-cache")
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c.Header("Connection", "keep-alive")
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c.Header("X-Accel-Buffering", "no")
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flusher, ok := c.Writer.(http.Flusher)
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if !ok {
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logrus.Error("Streaming unsupported by the writer, falling back to normal response")
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ps.handleNormalResponse(c, resp)
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return
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}
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buf := make([]byte, 4*1024)
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for {
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n, err := resp.Body.Read(buf)
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if n > 0 {
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if _, writeErr := c.Writer.Write(buf[:n]); writeErr != nil {
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logUpstreamError("writing stream to client", writeErr)
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return
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}
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flusher.Flush()
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}
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if err == io.EOF {
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break
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}
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if err != nil {
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logUpstreamError("reading from upstream", err)
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return
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}
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}
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}
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func (ps *ProxyServer) handleNormalResponse(c *gin.Context, resp *http.Response) {
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if _, err := io.Copy(c.Writer, resp.Body); err != nil {
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logUpstreamError("copying response body", err)
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}
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}
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