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net/http: add response body to 413 and 400 errors
The existing serve() method returns a zero-length response body when it encounters an error, which results in a blank page and no visible error in browsers. This change sends a response body explaining the error for display in browsers. Fixes #12745 Change-Id: I9dc3b95ad88cb92c18ced51f6b52bd3b2c1b974c Reviewed-on: https://go-review.googlesource.com/15018 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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@ -1339,7 +1339,7 @@ func (c *conn) serve() {
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// responding to them and hanging up
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// responding to them and hanging up
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// while they're still writing their
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// while they're still writing their
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// request. Undefined behavior.
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// request. Undefined behavior.
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io.WriteString(c.rwc, "HTTP/1.1 413 Request Entity Too Large\r\n\r\n")
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io.WriteString(c.rwc, "HTTP/1.1 413 Request Entity Too Large\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\n413 Request Entity Too Large")
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c.closeWriteAndWait()
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c.closeWriteAndWait()
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break
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break
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} else if err == io.EOF {
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} else if err == io.EOF {
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@ -1347,7 +1347,7 @@ func (c *conn) serve() {
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} else if neterr, ok := err.(net.Error); ok && neterr.Timeout() {
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} else if neterr, ok := err.(net.Error); ok && neterr.Timeout() {
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break // Don't reply
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break // Don't reply
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}
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}
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io.WriteString(c.rwc, "HTTP/1.1 400 Bad Request\r\n\r\n")
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io.WriteString(c.rwc, "HTTP/1.1 400 Bad Request\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\n400 Bad Request")
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break
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break
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}
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}
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