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proxy: Make headers when upstream is created; avoid potential nil ptr deref

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This commit is contained in:
Matthew Holt 2015-11-17 10:18:13 -07:00
parent 280ba9db85
commit 1d47e590e5
1 changed files with 6 additions and 11 deletions
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7
middleware/proxy/upstream.go
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@ -41,6 +41,7 @@ func NewStaticUpstreams(c parse.Dispenser) ([]Upstream, error) {
for c.Next() {
upstream := &staticUpstream{
from: "",
proxyHeaders: make(http.Header),
Hosts: nil,
Policy: &Random{},
FailTimeout: 10 * time.Second,
@ -159,14 +160,8 @@ func parseBlock(c *parse.Dispenser, u *staticUpstream) error {
if !c.Args(&header, &value) {
return c.ArgErr()
}
if u.proxyHeaders == nil {
u.proxyHeaders = make(http.Header)
}
u.proxyHeaders.Add(header, value)
case "websocket":
if u.proxyHeaders == nil {
u.proxyHeaders = make(http.Header)
}
u.proxyHeaders.Add("Connection", "{>Connection}")
u.proxyHeaders.Add("Upgrade", "{>Upgrade}")
case "without":