100 Continue
HTTP 100 Continue 訊息狀態回應碼表示，目前為止的一切完好，用戶端應該繼續完成請求，或當請求已經完成的狀態下應忽略此訊息。
若要使伺服器確認請求標頭，用戶端必須在最初請求的標頭中，傳送Expect (en-US): 100-continue ，並且在傳送主體前，接收 100 Continue 狀態碼。
狀態
100 Continue
規範
| Specification | Title |
|---|---|
| RFC 7231, section 6.2.1: 100 Continue | Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content |
瀏覽器相容性
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