HTTP

網頁傳輸狀態碼與操作介紹

HyperText Transfer Protocol status code

1: Message

• 100 Continue: Server got reqest
• 101 Switching Protocols: Server response
• 102 Processing: Server processing
• 103 Early Hints: Last response hint

2: Success

• 200 OK: Got request
• 201 Created: Request implemented
• 202 Accepted: Server approved request
• 203 Non-Authoritative Information: Revise request
• 204 No Content: Nothing needs to response
• 205 Reset Content: Response is nothing
• 206 Partial Content: Partial request is finished
• 207 Multi-Status: XML response
• 208 Already Reported: DAV member exists
• 226 IM Used: Reqest accomplished

3: Redirect

• 300 Multiple Choices: Several ways to response
• 301 Moved Permanently: Response moved to a new location permanently
• 302 Found: Moved Temporarily
• 303 See Other: See another URL for response
• 304 Not Modified: No need new resources
• 305 Use Proxy: Must get resource by proxy
• 306 Switch Proxy: Furthermore proxy
• 307 Temporary Redirect: Get response by another URL
• 308 Permanent Redirect: Get response by another URL permanently

4: Error

• 400 Bad Request: Server can’t response
• 401 Unauthorized: No certificate
• 402 Payment Required: Keep status code for future request
• 403 Forbidden: Refuse to execute request
• 404 Not Found: Didn’t found resources
• 405 Method Not Allowed: Inappropriate method
• 406 Not Acceptable: Incompleted request
• 407 Proxy Authentication Required
• 408 Request Timeout
• 409 Conflict: Request exists
• 410 Gone: Can’t use resource anymore
• 411 Length Required: Not found Content-Length
• 412 Precondition Failed: Need fulfill all requests in header
• 413 Request Entity Too Large
• 414 Request-URI Too Long
• 415 Unsupported Media Type
• 416 Requested Range Not Satisfiable
• 417 Expectation Failed
• 418 I’m a teapot: Easter egg
• 421 Misdirected Request
• 422 Unprocessable Entity
• 423 Locked
• 424 Failed Dependency
• 425 Too Early: Prevent Replay attack
• 426 Upgrade Required
• 428 Precondition Required
• 429 Too Many Requests
• 431 Request Header Fields Too Large
• 440 Login Time-out
• 451 Unavailable For Legal Reasons

5: Server Error

• 500 Internal Server Error
• 501 Not Implemented: Requedt not suported
• 502 Bad Gateway
• 503 Service Unavailable: Server overloading
• 504 Gateway Timeout
• 505 HTTP Version Not Supported
• 506 Variant Also Negotiates: Internal configuration error
• 507 Insufficient Storage
• 508 Loop Detected: Server dead lock
• 510 Not Extended: Request not satisfiable
• 511 Network Authentication Required

ref1

CRUD, HTTP, SQL

• Create, POST/PUT, INSERT
• Read, GET, SELECT
• Update, PUT/PATCH, UPDATE
• DELETE, DELETE, DELETE

HTTP Request Methods

• HEAD // Message body
• CONNECT // Get two-way connection with proxy server
• OPTIONS // Return a list of supported HTTP methods
• TRACE // Debugging

常用

• Get: 參數查詢
• Post: 表單提交

ref1,
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