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Add HTTP_HEAD to HTTPMethod and parse it (#6413)

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* Add HTTP_HEAD to HTTPMethod

* Parse the HTTP_HEAD variant of HTTPMethod from a method string

* Add HTTP_HEAD to the ESP8266WebServer constants

* Skip sending the content of the response if the HTTP method is HEAD method

* Convert the HTTP status code 418  to string
This status code is an easter egg from the IETF and is described in 
[RFC2324](https://tools.ietf.org/html/rfc2324#section-2.3.2)
This commit is contained in:
Zakary Kamal Ismail 2019-08-17 14:58:40 -04:00 committed by Earle F. Philhower, III
parent 8f45a0fb91
commit 0dbb04e881
4 changed files with 9 additions and 4 deletions
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1
libraries/ESP8266WebServer/keywords.txt
View File

@ -42,6 +42,7 @@ hostHeader KEYWORD2
#######################################
HTTP_GET LITERAL1
HTTP_HEAD LITERAL1
HTTP_POST LITERAL1
HTTP_ANY LITERAL1
CONTENT_LENGTH_UNKNOWN LITERAL1

2
libraries/ESP8266WebServer/src/ESP8266WebServer-impl.h
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@ -480,6 +480,7 @@ void ESP8266WebServerTemplate<ServerType>::send(int code, const String& content_
template <typename ServerType>
void ESP8266WebServerTemplate<ServerType>::sendContent(const String& content) {
if (_currentMethod == HTTP_HEAD) return;
const char * footer = "\r\n";
size_t len = content.length();
if(_chunked) {
@ -728,6 +729,7 @@ const String ESP8266WebServerTemplate<ServerType>::responseCodeToString(const in
case 415: return F("Unsupported Media Type");
case 416: return F("Requested range not satisfiable");
case 417: return F("Expectation Failed");
case 418: return F("I'm a teapot");
case 500: return F("Internal Server Error");
case 501: return F("Not Implemented");
case 502: return F("Bad Gateway");

6
libraries/ESP8266WebServer/src/ESP8266WebServer.h
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@ -30,7 +30,7 @@
#include <FS.h>
#include "detail/mimetable.h"
enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
enum HTTPUploadStatus { UPLOAD_FILE_START, UPLOAD_FILE_WRITE, UPLOAD_FILE_END,
UPLOAD_FILE_ABORTED };
enum HTTPClientStatus { HC_NONE, HC_WAIT_READ, HC_WAIT_CLOSE };
@ -194,10 +194,10 @@ protected:
std::unique_ptr<HTTPUpload> _currentUpload;
int _postArgsLen;
RequestArgument* _postArgs;
int _headerKeysCount;
RequestArgument* _currentHeaders;
size_t _contentLength;
String _responseHeaders;

4
libraries/ESP8266WebServer/src/Parsing-impl.h
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@ -99,7 +99,9 @@ bool ESP8266WebServerTemplate<ServerType>::_parseRequest(ClientType& client) {
_chunked = false;
HTTPMethod method = HTTP_GET;
if (methodStr == F("POST")) {
if (methodStr == F("HEAD")) {
method = HTTP_HEAD;
} else if (methodStr == F("POST")) {
method = HTTP_POST;
} else if (methodStr == F("DELETE")) {
method = HTTP_DELETE;