HTTP Parser provides the functionality to parse both HTTP requests and responses. Written in C and was created for working in embedded applications.
- All dependencies in one package
- Request/Response validation
- Decodes chunked encoding
- Easy to manipulate with headers and query parameters(see example)
The parser extracts the following information from HTTP messages:
- HTTP version
- Content-Length
- Request method
- Response status code
- Request URL
- Transfer-Encoding
- Message body
- Headers as key and value pairs
- URL query parameters as key and value pairs
How to add CPM to the project, check the link
CPMAddPackage(
NAME HTTPParser
GITHUB_REPOSITORY ximtech/HTTPParser
GIT_TAG origin/main)
target_link_libraries(${PROJECT_NAME} HTTPParser)add_executable(${PROJECT_NAME}.elf ${SOURCES} ${LINKER_SCRIPT})
# For Clion STM32 plugin generated Cmake use
target_link_libraries(${PROJECT_NAME}.elf HTTPParser)NOTE: Parser use split function. Character buffer will be spoiled
const char *testRequest =
"GET /cgi-bin/process.cgi?param1=val1¶m2=val2 HTTP/1.1\n"
"User-Agent: Mozilla/4.0 (compatible; MSIE5.01; Windows NT)\n"
"Host: www.example.com\n"
"Content-Type: text/xml; charset=utf-8\n"
"Content-Length: 12345\n"
"Accept-Language: en-us\n"
"Accept-Encoding: gzip, deflate\n"
"Connection: Keep-Alive\n\n";
char httpDataBuffer[1000];
strcpy(httpDataBuffer, testRequest);
HTTPParser *parser = getHttpParserInstance();
parseHttpBuffer(httpDataBuffer, parser, HTTP_REQUEST); // Parse request
if (parser->parserStatus == HTTP_PARSE_OK) { // Parser checks for errors
printf("Http Version: %s\n", parser->httpVersion);
printf("Content-Length: %ul\n", parser->contentLength);
printf("Method: %s\n", getHttpMethodName(parser->method));
printf("URI path: %s\n\n", parser->uriPath);
}
// Parse headers
parseHttpHeaders(parser, httpDataBuffer);
HashMap headers = parser->headers;
printf("Header count: %d\n", getHashMapSize(headers));
HashMapIterator headerIterator = getHashMapIterator(headers);
while (hashMapHasNext(&headerIterator)) {
printf("[%s]: [%s]\n", headerIterator.key, headerIterator.value);
}
printf("\n");
// Parse URL parameters
parseHttpQueryParameters(parser, httpDataBuffer);
HashMap params = parser->queryParameters;
printf("Params count: %d\n", getHashMapSize(params));
HashMapIterator paramIterator = getHashMapIterator(params);
while (hashMapHasNext(¶mIterator)) {
printf("[%s]: [%s]\n", paramIterator.key, paramIterator.value);
}
deleteHttpParser(parser);
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