2.1.21.8 okutil_http_download


Description

Download from given URL to a file, with https(SSL) support

Syntax

int okutil_http_download( LPCSTR lpcszURL, LPCSTR lpcszFileName, int nConnectTimeout = 0, int nResponseTimeout = 0, BOOL bIgnoreCertError = FALSE )

Parameters

lpcszURL
[input]The URL specify the target file to download
lpcszFileName
[input]The local file to receive data downloaded from lpcszURL
nConnectionTimeout
[input]The number of seconds to specify timeout limit when connect to server
nResponseTimeout
[input]The number of seconds to specify timeout limit waiting for response of a request
bIgnoreCertError
[input]Ignore Error

Return

Return OHTTP_E_OK for success, other negative values are error code.

Examples

//assume active book empty
void stock()
{
	string strSymbol = "MSFT";//you need apikey if searching any other stock
	string strFile = GetOriginPath(ORIGIN_PATH_USER) + strSymbol + "_stock.csv";
	string strURL = "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=";
	strURL += strSymbol;
	strURL += "&apikey=demo&datatype=csv";
	string result;
	int err = okutil_http_download(strURL, strFile);
	if( err != 0 ) {
		out_int("err = ", err);
		return;
	}
	Worksheet wks = Project.ActiveLayer();
	ASCIMP  ai;
	if(AscImpReadFileStruct(strFile, &ai)==0) {
		ai.iSubHeaderLines = 1;
		ai.nLongNames = 1;
		wks.ImportASCII(strFile, ai);
		Column col(wks, 0);
		col.SetFormat(OKCOLTYPE_DATE, "yyyy'-'MM'-'dd");
	}
}

Remark

See Also

Header to Included

origin.h

Reference