Francois Berder / HTTPSClient

wrapper of TLS library to connect to HTTPS servers

Dependents:   HTTPSClientExample

This library provides a simple interface to send GET requests over HTTPS. Notice that this library uses the axTLS library for the implementation of TLS.

Import programHTTPSClientExample

Connect to twitter.com and copies this webpage to a file.

Last commit 12 Sep 2013 by Francois Berder

HTTPSClient.cpp

Committer:
feb11
Date:
2013-09-12
Revision:
3:18af58231990
Parent:
2:6d7bc51cc77b

File content as of revision 3:18af58231990:

#include "HTTPSClient.h"
#include "HTTPHeader.h"
#include <stdio.h>
#include <string.h>

HTTPSClient::HTTPSClient():
    _con()
{
}

bool HTTPSClient::connect(const std::string& host)
{
    if(_con.is_connected())
        return false;

    return _con.connect(host.c_str());
}

std::string HTTPSClient::readLine()
{
    std::string line;
    char c;
    _con.receive(&c, 1);
    while(c != '\r') {
        line += c;
        _con.receive(&c, 1);
    }
    _con.receive(&c, 1); // skip \n
    return line;
}

HTTPHeader HTTPSClient::readHeader()
{
    HTTPHeader hdr;
    std::string line = readLine();
    sscanf(line.c_str(), "HTTP/1.%*d %d OK", &hdr._status);
    do {
        if(!line.compare(0,strlen("Content-Length"), "Content-Length"))
            sscanf(line.c_str(), "Content-Length: %d", &hdr._bodyLength);
        else if(!line.compare(0,strlen("content-length"), "content-length"))
            sscanf(line.c_str(), "content-length: %d", &hdr._bodyLength);
        line = readLine();
    } while(line.size());
    return hdr;
}

int HTTPSClient::get(const std::string& path, HTTPHeader *hdr)
{
    if(!_con.is_connected())
        return -1;

    const std::string &request = HTTPHeader::getRequest(path, _con.get_address(), 443);

    if(_con.send_all((char*)request.c_str(), request.size()+1) != request.size()+1)
        return -1;

    *hdr = readHeader();
    return hdr->_status == HTTP_OK ? 0 : -1;
}

int HTTPSClient::get(const std::string& path, HTTPHeader *hdr, char *data, int length)
{
    if(!_con.is_connected())
        return -1;

    if(hdr != NULL) {
        const std::string &request = HTTPHeader::getRequest(path, _con.get_address(), 443);
        if(_con.send_all((char*)request.c_str(), request.size()+1) != request.size()+1)
            return -1;
        *hdr = readHeader();
        if(hdr->_status != HTTP_OK)
            return -1;

        if(hdr->_bodyLength > 0)
            return _con.receive(data, hdr->_bodyLength > length ? length : hdr->_bodyLength);

        return 0;
    } else
        return _con.receive(data, length);
}

bool HTTPSClient::disconnect()
{
    if(!_con.is_connected())
        return true;

    return _con.close() == 0;
}