Method responseStatusCode

HttpClient.cpp:291–399

}

int HttpClient::responseStatusCode()
{
    if (iState < eRequestSent)
    {
        return HTTP_ERROR_API;
    }
    // The first line will be of the form Status-Line:
    //   HTTP-Version SP Status-Code SP Reason-Phrase CRLF
    // Where HTTP-Version is of the form:
    //   HTTP-Version   = "HTTP" "/" 1*DIGIT "." 1*DIGIT

    char c = '\0';
    do
    {
        // Make sure the status code is reset, and likewise the state.  This
        // lets us easily cope with 1xx informational responses by just
        // ignoring them really, and reading the next line for a proper response
        iStatusCode = 0;
        iState = eRequestSent;

        unsigned long timeoutStart = millis();
        // Psuedo-regexp we're expecting before the status-code
        const char* statusPrefix = "HTTP/*.* ";
        const char* statusPtr = statusPrefix;
        // Whilst we haven't timed out & haven't reached the end of the headers
        while ((c != '\n') && 
               ( (millis() - timeoutStart) < iHttpResponseTimeout ))
        {
            if (available())
            {
                c = read();
                if (c != -1)
                {
                    switch(iState)
                    {
                    case eRequestSent:
                        // We haven't reached the status code yet
                        if ( (*statusPtr == '*') || (*statusPtr == c) )
                        {
                            // This character matches, just move along
                            statusPtr++;
                            if (*statusPtr == '\0')
                            {
                                // We've reached the end of the prefix
                                iState = eReadingStatusCode;
                            }
                        }
                        else
                        {
                            return HTTP_ERROR_INVALID_RESPONSE;
                        }
                        break;
                    case eReadingStatusCode:
                        if (isdigit(c))
                        {
                            // This assumes we won't get more than the 3 digits we
                            // want
                            iStatusCode = iStatusCode*10 + (c - '0');