About request handler return MG_REQUEST_CALL_AGAIN

[nietsnie]

Hi all,

I start a server with a URI handler called cmgmRequestHandler. First time 
cmgmRequestHandler will return MG_REQUEST_CALL_AGAIN and send a request to 
another web server via mg_connect call. After download success from another 
server the Request Handler will call mg_send_data to give browser a 
response which content comes from another server.

I find that after download success and call mg_send_data the request 
handler return MG_REQUEST_PROCESSED, the browser can not catch the response.
Anyone can give me a right solution? Thanks very much!

static int cmgmRequestHandler(struct mg_connection *conn)
{
    static ConnectionParam param;

    if (isIdle(&param))
    {
        if (isConnect(conn))
        {
            printf("Connect Control Module!\n");
            mg_connect(server, "127.0.0.1", 8090,  0, ts1, &param);
            param.status = MG_PARAM_CONNECTING;
            return MG_REQUEST_CALL_AGAIN;
        }
        else
        {
            printf("Other Request!\n");
            return MG_REQUEST_NOT_PROCESSED;
        }
    }
    if (isConnecting(&param) || isConnected(&param))
    {
        printf("Connecting Control Module!\n");
        return MG_REQUEST_CALL_AGAIN;
    }
    else if (isDownloadSuccess(&param))
    {
        printf("Control Module Download Success!\n");
        mg_send_data(conn, param.content, strlen(param.content));
        param.status = MG_PARAM_ERROR;
        return MG_REQUEST_PROCESSED;
    }

    return MG_REQUEST_NOT_PROCESSED;
}

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