(26.10.2017, 09:06)admin Wrote: You should use LuaSocket to get a snapshot instead of wget. wget will fail if output file already exist so this might cause a problem with 0 sized attachments. There's no need to save snapshot to /tmp, you can use ltn12.source.string.

(11.07.2018, 11:02)Daniel. Wrote: Try like that

'http://user:password@IPCAMERA/cgi-bin/snapshot.cgi?'

(11.07.2018, 14:12)DGrandes Wrote:

(11.07.2018, 11:02)Daniel. Wrote: Try like that

'http://user:password@IPCAMERA/cgi-bin/snapshot.cgi?'

It doesn´t work.
I´ve tried diferent options and every time ask me user and pass.

https://www.ispyconnect.com/man.aspx?n=Dahua

(11.07.2018, 14:20)buuuudzik Wrote:

(11.07.2018, 14:12)DGrandes Wrote:

(11.07.2018, 11:02)Daniel. Wrote: Try like that

'http://user:password@IPCAMERA/cgi-bin/snapshot.cgi?'

It doesn´t work.
I´ve tried diferent options and every time ask me user and pass.

https://www.ispyconnect.com/man.aspx?n=Dahua

You can try like here:
https://forum.logicmachine.net/showthread.php?tid=1073&pid=6338#pid6338

Maybe your camera support such params:
http://IP_address/cgi-bin/snapshot.cgi?chn=1&u=admin&p=password

(11.07.2018, 18:21)mlaudren Wrote: Can you try to add a fake parameter in the url like timestamp.
http://user:pass@CAMERAIP/cgi-bin/snapshot.cgi?1&ts=randomnumber

If it worked 1 time, and then fail, maybe there is a caching issue. By adding a parameter that change in the url, it is consider as a new request and will not look in the cache if any.

(16.08.2018, 12:50)I tried to use this code, hopefully I put it in right. Didn\t flag any errors in the log, so that's hopeful.I can't find the url of where the snapshot is sent to... any help??admin Wrote: Your camera uses digest auth mechanism which is not supported by socket.http library.
Use this code to get your snapshot:

Code:

local skthttp = require('socket.http') local skturl = require('socket.url') local ltn12 = require('ltn12') local md5sum = require('encdec').md5 local hash = function(...)   return md5sum(table.concat({...}, ':')) end local parse_header = function(header)   local result = {}   for key, value in (header .. ','):gmatch('(%w+)=(.-),') do     if value:sub(1, 1) == '"' then -- strip quotes       result[ key:lower() ] = value:sub(2, -2)     else       result[ key:lower() ] = value     end   end   return result end local make_digest_header = function(headers)   local digest = {}   for _, header in ipairs(headers) do     if not header.unquote then       header[ 2 ] = '"' .. header[ 2 ] .. '"'     end     digest[ #digest + 1 ] = header[ 1 ] .. '=' .. header[ 2 ]   end   return 'Digest ' .. table.concat(digest, ', ') end local _request = function(req)   if not req.url then     return nil, 'missing url'   end   local url = skturl.parse(req.url)   local user, password = url.user, url.password   if not user or not password then     return nil, 'missing credentials in url'   end   url.user, url.password, url.authority, url.userinfo = nil, nil, nil, nil   req.url = skturl.build(url)   local source   if req.source then     local chunks = {}     local capture = function(chunk)       if chunk then         chunks[ #chunks + 1 ] = chunk       end       return chunk     end     local chunk_id = 0     source = function()       chunk_id = chunk_id + 1       return chunks[ chunk_id ]     end     req.source = ltn12.source.chain(req.source, capture)   end   local body, code, hdrs = skthttp.request(req)   if code == 401 and hdrs['www-authenticate'] then     local ht = parse_header(hdrs['www-authenticate'])     if not ht.realm or not ht.nonce then       return nil, 'missing realm/nonce from response'     end     if ht.qop ~= 'auth' then       return nil, 'unsupported qop ' .. tostring(ht.qop)     end     if ht.algorithm and ht.algorithm:lower() ~= 'md5' then       return nil, 'unsupported algo ' .. tostring(ht.algorithm)     end     local nc = '00000001'     local cnonce = string.format('%08x', os.time())     local uri = skturl.build({ path = url.path, query = url.query })     local method = req.method or 'GET'     local response = hash(       hash(user, ht.realm, password),       ht.nonce,       nc,       cnonce,       'auth',       hash(method, uri)     )     req.headers = req.headers or {}     local auth = {       { 'username', user },       { 'realm', ht.realm },       { 'nonce', ht.nonce },       { 'uri', uri },       { 'cnonce', cnonce },       { 'nc', nc, unquote = true },       { 'qop', 'auth' },       { 'algorithm', 'MD5' },       { 'response', response },     }     if ht.opaque then       table.insert(auth, { 'opaque', ht.opaque })     end     req.headers.authorization = make_digest_header(auth)     if not req.headers.cookie and hdrs['set-cookie'] then       -- not really correct but enough for httpbin       local cookie = (hdrs['set-cookie'] .. ';'):match('(.-=.-)[;,]')       if cookie then         req.headers.cookie = '$Version: 0; ' .. cookie .. ';'       end     end     if req.source then       req.source = source     end     body, code, hdrs = skthttp.request(req)   end   return body, code, hdrs end local request = function(url)   local t = type(url)   if t == 'table' then     return _request(table.clone(url))   elseif t == 'string' then     local req = {}     local _, code, headers = _request({ url = url, sink = ltn12.sink.table(req) })     return table.concat(req), code, headers   end end url = 'http://admin:123456789@dnspruebacamara.myqnapcloud.com:5858/cgi-bin/snapshot.cgi?1&ts=123/snapshot.jpeg' image, err, hdrs = request(url)