C++ InternetOpenUrlW - Memory usage -

update: replies. think understand why happens , possibly try reduce memory usage. also, yes use internetclosehandle doesnt change memory usage.

i'm writing simple c++ application. 1 of methods downloads very small file memory , returns string.

however, noticed 1 particular part of code makes program take 7x more memory (from 1mb 7mb) find weird , avoid it. below code snippet explaining when memory usage spike happens:

//internetopenw() doesnt trigger memory usage spike. hopen = internetopenw(l"myagent", null, null, null, null); if (!hopen) return null;  //when internetopenurlw() runs, memory spikes. hfile = internetopenurlw(hopen, szurl, null, null, internet_flag_reload | internet_flag_dont_cache, null); if (!hfile)  {     internetclosehandle(hopen);     return null; } 

the memory usage never goes down wonder if possible it.

---

it suggested check modules loaded when internetopenurlw() executed. below output of modules loaded step. however, im not gonna lie, have no idea mean or how should proceed.

'application.exe' (win32): loaded 'c:\windows\syswow64\mswsock.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\iphlpapi.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\winnsi.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\wship6.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\api-ms-win-downlevel-shlwapi-l2-1-0.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\dnsapi.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\clbcatq.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\oleaut32.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\wshtcpip.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\netprofm.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\nlaapi.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\dhcpcsvc6.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\rasadhlp.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\urlmon.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\dhcpcsvc.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\cryptsp.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\rsaenh.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\rpcrtremote.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\npmproxy.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\fwpuclnt.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.18807_none_41e554362bd82458\comctl32.dll'. cannot find or open pdb file. 'application.exe' (win32): loaded 'c:\windows\syswow64\ws2_32.dll'. cannot find or open pdb file. 'application.exe' (win32): unloaded 'c:\windows\syswow64\ws2_32.dll'