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(Unicode C) SSH Parallel Remote Commands on Single ServerSee more SSH ExamplesShows how to execute multiple commands in parallel on a single SSH server and retrieve the command output for each.
#include <C_CkSshW.h> void ChilkatSample(void) { HCkSshW ssh; int port; BOOL success; int channel1; int channel2; int channel3; int pollTimeoutMs; int numFinished; int channel; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. ssh = CkSshW_Create(); port = 22; success = CkSshW_Connect(ssh,L"the-ssh-server.com",port); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Authenticate using login/password: success = CkSshW_AuthenticatePw(ssh,L"theSshLogin",L"theSshPassword"); if (success != TRUE) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Start several commands on the server. channel1 = CkSshW_QuickCmdSend(ssh,L"df"); if (channel1 < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } channel2 = CkSshW_QuickCmdSend(ssh,L"date"); if (channel2 < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } channel3 = CkSshW_QuickCmdSend(ssh,L"echo hello world"); if (channel3 < 0) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } // Now collect the results of each command. pollTimeoutMs = 50; numFinished = 0; while (numFinished < 3) { // Check to see if anything has finished. // QuickCmdCheck returns -1 if there are no errors and nothing else finished // QuickCmdCheck returns -2 if there was an error (such as a lost connection) // QuickCmdCheck returns a channel number if a channel finished. channel = CkSshW_QuickCmdCheck(ssh,pollTimeoutMs); if (channel == -2) { wprintf(L"%s\n",CkSshW_lastErrorText(ssh)); CkSshW_Dispose(ssh); return; } if (channel >= 0) { wprintf(L"---- channel %d finished ----\n",channel); wprintf(L"%s\n",CkSshW_getReceivedText(ssh,channel,L"ansi")); numFinished = numFinished + 1; } } // -------------- // Sample output: // ---- channel 105 finished ---- // hello world // // ---- channel 104 finished ---- // Thu Dec 22 17:43:58 CST 2016 // // ---- channel 103 finished ---- // Filesystem 512-blocks Used Available Capacity iused ifree %iused Mounted on // /dev/disk2 2176716032 265739728 1910464304 13% 33281464 238808038 12% / // devfs 382 382 0 100% 662 0 100% /dev // map -hosts 0 0 0 100% 0 0 100% /net // map auto_home 0 0 0 100% 0 0 100% /home // /dev/disk3s2 374668 374668 0 100% 93665 0 100% /Volumes/Google Chrome CkSshW_Dispose(ssh); } |
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