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Author: javascript-2020

blog/25-12-03/unix-sockets/ex/ipc-client-win.c

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+
+
+//  ipc-client-win.c
+
+        
+        #include <windows.h>
+        #include <stdio.h>
+        
+        
+        int main(void){
+          
+              const char *pipeName    = "\\\\.\\pipe\\mypipe";
+                                                                                printf("Connecting to server...\n");
+              HANDLE hPipe    = CreateFileA(
+                    pipeName,
+                    GENERIC_READ | GENERIC_WRITE,                               //  read + write
+                    0,                                                          //  no sharing
+                    NULL,                                                       //  default security
+                    OPEN_EXISTING,                                              //  must already exist
+                    0,                                                          //  default attributes
+                    NULL                                                        //  no template
+              );
+          
+              if(hPipe==INVALID_HANDLE_VALUE){
+                                                                                printf("CreateFile failed with error %lu\n", GetLastError());
+                    return 1;
+              }
+                                                                                printf("Connected to server.\n");          
+                                                                                //  Read message from server
+              char buffer[256];
+              DWORD bytesRead;
+              if(ReadFile(hPipe,buffer,sizeof(buffer)-1,&bytesRead,NULL)){
+                    buffer[bytesRead] = '\0';
+                                                                                printf("Received from server: %s\n", buffer);
+              } else {
+                                                                                printf("ReadFile failed with error %lu\n", GetLastError());
+                    CloseHandle(hPipe);
+                    return 1;
+              }
+          
+                                                                                //  Send reply to server
+              const char *reply   = "Hello back from client!";
+              DWORD bytesWritten;
+              if(!WriteFile(hPipe,reply,(DWORD)strlen(reply),&bytesWritten,NULL)){
+                                                                                printf("WriteFile failed with error %lu\n",GetLastError());
+                    CloseHandle(hPipe);
+                    return 1;
+              }
+                                                                                printf("Sent reply to server.\n");
+          
+              CloseHandle(hPipe);
+              
+              
+              return 0;
+              
+        }//main
+
+