D the stack frame has the following structure and

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Unformatted text preview: ctions ********************************/ /* * open_clientfd - open connection to server at <hostname, port> * and return a socket descriptor ready for reading and writing. */ int open_clientfd(char *hostname, int port) { int clientfd; struct hostent *hp; struct sockaddr_in serveraddr; clientfd = Socket(AF_INET, SOCK_STREAM, 0); /* fill in the server’s IP address and port */ hp = Gethostbyname(hostname); bzero((char *) &serveraddr, sizeof(serveraddr)); serveraddr.sin_family = AF_INET; bcopy((char *)hp->h_addr, (char *)&serveraddr.sin_addr.s_addr, hp->h_length); serveraddr.sin_port = htons(port); /* establish a connection with the server */ Connect(clientfd, (SA *) &serveraddr, sizeof(serveraddr)); return clientfd; } /* * open_listenfd - open and return a listening socket on port */ int open_listenfd(int port) { int listenfd; int optval; struct sockaddr_in serveraddr; /* create a socket descriptor */ listenfd = Socket(AF_INET, SOCK_STREAM, 0); /* eliminates "Address already in use" error from bin...
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This note was uploaded on 09/02/2010 for the course ELECTRICAL 360 taught by Professor Schultz during the Spring '10 term at BYU.

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