📄 str_echo09.c
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#include "unp.h"#include "sum.h"voidstr_echo(int sockfd){ ssize_t n; struct args args; struct result result; for ( ; ; ) { if ( (n = Readn(sockfd, &args, sizeof(args))) == 0) return; /* connection closed by other end */ result.sum = args.arg1 + args.arg2; Writen(sockfd, &result, sizeof(result)); }}
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