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* File: sockpong.c
* Description:
* This test runs in conjunction with the sockping test.
* The sockping test creates a socket pair and passes one
* socket to this test. Then the sockping test writes
* "ping" to this test and this test writes "pong" back.
* To run this pair of tests, just invoke sockping.
* Tested areas: process creation, socket pairs, file
* descriptor inheritance.
#include "prerror.h"
#include "prio.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(int argc, char **argv)
PRFileDesc *sock;
PRStatus status;
char buf[1024];
PRInt32 nBytes;
int idx;
sock = PR_GetInheritedFD("SOCKET");
if (sock == NULL) {
fprintf(stderr, "PR_GetInheritedFD failed\n");
status = PR_SetFDInheritable(sock, PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_SetFDInheritable failed\n");
for (idx = 0; idx < NUM_ITERATIONS; idx++) {
memset(buf, 0, sizeof(buf));
nBytes = PR_Read(sock, buf, sizeof(buf));
if (nBytes == -1) {
fprintf(stderr, "PR_Read failed: (%d, %d)\n",
PR_GetError(), PR_GetOSError());
printf("pong process: received \"%s\"\n", buf);
if (nBytes != 5) {
fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",
if (strcmp(buf, "ping") != 0) {
fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",
strcpy(buf, "pong");
printf("pong process: sending \"%s\"\n", buf);
nBytes = PR_Write(sock, buf, 5);
if (nBytes == -1) {
fprintf(stderr, "PR_Write failed\n");
status = PR_Close(sock);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
return 0;