From 48cb332b64f5a3fa3e500452bc28638020c0436b Mon Sep 17 00:00:00 2001
From: German Service Network <support@gsnw.de>
Date: Sun, 23 Aug 2026 09:19:05 +0200
Subject: [PATCH] Fix getprotobyname missing on Android preventing use (by
 Paliak)

---
 CHANGELOG.md  | 1 +
 src/socket4.c | 9 ++-------
 src/socket6.c | 9 ++-------
 3 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 94c421e..f424189 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ Next
 
 ## Bugfixes and other changes
 
+- Fix getprotobyname missing on Android preventing use (#470, thanks Paliak. Merged #475)
 - ci: Removed travis-ci (#446, thanks @gsnw-sebast)
 - Performance optimization: reduce number of select calls and use
   recvmsg with MSG_DONTWAIT instead (#449)
diff --git a/src/socket4.c b/src/socket4.c
index cb986e2..f6f9614 100644
--- a/src/socket4.c
+++ b/src/socket4.c
@@ -59,20 +59,15 @@ static int outgoing_src_addr_set_ipv4 = 0;
 
 int open_ping_socket_ipv4(int *socktype)
 {
-    struct protoent* proto;
     int s;
 
-    /* confirm that ICMP is available on this machine */
-    if ((proto = getprotobyname("icmp")) == NULL)
-        crash_and_burn("icmp: unknown protocol");
-
     /* create raw socket for ICMP calls (ping) */
     *socktype = SOCK_RAW;
-    s = socket(AF_INET, *socktype, proto->p_proto);
+    s = socket(AF_INET, *socktype, IPPROTO_ICMP);
     if (s < 0) {
         /* try non-privileged icmp (works on Mac OSX without privileges, for example) */
         *socktype = SOCK_DGRAM;
-        s = socket(AF_INET, *socktype, proto->p_proto);
+        s = socket(AF_INET, *socktype, IPPROTO_ICMP);
         if (s < 0) {
             return -1;
         }
diff --git a/src/socket6.c b/src/socket6.c
index ab6e199..f2ccb7e 100644
--- a/src/socket6.c
+++ b/src/socket6.c
@@ -57,20 +57,15 @@ static int outgoing_src_addr_set_ipv6 = 0;
 
 int open_ping_socket_ipv6(int *socktype)
 {
-    struct protoent* proto;
     int s;
 
-    /* confirm that ICMP6 is available on this machine */
-    if ((proto = getprotobyname("ipv6-icmp")) == NULL)
-        crash_and_burn("ipv6-icmp: unknown protocol");
-
     /* create raw socket for ICMP6 calls (ping) */
     *socktype = SOCK_RAW;
-    s = socket(AF_INET6, *socktype, proto->p_proto);
+    s = socket(AF_INET6, *socktype, IPPROTO_ICMPV6);
     if (s < 0) {
         /* try non-privileged icmp6 (works on Mac OSX without privileges, for example) */
         *socktype = SOCK_DGRAM;
-        s = socket(AF_INET6, *socktype, proto->p_proto);
+        s = socket(AF_INET6, *socktype, IPPROTO_ICMPV6);
         if (s < 0) {
             return -1;
         }
-- 
2.43.0