Skip to content

check the prefix convert ip6 back to ip4 if ip is ip4 #1871

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
gubaojian wants to merge 1 commit into
base: master
Choose a base branch
from
Open

check the prefix convert ip6 back to ip4 if ip is ip4 #1871

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 7 additions & 0 deletions src/AsyncSocket.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@

#include <cstring>
#include <iostream>
#include <string.h>

#include "libusockets.h"

Expand Down Expand Up @@ -212,6 +213,12 @@ struct AsyncSocket {
ipLength = snprintf(buf, 64, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",
b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8], b[9], b[10], b[11],
b[12], b[13], b[14], b[15]);
// ip4 127.0.0.1 be converted to ip6 0000:0000:0000:0000:0000:ffff:7f00:0001
// following code will check the prefix convert ip6 back to ip4 if ip is ip4
const char* IPV6_IPV4_MAPPED_PREFIX="0000:0000:0000:0000:0000:ffff:";
if (0 == memcmp(buf, IPV6_IPV4_MAPPED_PREFIX, strlen(IPV6_IPV4_MAPPED_PREFIX))) {
ipLength = snprintf(buf, 64, "%u.%u.%u.%u", b[12], b[13], b[14], b[15]);
}
}

return {buf, (unsigned int) ipLength};
Expand Down
Loading