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Fixed IPv6 bug (sockaddr size too small) when binding socket to address

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This commit is contained in:
Aadhavan Srinivasan
2023-02-24 11:01:23 -06:00
committed by Rockingcool
parent 9c2c915ca7
commit 06cc3fe2d1
1 changed files with 28 additions and 4 deletions
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32
easysock.c
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@@ -51,11 +51,23 @@ void create_addr(int network, char* address, int port,struct sockaddr* dest) {
int create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct) { int create_local (int network, char transport, char* address, int port,struct sockaddr* addr_struct) {
int socket = create_socket(network,transport); int socket = create_socket(network,transport);
if (socket == -1) { if (socket < 0) {
exit(-1); printf("Something went wrong creating the socket: %s\n",strerror(errno));
} }
create_addr(network,address,port,addr_struct); create_addr(network,address,port,addr_struct);
int addrlen = sizeof(*addr_struct); int addrlen;
if (network == 4) {
addrlen = sizeof(struct sockaddr_in);
} else if (network == 6) {
addrlen = sizeof(struct sockaddr_in6);
} else {
exit(-7);
}
/* The value of addrlen should be the size of the 'sockaddr'.
This should be set to the size of 'sockaddr_in' for IPv4, and 'sockaddr_in6' for IPv6.
See https://stackoverflow.com/questions/73707162/socket-bind-failed-with-invalid-argument-error-for-program-running-on-macos */
int i = bind (socket,addr_struct,(socklen_t)addrlen); int i = bind (socket,addr_struct,(socklen_t)addrlen);
if (i < 0) { if (i < 0) {
printf("Something went wrong: %s\n",strerror(errno)); printf("Something went wrong: %s\n",strerror(errno));
@@ -73,7 +85,19 @@ int create_remote (int network,char transport,char* address,int port) {
} }
struct sockaddr remote_addr_struct; struct sockaddr remote_addr_struct;
create_addr(network,address,port,&remote_addr_struct); create_addr(network,address,port,&remote_addr_struct);
int addrlen = sizeof(remote_addr_struct); int addrlen;
if (network == 4) {
addrlen = sizeof(struct sockaddr_in);
} else if (network == 6) {
addrlen = sizeof(struct sockaddr_in6);
} else {
exit(-7);
}
/* The value of addrlen should be the size of the 'sockaddr'.
This should be set to the size of 'sockaddr_in' for IPv4, and 'sockaddr_in6' for IPv6.
See https://stackoverflow.com/questions/73707162/socket-bind-failed-with-invalid-argument-error-for-program-running-on-macos */
int i = connect(socket,&remote_addr_struct,(socklen_t)addrlen); int i = connect(socket,&remote_addr_struct,(socklen_t)addrlen);
if (i < 0) { if (i < 0) {
printf("Something went wrong: %s\n",strerror(errno)); printf("Something went wrong: %s\n",strerror(errno));