c-multiaddr

multiaddr for IPFS in C.

Multiaddr provides easy networking protocols nesting, easy encapsulation of extra protocols, easy tunneling, etc.

Usage:

Maddr struct:

char string[]; // String that contains addresses such as /ip4/192.168.1.1/ uint8_t bytes; //String that contains the enecoded address int bsize[]; //int[1] that contains the real bytes size (Use it whenever using the bytes so you don't input trash!)

New Multi Address From String(new_maddr_fs)

char addrstr[] = "/ip4/192.168.1.1/" struct maddr a; a=new_maddr_fs(addrstr);

Obtaining the byte buffer(.bytes, .bsize[0]):

printf("TEST BYTES: %s\n",Var_To_Hex(a.bsize[0], a.bytes)); Var_To_Hex = Byte Buffer to Hex String

Encapsulation & Decapsulation(m_encapsulate, m_decapsulate)

Remember, Decapsulation happens from right to left, never in reverse, if you have /ip4/udp/ipfs/ if you decapsulate "udp" you will also take out ipfs! Now the string is: /ip4/192.168.1.1/ m_encapsulate(&a,"/udp/3333/"); //Adds udp/3333/ to char addrstr Now the string is: /ip4/192.168.1.1/udp/3333/ m_decapsulate(&a,"udp"); //Removes udp protocol and its address Now the string is: /ip4/192.168.1.1/ m_encapsulate(&a,"/tcp/8080"); Now the string is: /ip4/192.168.1.1/tcp/8080/

Constructing a multiaddress from bytes:

struct maddr beta; beta=new_maddr_fb(a.bytes,a.bsize[0]); //This will already construct back to the string too! printf("B STRING: %s\n",beta.string); //So after encapsulation and decapsulation atm this string would contain: /ip4/192.168.1.1/tcp/8080/