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#pragma once
#include <stdint.h>
//Unless specified otherwise, functions return -1 on error or socket closure.
//If *bufsz==0 || *buf==NULL, allocates buf newly.
//Returns line length; reallocates buf if needed.
i64 tcp_read_line(int sock,char **buf,i64 *bufsz);
i64 tcp_read_data(int sock,char *buf,i64 length);
i64 tcp_send_data(int sock,const char *buf,i64 length);
i64 tcp_send_str(int sock,const char *str);
i64 tcp_send_line(int sock,const char *str);
i64 tcp_send_line_f(int sock,const char *format,...) __attribute__((format (printf,2,3)));
i64 tcp_send_list(int sock,const char *tag,const char *const *list,i64 len);
i64 tcp_send_int(int sock,const char *tag,i64 value);
i64 tcp_read_ok(int sock,const char *tag);
typedef struct TcpList{
i64 nitems;
char **items;
} TcpList;
//Returns NULL on error instead of -1.
TcpList* tcp_read_list(int sock,const char *tag);
void tcp_list_destroy(TcpList *list);
typedef enum TcpResponseType{
TCP_OK,
TCP_LIST,
TCP_INT,
TCP_ERROR,
} TcpResponseType;
typedef struct TcpResponse{
TcpResponseType type;
union {
TcpList *lval;
i64 ival;
char *eval; //Newly allocated string
};
} TcpResponse;
//Returns NULL on error instead of -1.
TcpResponse* tcp_read_response(int sock,const char *tag);
void tcp_response_destroy(TcpResponse *res);
//Returns the socket.
int tcp_connect(const char *hostname,int port);
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